diff --git a/Android.bp b/Android.bp
index 63de015..b1db8e9 100644
--- a/Android.bp
+++ b/Android.bp
@@ -130,3 +130,8 @@
     // Currently, only microdroid can refer to buildinfo.prop
     visibility: ["//packages/modules/Virtualization/microdroid"],
 }
+
+// container for apex_contributions selected using build flags
+all_apex_contributions {
+    name: "all_apex_contributions",
+}
diff --git a/aconfig/cc_aconfig_library.go b/aconfig/cc_aconfig_library.go
index 5b0fb4a..210a581 100644
--- a/aconfig/cc_aconfig_library.go
+++ b/aconfig/cc_aconfig_library.go
@@ -38,8 +38,11 @@
 	// name of the aconfig_declarations module to generate a library for
 	Aconfig_declarations string
 
-	// whether to generate test mode version of the library
-	Test *bool
+	// default mode is "production", the other accepted modes are:
+	// "test": to generate test mode version of the library
+	// "exported": to generate exported mode version of the library
+	// an error will be thrown if the mode is not supported
+	Mode *string
 }
 
 type CcAconfigLibraryCallbacks struct {
@@ -121,12 +124,11 @@
 	}
 	declarations := ctx.OtherModuleProvider(declarationsModules[0], declarationsProviderKey).(declarationsProviderData)
 
-	var mode string
-	if proptools.Bool(this.properties.Test) {
-		mode = "test"
-	} else {
-		mode = "production"
+	mode := proptools.StringDefault(this.properties.Mode, "production")
+	if !isModeSupported(mode) {
+		ctx.PropertyErrorf("mode", "%q is not a supported mode", mode)
 	}
+
 	ctx.Build(pctx, android.BuildParams{
 		Rule:  cppRule,
 		Input: declarations.IntermediatePath,
diff --git a/aconfig/cc_aconfig_library_test.go b/aconfig/cc_aconfig_library_test.go
index 6f17c75..ba27250 100644
--- a/aconfig/cc_aconfig_library_test.go
+++ b/aconfig/cc_aconfig_library_test.go
@@ -22,16 +22,17 @@
 	"android/soong/cc"
 )
 
-var codegenModeTestData = []struct {
+var ccCodegenModeTestData = []struct {
 	setting, expected string
 }{
 	{"", "production"},
-	{"test: false,", "production"},
-	{"test: true,", "test"},
+	{"mode: `production`,", "production"},
+	{"mode: `test`,", "test"},
+	{"mode: `exported`,", "exported"},
 }
 
 func TestCCCodegenMode(t *testing.T) {
-	for _, testData := range codegenModeTestData {
+	for _, testData := range ccCodegenModeTestData {
 		testCCCodegenModeHelper(t, testData.setting, testData.expected)
 	}
 }
@@ -65,3 +66,41 @@
 	rule := module.Rule("cc_aconfig_library")
 	android.AssertStringEquals(t, "rule must contain test mode", rule.Args["mode"], ruleMode)
 }
+
+var incorrectCCCodegenModeTestData = []struct {
+	setting, expectedErr string
+}{
+	{"mode: `unsupported`,", "mode: \"unsupported\" is not a supported mode"},
+}
+
+func TestIncorrectCCCodegenMode(t *testing.T) {
+	for _, testData := range incorrectCCCodegenModeTestData {
+		testIncorrectCCCodegenModeHelper(t, testData.setting, testData.expectedErr)
+	}
+}
+
+func testIncorrectCCCodegenModeHelper(t *testing.T, bpMode string, err string) {
+	t.Helper()
+	android.GroupFixturePreparers(
+		PrepareForTestWithAconfigBuildComponents,
+		cc.PrepareForTestWithCcDefaultModules).
+		ExtendWithErrorHandler(android.FixtureExpectsOneErrorPattern(err)).
+		RunTestWithBp(t, fmt.Sprintf(`
+			aconfig_declarations {
+				name: "my_aconfig_declarations",
+				package: "com.example.package",
+				srcs: ["foo.aconfig"],
+			}
+
+			cc_library {
+    		name: "server_configurable_flags",
+    		srcs: ["server_configurable_flags.cc"],
+			}
+
+			cc_aconfig_library {
+				name: "my_cc_aconfig_library",
+				aconfig_declarations: "my_aconfig_declarations",
+				%s
+			}
+		`, bpMode))
+}
diff --git a/aconfig/init.go b/aconfig/init.go
index 3d62714..626e66d 100644
--- a/aconfig/init.go
+++ b/aconfig/init.go
@@ -40,7 +40,7 @@
 			Restat: true,
 		}, "release_version", "package", "declarations", "values", "default-permission")
 
-	// For java_aconfig_library: Generate java file
+	// For java_aconfig_library: Generate java library
 	javaRule = pctx.AndroidStaticRule("java_aconfig_library",
 		blueprint.RuleParams{
 			Command: `rm -rf ${out}.tmp` +
@@ -58,7 +58,7 @@
 			Restat: true,
 		}, "mode")
 
-	// For java_aconfig_library: Generate java file
+	// For cc_aconfig_library: Generate C++ library
 	cppRule = pctx.AndroidStaticRule("cc_aconfig_library",
 		blueprint.RuleParams{
 			Command: `rm -rf ${gendir}` +
@@ -69,10 +69,10 @@
 				`    --out ${gendir}`,
 			CommandDeps: []string{
 				"$aconfig",
-				"$soong_zip",
 			},
 		}, "gendir", "mode")
 
+	// For rust_aconfig_library: Generate Rust library
 	rustRule = pctx.AndroidStaticRule("rust_aconfig_library",
 		blueprint.RuleParams{
 			Command: `rm -rf ${gendir}` +
@@ -83,11 +83,10 @@
 				`    --out ${gendir}`,
 			CommandDeps: []string{
 				"$aconfig",
-				"$soong_zip",
 			},
 		}, "gendir", "mode")
 
-	// For all_aconfig_declarations
+	// For all_aconfig_declarations: Combine all parsed_flags proto files
 	allDeclarationsRule = pctx.AndroidStaticRule("all_aconfig_declarations_dump",
 		blueprint.RuleParams{
 			Command: `${aconfig} dump --format protobuf --out ${out} ${cache_files}`,
diff --git a/aconfig/java_aconfig_library.go b/aconfig/java_aconfig_library.go
index f7f8db8..eedb3c3 100644
--- a/aconfig/java_aconfig_library.go
+++ b/aconfig/java_aconfig_library.go
@@ -30,12 +30,17 @@
 
 var declarationsTag = declarationsTagType{}
 
+var aconfigSupportedModes = []string{"production", "test", "exported"}
+
 type JavaAconfigDeclarationsLibraryProperties struct {
 	// name of the aconfig_declarations module to generate a library for
 	Aconfig_declarations string
 
-	// whether to generate test mode version of the library
-	Test *bool
+	// default mode is "production", the other accepted modes are:
+	// "test": to generate test mode version of the library
+	// "exported": to generate exported mode version of the library
+	// an error will be thrown if the mode is not supported
+	Mode *string
 }
 
 type JavaAconfigDeclarationsLibraryCallbacks struct {
@@ -72,12 +77,12 @@
 
 	// Generate the action to build the srcjar
 	srcJarPath := android.PathForModuleGen(ctx, ctx.ModuleName()+".srcjar")
-	var mode string
-	if proptools.Bool(callbacks.properties.Test) {
-		mode = "test"
-	} else {
-		mode = "production"
+
+	mode := proptools.StringDefault(callbacks.properties.Mode, "production")
+	if !isModeSupported(mode) {
+		ctx.PropertyErrorf("mode", "%q is not a supported mode", mode)
 	}
+
 	ctx.Build(pctx, android.BuildParams{
 		Rule:        javaRule,
 		Input:       declarations.IntermediatePath,
@@ -95,9 +100,12 @@
 	return srcJarPath
 }
 
+func isModeSupported(mode string) bool {
+	return android.InList(mode, aconfigSupportedModes)
+}
+
 type bazelJavaAconfigLibraryAttributes struct {
 	Aconfig_declarations bazel.LabelAttribute
-	Test                 *bool
 	Sdk_version          *string
 	Libs                 bazel.LabelListAttribute
 }
@@ -138,7 +146,6 @@
 
 	attrs := bazelJavaAconfigLibraryAttributes{
 		Aconfig_declarations: *bazel.MakeLabelAttribute(android.BazelLabelForModuleDepSingle(ctx, callbacks.properties.Aconfig_declarations).Label),
-		Test:                 callbacks.properties.Test,
 		Sdk_version:          &sdkVersion,
 		Libs:                 libs,
 	}
diff --git a/aconfig/java_aconfig_library_test.go b/aconfig/java_aconfig_library_test.go
index af50848..a803672 100644
--- a/aconfig/java_aconfig_library_test.go
+++ b/aconfig/java_aconfig_library_test.go
@@ -178,14 +178,42 @@
 	android.AssertStringEquals(t, "rule must contain test mode", rule.Args["mode"], ruleMode)
 }
 
+func testCodegenModeWithError(t *testing.T, bpMode string, err string) {
+	android.GroupFixturePreparers(
+		PrepareForTestWithAconfigBuildComponents,
+		java.PrepareForTestWithJavaDefaultModules).
+		ExtendWithErrorHandler(android.FixtureExpectsOneErrorPattern(err)).
+		RunTestWithBp(t, fmt.Sprintf(`
+			aconfig_declarations {
+				name: "my_aconfig_declarations",
+				package: "com.example.package",
+				srcs: ["foo.aconfig"],
+			}
+
+			java_aconfig_library {
+				name: "my_java_aconfig_library",
+				aconfig_declarations: "my_aconfig_declarations",
+				%s
+			}
+		`, bpMode))
+}
+
 func TestDefaultProdMode(t *testing.T) {
 	testCodegenMode(t, "", "production")
 }
 
 func TestProdMode(t *testing.T) {
-	testCodegenMode(t, "test: false,", "production")
+	testCodegenMode(t, "mode: `production`,", "production")
 }
 
 func TestTestMode(t *testing.T) {
-	testCodegenMode(t, "test: true,", "test")
+	testCodegenMode(t, "mode: `test`,", "test")
+}
+
+func TestExportedMode(t *testing.T) {
+	testCodegenMode(t, "mode: `exported`,", "exported")
+}
+
+func TestUnsupportedMode(t *testing.T) {
+	testCodegenModeWithError(t, "mode: `unsupported`,", "mode: \"unsupported\" is not a supported mode")
 }
diff --git a/aconfig/rust_aconfig_library.go b/aconfig/rust_aconfig_library.go
index de41776..265685e 100644
--- a/aconfig/rust_aconfig_library.go
+++ b/aconfig/rust_aconfig_library.go
@@ -1,9 +1,10 @@
 package aconfig
 
 import (
+	"fmt"
+
 	"android/soong/android"
 	"android/soong/rust"
-	"fmt"
 
 	"github.com/google/blueprint"
 	"github.com/google/blueprint/proptools"
@@ -18,7 +19,12 @@
 type RustAconfigLibraryProperties struct {
 	// name of the aconfig_declarations module to generate a library for
 	Aconfig_declarations string
-	Test                 *bool
+
+	// default mode is "production", the other accepted modes are:
+	// "test": to generate test mode version of the library
+	// "exported": to generate exported mode version of the library
+	// an error will be thrown if the mode is not supported
+	Mode *string
 }
 
 type aconfigDecorator struct {
@@ -60,9 +66,9 @@
 	}
 	declarations := ctx.OtherModuleProvider(declarationsModules[0], declarationsProviderKey).(declarationsProviderData)
 
-	mode := "production"
-	if proptools.Bool(a.Properties.Test) {
-		mode = "test"
+	mode := proptools.StringDefault(a.Properties.Mode, "production")
+	if !isModeSupported(mode) {
+		ctx.PropertyErrorf("mode", "%q is not a supported mode", mode)
 	}
 
 	ctx.Build(pctx, android.BuildParams{
@@ -84,6 +90,7 @@
 func (a *aconfigDecorator) SourceProviderDeps(ctx rust.DepsContext, deps rust.Deps) rust.Deps {
 	deps = a.BaseSourceProvider.SourceProviderDeps(ctx, deps)
 	deps.Rustlibs = append(deps.Rustlibs, "libflags_rust")
+	deps.Rustlibs = append(deps.Rustlibs, "liblazy_static")
 	ctx.AddDependency(ctx.Module(), rustDeclarationsTag, a.Properties.Aconfig_declarations)
 	return deps
 }
diff --git a/aconfig/rust_aconfig_library_test.go b/aconfig/rust_aconfig_library_test.go
index 17385c3..3aeab76 100644
--- a/aconfig/rust_aconfig_library_test.go
+++ b/aconfig/rust_aconfig_library_test.go
@@ -1,10 +1,11 @@
 package aconfig
 
 import (
-	"android/soong/android"
-	"android/soong/rust"
 	"fmt"
 	"testing"
+
+	"android/soong/android"
+	"android/soong/rust"
 )
 
 func TestRustAconfigLibrary(t *testing.T) {
@@ -22,6 +23,11 @@
 				crate_name: "flags_rust",
 				srcs: ["lib.rs"],
 			}
+			rust_library {
+				name: "liblazy_static", // test mock
+				crate_name: "lazy_static",
+				srcs: ["src/lib.rs"],
+			}
 			aconfig_declarations {
 				name: "my_aconfig_declarations",
 				package: "com.example.package",
@@ -58,3 +64,96 @@
 		)
 	}
 }
+
+var rustCodegenModeTestData = []struct {
+	setting, expected string
+}{
+	{"", "production"},
+	{"mode: `production`,", "production"},
+	{"mode: `test`,", "test"},
+	{"mode: `exported`,", "exported"},
+}
+
+func TestRustCodegenMode(t *testing.T) {
+	for _, testData := range rustCodegenModeTestData {
+		testRustCodegenModeHelper(t, testData.setting, testData.expected)
+	}
+}
+
+func testRustCodegenModeHelper(t *testing.T, bpMode string, ruleMode string) {
+	t.Helper()
+	result := android.GroupFixturePreparers(
+		PrepareForTestWithAconfigBuildComponents,
+		rust.PrepareForTestWithRustIncludeVndk).
+		ExtendWithErrorHandler(android.FixtureExpectsNoErrors).
+		RunTestWithBp(t, fmt.Sprintf(`
+			rust_library {
+				name: "libflags_rust", // test mock
+				crate_name: "flags_rust",
+				srcs: ["lib.rs"],
+			}
+			rust_library {
+				name: "liblazy_static", // test mock
+				crate_name: "lazy_static",
+				srcs: ["src/lib.rs"],
+			}
+			aconfig_declarations {
+				name: "my_aconfig_declarations",
+				package: "com.example.package",
+				srcs: ["foo.aconfig"],
+			}
+			rust_aconfig_library {
+				name: "libmy_rust_aconfig_library",
+				crate_name: "my_rust_aconfig_library",
+				aconfig_declarations: "my_aconfig_declarations",
+				%s
+			}
+		`, bpMode))
+
+	module := result.ModuleForTests("libmy_rust_aconfig_library", "android_arm64_armv8-a_source")
+	rule := module.Rule("rust_aconfig_library")
+	android.AssertStringEquals(t, "rule must contain test mode", rule.Args["mode"], ruleMode)
+}
+
+var incorrectRustCodegenModeTestData = []struct {
+	setting, expectedErr string
+}{
+	{"mode: `unsupported`,", "mode: \"unsupported\" is not a supported mode"},
+}
+
+func TestIncorrectRustCodegenMode(t *testing.T) {
+	for _, testData := range incorrectRustCodegenModeTestData {
+		testIncorrectRustCodegenModeHelper(t, testData.setting, testData.expectedErr)
+	}
+}
+
+func testIncorrectRustCodegenModeHelper(t *testing.T, bpMode string, err string) {
+	t.Helper()
+	android.GroupFixturePreparers(
+		PrepareForTestWithAconfigBuildComponents,
+		rust.PrepareForTestWithRustIncludeVndk).
+		ExtendWithErrorHandler(android.FixtureExpectsOneErrorPattern(err)).
+		RunTestWithBp(t, fmt.Sprintf(`
+			rust_library {
+				name: "libflags_rust", // test mock
+				crate_name: "flags_rust",
+				srcs: ["lib.rs"],
+			}
+			rust_library {
+				name: "liblazy_static", // test mock
+				crate_name: "lazy_static",
+				srcs: ["src/lib.rs"],
+			}
+			aconfig_declarations {
+				name: "my_aconfig_declarations",
+				package: "com.example.package",
+				srcs: ["foo.aconfig"],
+			}
+			rust_aconfig_library {
+				name: "libmy_rust_aconfig_library",
+				crate_name: "my_rust_aconfig_library",
+				aconfig_declarations: "my_aconfig_declarations",
+				%s
+			}
+		`, bpMode))
+}
diff --git a/android/Android.bp b/android/Android.bp
index 7fbba43..62f534c 100644
--- a/android/Android.bp
+++ b/android/Android.bp
@@ -37,6 +37,7 @@
         "api_levels.go",
         "arch.go",
         "arch_list.go",
+        "base_module_context.go",
         "bazel.go",
         "bazel_handler.go",
         "bazel_paths.go",
@@ -51,6 +52,7 @@
         "defs.go",
         "depset_generic.go",
         "deptag.go",
+        "early_module_context.go",
         "expand.go",
         "filegroup.go",
         "fixture.go",
@@ -65,6 +67,7 @@
         "makevars.go",
         "metrics.go",
         "module.go",
+        "module_context.go",
         "mutator.go",
         "namespace.go",
         "neverallow.go",
diff --git a/android/apex_contributions.go b/android/apex_contributions.go
index a28ac31..9b188de 100644
--- a/android/apex_contributions.go
+++ b/android/apex_contributions.go
@@ -15,6 +15,7 @@
 package android
 
 import (
+	"github.com/google/blueprint"
 	"github.com/google/blueprint/proptools"
 )
 
@@ -24,6 +25,7 @@
 
 func RegisterApexContributionsBuildComponents(ctx RegistrationContext) {
 	ctx.RegisterModuleType("apex_contributions", apexContributionsFactory)
+	ctx.RegisterSingletonModuleType("all_apex_contributions", allApexContributionsFactory)
 }
 
 type apexContributions struct {
@@ -65,3 +67,109 @@
 // prebuilts selection.
 func (m *apexContributions) GenerateAndroidBuildActions(ctx ModuleContext) {
 }
+
+// A container for apex_contributions.
+// Based on product_config, it will create a dependency on the selected
+// apex_contributions per mainline module
+type allApexContributions struct {
+	SingletonModuleBase
+}
+
+func allApexContributionsFactory() SingletonModule {
+	module := &allApexContributions{}
+	InitAndroidModule(module)
+	return module
+}
+
+type apexContributionsDepTag struct {
+	blueprint.BaseDependencyTag
+}
+
+var (
+	acDepTag = apexContributionsDepTag{}
+)
+
+// Creates a dep to each selected apex_contributions
+func (a *allApexContributions) DepsMutator(ctx BottomUpMutatorContext) {
+	ctx.AddDependency(ctx.Module(), acDepTag, ctx.Config().AllApexContributions()...)
+}
+
+// Set PrebuiltSelectionInfoProvider in post deps phase
+func (a *allApexContributions) SetPrebuiltSelectionInfoProvider(ctx BaseModuleContext) {
+	addContentsToProvider := func(p *PrebuiltSelectionInfoMap, m *apexContributions) {
+		for _, content := range m.Contents() {
+			if !ctx.OtherModuleExists(content) && !ctx.Config().AllowMissingDependencies() {
+				ctx.ModuleErrorf("%s listed in apex_contributions %s does not exist\n", content, m.Name())
+			}
+			pi := &PrebuiltSelectionInfo{
+				baseModuleName:     RemoveOptionalPrebuiltPrefix(content),
+				selectedModuleName: content,
+				metadataModuleName: m.Name(),
+				apiDomain:          m.ApiDomain(),
+			}
+			p.Add(ctx, pi)
+		}
+	}
+
+	if ctx.Config().Bp2buildMode() { // Skip bp2build
+		return
+	}
+	p := PrebuiltSelectionInfoMap{}
+	ctx.VisitDirectDepsWithTag(acDepTag, func(child Module) {
+		if m, ok := child.(*apexContributions); ok {
+			addContentsToProvider(&p, m)
+		} else {
+			ctx.ModuleErrorf("%s is not an apex_contributions module\n", child.Name())
+		}
+	})
+	ctx.SetProvider(PrebuiltSelectionInfoProvider, p)
+}
+
+// A provider containing metadata about whether source or prebuilt should be used
+// This provider will be used in prebuilt_select mutator to redirect deps
+var PrebuiltSelectionInfoProvider = blueprint.NewMutatorProvider(PrebuiltSelectionInfoMap{}, "prebuilt_select")
+
+// Map of baseModuleName to the selected source or prebuilt
+type PrebuiltSelectionInfoMap map[string]PrebuiltSelectionInfo
+
+// Add a new entry to the map with some validations
+func (pm *PrebuiltSelectionInfoMap) Add(ctx BaseModuleContext, p *PrebuiltSelectionInfo) {
+	if p == nil {
+		return
+	}
+	// Do not allow dups. If the base module (without the prebuilt_) has been added before, raise an exception.
+	if old, exists := (*pm)[p.baseModuleName]; exists {
+		ctx.ModuleErrorf("Cannot use Soong module: %s from apex_contributions: %s because it has been added previously as: %s from apex_contributions: %s\n",
+			p.selectedModuleName, p.metadataModuleName, old.selectedModuleName, old.metadataModuleName,
+		)
+	}
+	(*pm)[p.baseModuleName] = *p
+}
+
+type PrebuiltSelectionInfo struct {
+	// e.g. libc
+	baseModuleName string
+	// e.g. (libc|prebuilt_libc)
+	selectedModuleName string
+	// Name of the apex_contributions module
+	metadataModuleName string
+	// e.g. com.android.runtime
+	apiDomain string
+}
+
+// Returns true if `name` is explicitly requested using one of the selected
+// apex_contributions metadata modules.
+func (p *PrebuiltSelectionInfoMap) IsSelected(baseModuleName, name string) bool {
+	if i, exists := (*p)[baseModuleName]; exists {
+		return i.selectedModuleName == name
+	} else {
+		return false
+	}
+}
+
+// This module type does not have any build actions.
+func (a *allApexContributions) GenerateAndroidBuildActions(ctx ModuleContext) {
+}
+
+func (a *allApexContributions) GenerateSingletonBuildActions(ctx SingletonContext) {
+}
diff --git a/android/base_module_context.go b/android/base_module_context.go
new file mode 100644
index 0000000..ec9c888
--- /dev/null
+++ b/android/base_module_context.go
@@ -0,0 +1,656 @@
+// Copyright 2015 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package android
+
+import (
+	"fmt"
+	"github.com/google/blueprint"
+	"regexp"
+	"strings"
+)
+
+// BaseModuleContext is the same as blueprint.BaseModuleContext except that Config() returns
+// a Config instead of an interface{}, and some methods have been wrapped to use an android.Module
+// instead of a blueprint.Module, plus some extra methods that return Android-specific information
+// about the current module.
+type BaseModuleContext interface {
+	EarlyModuleContext
+
+	blueprintBaseModuleContext() blueprint.BaseModuleContext
+
+	// OtherModuleName returns the name of another Module.  See BaseModuleContext.ModuleName for more information.
+	// It is intended for use inside the visit functions of Visit* and WalkDeps.
+	OtherModuleName(m blueprint.Module) string
+
+	// OtherModuleDir returns the directory of another Module.  See BaseModuleContext.ModuleDir for more information.
+	// It is intended for use inside the visit functions of Visit* and WalkDeps.
+	OtherModuleDir(m blueprint.Module) string
+
+	// OtherModuleErrorf reports an error on another Module.  See BaseModuleContext.ModuleErrorf for more information.
+	// It is intended for use inside the visit functions of Visit* and WalkDeps.
+	OtherModuleErrorf(m blueprint.Module, fmt string, args ...interface{})
+
+	// OtherModuleDependencyTag returns the dependency tag used to depend on a module, or nil if there is no dependency
+	// on the module.  When called inside a Visit* method with current module being visited, and there are multiple
+	// dependencies on the module being visited, it returns the dependency tag used for the current dependency.
+	OtherModuleDependencyTag(m blueprint.Module) blueprint.DependencyTag
+
+	// OtherModuleExists returns true if a module with the specified name exists, as determined by the NameInterface
+	// passed to Context.SetNameInterface, or SimpleNameInterface if it was not called.
+	OtherModuleExists(name string) bool
+
+	// OtherModuleDependencyVariantExists returns true if a module with the
+	// specified name and variant exists. The variant must match the given
+	// variations. It must also match all the non-local variations of the current
+	// module. In other words, it checks for the module that AddVariationDependencies
+	// would add a dependency on with the same arguments.
+	OtherModuleDependencyVariantExists(variations []blueprint.Variation, name string) bool
+
+	// OtherModuleFarDependencyVariantExists returns true if a module with the
+	// specified name and variant exists. The variant must match the given
+	// variations, but not the non-local variations of the current module. In
+	// other words, it checks for the module that AddFarVariationDependencies
+	// would add a dependency on with the same arguments.
+	OtherModuleFarDependencyVariantExists(variations []blueprint.Variation, name string) bool
+
+	// OtherModuleReverseDependencyVariantExists returns true if a module with the
+	// specified name exists with the same variations as the current module. In
+	// other words, it checks for the module that AddReverseDependency would add a
+	// dependency on with the same argument.
+	OtherModuleReverseDependencyVariantExists(name string) bool
+
+	// OtherModuleType returns the type of another Module.  See BaseModuleContext.ModuleType for more information.
+	// It is intended for use inside the visit functions of Visit* and WalkDeps.
+	OtherModuleType(m blueprint.Module) string
+
+	// OtherModuleProvider returns the value for a provider for the given module.  If the value is
+	// not set it returns the zero value of the type of the provider, so the return value can always
+	// be type asserted to the type of the provider.  The value returned may be a deep copy of the
+	// value originally passed to SetProvider.
+	OtherModuleProvider(m blueprint.Module, provider blueprint.ProviderKey) interface{}
+
+	// OtherModuleHasProvider returns true if the provider for the given module has been set.
+	OtherModuleHasProvider(m blueprint.Module, provider blueprint.ProviderKey) bool
+
+	// Provider returns the value for a provider for the current module.  If the value is
+	// not set it returns the zero value of the type of the provider, so the return value can always
+	// be type asserted to the type of the provider.  It panics if called before the appropriate
+	// mutator or GenerateBuildActions pass for the provider.  The value returned may be a deep
+	// copy of the value originally passed to SetProvider.
+	Provider(provider blueprint.ProviderKey) interface{}
+
+	// HasProvider returns true if the provider for the current module has been set.
+	HasProvider(provider blueprint.ProviderKey) bool
+
+	// SetProvider sets the value for a provider for the current module.  It panics if not called
+	// during the appropriate mutator or GenerateBuildActions pass for the provider, if the value
+	// is not of the appropriate type, or if the value has already been set.  The value should not
+	// be modified after being passed to SetProvider.
+	SetProvider(provider blueprint.ProviderKey, value interface{})
+
+	GetDirectDepsWithTag(tag blueprint.DependencyTag) []Module
+
+	// GetDirectDepWithTag returns the Module the direct dependency with the specified name, or nil if
+	// none exists.  It panics if the dependency does not have the specified tag.  It skips any
+	// dependencies that are not an android.Module.
+	GetDirectDepWithTag(name string, tag blueprint.DependencyTag) blueprint.Module
+
+	// GetDirectDep returns the Module and DependencyTag for the  direct dependency with the specified
+	// name, or nil if none exists.  If there are multiple dependencies on the same module it returns
+	// the first DependencyTag.
+	GetDirectDep(name string) (blueprint.Module, blueprint.DependencyTag)
+
+	ModuleFromName(name string) (blueprint.Module, bool)
+
+	// VisitDirectDepsBlueprint calls visit for each direct dependency.  If there are multiple
+	// direct dependencies on the same module visit will be called multiple times on that module
+	// and OtherModuleDependencyTag will return a different tag for each.
+	//
+	// The Module passed to the visit function should not be retained outside of the visit
+	// function, it may be invalidated by future mutators.
+	VisitDirectDepsBlueprint(visit func(blueprint.Module))
+
+	// VisitDirectDeps calls visit for each direct dependency.  If there are multiple
+	// direct dependencies on the same module visit will be called multiple times on that module
+	// and OtherModuleDependencyTag will return a different tag for each.  It raises an error if any of the
+	// dependencies are not an android.Module.
+	//
+	// The Module passed to the visit function should not be retained outside of the visit
+	// function, it may be invalidated by future mutators.
+	VisitDirectDeps(visit func(Module))
+
+	VisitDirectDepsWithTag(tag blueprint.DependencyTag, visit func(Module))
+
+	// VisitDirectDepsIf calls pred for each direct dependency, and if pred returns true calls visit.  If there are
+	// multiple direct dependencies on the same module pred and visit will be called multiple times on that module and
+	// OtherModuleDependencyTag will return a different tag for each.  It skips any
+	// dependencies that are not an android.Module.
+	//
+	// The Module passed to the visit function should not be retained outside of the visit function, it may be
+	// invalidated by future mutators.
+	VisitDirectDepsIf(pred func(Module) bool, visit func(Module))
+	// Deprecated: use WalkDeps instead to support multiple dependency tags on the same module
+	VisitDepsDepthFirst(visit func(Module))
+	// Deprecated: use WalkDeps instead to support multiple dependency tags on the same module
+	VisitDepsDepthFirstIf(pred func(Module) bool, visit func(Module))
+
+	// WalkDeps calls visit for each transitive dependency, traversing the dependency tree in top down order.  visit may
+	// be called multiple times for the same (child, parent) pair if there are multiple direct dependencies between the
+	// child and parent with different tags.  OtherModuleDependencyTag will return the tag for the currently visited
+	// (child, parent) pair.  If visit returns false WalkDeps will not continue recursing down to child.  It skips
+	// any dependencies that are not an android.Module.
+	//
+	// The Modules passed to the visit function should not be retained outside of the visit function, they may be
+	// invalidated by future mutators.
+	WalkDeps(visit func(child, parent Module) bool)
+
+	// WalkDepsBlueprint calls visit for each transitive dependency, traversing the dependency
+	// tree in top down order.  visit may be called multiple times for the same (child, parent)
+	// pair if there are multiple direct dependencies between the child and parent with different
+	// tags.  OtherModuleDependencyTag will return the tag for the currently visited
+	// (child, parent) pair.  If visit returns false WalkDeps will not continue recursing down
+	// to child.
+	//
+	// The Modules passed to the visit function should not be retained outside of the visit function, they may be
+	// invalidated by future mutators.
+	WalkDepsBlueprint(visit func(blueprint.Module, blueprint.Module) bool)
+
+	// GetWalkPath is supposed to be called in visit function passed in WalkDeps()
+	// and returns a top-down dependency path from a start module to current child module.
+	GetWalkPath() []Module
+
+	// PrimaryModule returns the first variant of the current module.  Variants of a module are always visited in
+	// order by mutators and GenerateBuildActions, so the data created by the current mutator can be read from the
+	// Module returned by PrimaryModule without data races.  This can be used to perform singleton actions that are
+	// only done once for all variants of a module.
+	PrimaryModule() Module
+
+	// FinalModule returns the last variant of the current module.  Variants of a module are always visited in
+	// order by mutators and GenerateBuildActions, so the data created by the current mutator can be read from all
+	// variants using VisitAllModuleVariants if the current module == FinalModule().  This can be used to perform
+	// singleton actions that are only done once for all variants of a module.
+	FinalModule() Module
+
+	// VisitAllModuleVariants calls visit for each variant of the current module.  Variants of a module are always
+	// visited in order by mutators and GenerateBuildActions, so the data created by the current mutator can be read
+	// from all variants if the current module == FinalModule().  Otherwise, care must be taken to not access any
+	// data modified by the current mutator.
+	VisitAllModuleVariants(visit func(Module))
+
+	// GetTagPath is supposed to be called in visit function passed in WalkDeps()
+	// and returns a top-down dependency tags path from a start module to current child module.
+	// It has one less entry than GetWalkPath() as it contains the dependency tags that
+	// exist between each adjacent pair of modules in the GetWalkPath().
+	// GetTagPath()[i] is the tag between GetWalkPath()[i] and GetWalkPath()[i+1]
+	GetTagPath() []blueprint.DependencyTag
+
+	// GetPathString is supposed to be called in visit function passed in WalkDeps()
+	// and returns a multi-line string showing the modules and dependency tags
+	// among them along the top-down dependency path from a start module to current child module.
+	// skipFirst when set to true, the output doesn't include the start module,
+	// which is already printed when this function is used along with ModuleErrorf().
+	GetPathString(skipFirst bool) string
+
+	AddMissingDependencies(missingDeps []string)
+
+	// getMissingDependencies returns the list of missing dependencies.
+	// Calling this function prevents adding new dependencies.
+	getMissingDependencies() []string
+
+	// AddUnconvertedBp2buildDep stores module name of a direct dependency that was not converted via bp2build
+	AddUnconvertedBp2buildDep(dep string)
+
+	// AddMissingBp2buildDep stores the module name of a direct dependency that was not found.
+	AddMissingBp2buildDep(dep string)
+
+	Target() Target
+	TargetPrimary() bool
+
+	// The additional arch specific targets (e.g. 32/64 bit) that this module variant is
+	// responsible for creating.
+	MultiTargets() []Target
+	Arch() Arch
+	Os() OsType
+	Host() bool
+	Device() bool
+	Darwin() bool
+	Windows() bool
+	PrimaryArch() bool
+}
+
+type baseModuleContext struct {
+	bp blueprint.BaseModuleContext
+	earlyModuleContext
+	os            OsType
+	target        Target
+	multiTargets  []Target
+	targetPrimary bool
+
+	walkPath []Module
+	tagPath  []blueprint.DependencyTag
+
+	strictVisitDeps bool // If true, enforce that all dependencies are enabled
+
+	bazelConversionMode bool
+}
+
+func (b *baseModuleContext) isBazelConversionMode() bool {
+	return b.bazelConversionMode
+}
+func (b *baseModuleContext) OtherModuleName(m blueprint.Module) string {
+	return b.bp.OtherModuleName(m)
+}
+func (b *baseModuleContext) OtherModuleDir(m blueprint.Module) string { return b.bp.OtherModuleDir(m) }
+func (b *baseModuleContext) OtherModuleErrorf(m blueprint.Module, fmt string, args ...interface{}) {
+	b.bp.OtherModuleErrorf(m, fmt, args...)
+}
+func (b *baseModuleContext) OtherModuleDependencyTag(m blueprint.Module) blueprint.DependencyTag {
+	return b.bp.OtherModuleDependencyTag(m)
+}
+func (b *baseModuleContext) OtherModuleExists(name string) bool { return b.bp.OtherModuleExists(name) }
+func (b *baseModuleContext) OtherModuleDependencyVariantExists(variations []blueprint.Variation, name string) bool {
+	return b.bp.OtherModuleDependencyVariantExists(variations, name)
+}
+func (b *baseModuleContext) OtherModuleFarDependencyVariantExists(variations []blueprint.Variation, name string) bool {
+	return b.bp.OtherModuleFarDependencyVariantExists(variations, name)
+}
+func (b *baseModuleContext) OtherModuleReverseDependencyVariantExists(name string) bool {
+	return b.bp.OtherModuleReverseDependencyVariantExists(name)
+}
+func (b *baseModuleContext) OtherModuleType(m blueprint.Module) string {
+	return b.bp.OtherModuleType(m)
+}
+func (b *baseModuleContext) OtherModuleProvider(m blueprint.Module, provider blueprint.ProviderKey) interface{} {
+	return b.bp.OtherModuleProvider(m, provider)
+}
+func (b *baseModuleContext) OtherModuleHasProvider(m blueprint.Module, provider blueprint.ProviderKey) bool {
+	return b.bp.OtherModuleHasProvider(m, provider)
+}
+func (b *baseModuleContext) Provider(provider blueprint.ProviderKey) interface{} {
+	return b.bp.Provider(provider)
+}
+func (b *baseModuleContext) HasProvider(provider blueprint.ProviderKey) bool {
+	return b.bp.HasProvider(provider)
+}
+func (b *baseModuleContext) SetProvider(provider blueprint.ProviderKey, value interface{}) {
+	b.bp.SetProvider(provider, value)
+}
+
+func (b *baseModuleContext) GetDirectDepWithTag(name string, tag blueprint.DependencyTag) blueprint.Module {
+	return b.bp.GetDirectDepWithTag(name, tag)
+}
+
+func (b *baseModuleContext) blueprintBaseModuleContext() blueprint.BaseModuleContext {
+	return b.bp
+}
+
+// AddUnconvertedBp2buildDep stores module name of a dependency that was not converted to Bazel.
+func (b *baseModuleContext) AddUnconvertedBp2buildDep(dep string) {
+	unconvertedDeps := &b.Module().base().commonProperties.BazelConversionStatus.UnconvertedDeps
+	*unconvertedDeps = append(*unconvertedDeps, dep)
+}
+
+// AddMissingBp2buildDep stores module name of a dependency that was not found in a Android.bp file.
+func (b *baseModuleContext) AddMissingBp2buildDep(dep string) {
+	missingDeps := &b.Module().base().commonProperties.BazelConversionStatus.MissingDeps
+	*missingDeps = append(*missingDeps, dep)
+}
+
+func (b *baseModuleContext) AddMissingDependencies(deps []string) {
+	if deps != nil {
+		missingDeps := &b.Module().base().commonProperties.MissingDeps
+		*missingDeps = append(*missingDeps, deps...)
+		*missingDeps = FirstUniqueStrings(*missingDeps)
+	}
+}
+
+func (b *baseModuleContext) checkedMissingDeps() bool {
+	return b.Module().base().commonProperties.CheckedMissingDeps
+}
+
+func (b *baseModuleContext) getMissingDependencies() []string {
+	checked := &b.Module().base().commonProperties.CheckedMissingDeps
+	*checked = true
+	var missingDeps []string
+	missingDeps = append(missingDeps, b.Module().base().commonProperties.MissingDeps...)
+	missingDeps = append(missingDeps, b.bp.EarlyGetMissingDependencies()...)
+	missingDeps = FirstUniqueStrings(missingDeps)
+	return missingDeps
+}
+
+type AllowDisabledModuleDependency interface {
+	blueprint.DependencyTag
+	AllowDisabledModuleDependency(target Module) bool
+}
+
+func (b *baseModuleContext) validateAndroidModule(module blueprint.Module, tag blueprint.DependencyTag, strict bool) Module {
+	aModule, _ := module.(Module)
+
+	if !strict {
+		return aModule
+	}
+
+	if aModule == nil {
+		b.ModuleErrorf("module %q (%#v) not an android module", b.OtherModuleName(module), tag)
+		return nil
+	}
+
+	if !aModule.Enabled() {
+		if t, ok := tag.(AllowDisabledModuleDependency); !ok || !t.AllowDisabledModuleDependency(aModule) {
+			if b.Config().AllowMissingDependencies() {
+				b.AddMissingDependencies([]string{b.OtherModuleName(aModule)})
+			} else {
+				b.ModuleErrorf("depends on disabled module %q", b.OtherModuleName(aModule))
+			}
+		}
+		return nil
+	}
+	return aModule
+}
+
+type dep struct {
+	mod blueprint.Module
+	tag blueprint.DependencyTag
+}
+
+func (b *baseModuleContext) getDirectDepsInternal(name string, tag blueprint.DependencyTag) []dep {
+	var deps []dep
+	b.VisitDirectDepsBlueprint(func(module blueprint.Module) {
+		if aModule, _ := module.(Module); aModule != nil {
+			if aModule.base().BaseModuleName() == name {
+				returnedTag := b.bp.OtherModuleDependencyTag(aModule)
+				if tag == nil || returnedTag == tag {
+					deps = append(deps, dep{aModule, returnedTag})
+				}
+			}
+		} else if b.bp.OtherModuleName(module) == name {
+			returnedTag := b.bp.OtherModuleDependencyTag(module)
+			if tag == nil || returnedTag == tag {
+				deps = append(deps, dep{module, returnedTag})
+			}
+		}
+	})
+	return deps
+}
+
+func (b *baseModuleContext) getDirectDepInternal(name string, tag blueprint.DependencyTag) (blueprint.Module, blueprint.DependencyTag) {
+	deps := b.getDirectDepsInternal(name, tag)
+	if len(deps) == 1 {
+		return deps[0].mod, deps[0].tag
+	} else if len(deps) >= 2 {
+		panic(fmt.Errorf("Multiple dependencies having same BaseModuleName() %q found from %q",
+			name, b.ModuleName()))
+	} else {
+		return nil, nil
+	}
+}
+
+func (b *baseModuleContext) getDirectDepFirstTag(name string) (blueprint.Module, blueprint.DependencyTag) {
+	foundDeps := b.getDirectDepsInternal(name, nil)
+	deps := map[blueprint.Module]bool{}
+	for _, dep := range foundDeps {
+		deps[dep.mod] = true
+	}
+	if len(deps) == 1 {
+		return foundDeps[0].mod, foundDeps[0].tag
+	} else if len(deps) >= 2 {
+		// this could happen if two dependencies have the same name in different namespaces
+		// TODO(b/186554727): this should not occur if namespaces are handled within
+		// getDirectDepsInternal.
+		panic(fmt.Errorf("Multiple dependencies having same BaseModuleName() %q found from %q",
+			name, b.ModuleName()))
+	} else {
+		return nil, nil
+	}
+}
+
+func (b *baseModuleContext) GetDirectDepsWithTag(tag blueprint.DependencyTag) []Module {
+	var deps []Module
+	b.VisitDirectDepsBlueprint(func(module blueprint.Module) {
+		if aModule, _ := module.(Module); aModule != nil {
+			if b.bp.OtherModuleDependencyTag(aModule) == tag {
+				deps = append(deps, aModule)
+			}
+		}
+	})
+	return deps
+}
+
+// GetDirectDep returns the Module and DependencyTag for the direct dependency with the specified
+// name, or nil if none exists. If there are multiple dependencies on the same module it returns the
+// first DependencyTag.
+func (b *baseModuleContext) GetDirectDep(name string) (blueprint.Module, blueprint.DependencyTag) {
+	return b.getDirectDepFirstTag(name)
+}
+
+func (b *baseModuleContext) ModuleFromName(name string) (blueprint.Module, bool) {
+	if !b.isBazelConversionMode() {
+		panic("cannot call ModuleFromName if not in bazel conversion mode")
+	}
+	var m blueprint.Module
+	var ok bool
+	if moduleName, _ := SrcIsModuleWithTag(name); moduleName != "" {
+		m, ok = b.bp.ModuleFromName(moduleName)
+	} else {
+		m, ok = b.bp.ModuleFromName(name)
+	}
+	if !ok {
+		return m, ok
+	}
+	// If this module is not preferred, tried to get the prebuilt version instead
+	if a, aOk := m.(Module); aOk && !IsModulePrebuilt(a) && !IsModulePreferred(a) {
+		return b.ModuleFromName("prebuilt_" + name)
+	}
+	return m, ok
+}
+
+func (b *baseModuleContext) VisitDirectDepsBlueprint(visit func(blueprint.Module)) {
+	b.bp.VisitDirectDeps(visit)
+}
+
+func (b *baseModuleContext) VisitDirectDeps(visit func(Module)) {
+	b.bp.VisitDirectDeps(func(module blueprint.Module) {
+		if aModule := b.validateAndroidModule(module, b.bp.OtherModuleDependencyTag(module), b.strictVisitDeps); aModule != nil {
+			visit(aModule)
+		}
+	})
+}
+
+func (b *baseModuleContext) VisitDirectDepsWithTag(tag blueprint.DependencyTag, visit func(Module)) {
+	b.bp.VisitDirectDeps(func(module blueprint.Module) {
+		if b.bp.OtherModuleDependencyTag(module) == tag {
+			if aModule := b.validateAndroidModule(module, b.bp.OtherModuleDependencyTag(module), b.strictVisitDeps); aModule != nil {
+				visit(aModule)
+			}
+		}
+	})
+}
+
+func (b *baseModuleContext) VisitDirectDepsIf(pred func(Module) bool, visit func(Module)) {
+	b.bp.VisitDirectDepsIf(
+		// pred
+		func(module blueprint.Module) bool {
+			if aModule := b.validateAndroidModule(module, b.bp.OtherModuleDependencyTag(module), b.strictVisitDeps); aModule != nil {
+				return pred(aModule)
+			} else {
+				return false
+			}
+		},
+		// visit
+		func(module blueprint.Module) {
+			visit(module.(Module))
+		})
+}
+
+func (b *baseModuleContext) VisitDepsDepthFirst(visit func(Module)) {
+	b.bp.VisitDepsDepthFirst(func(module blueprint.Module) {
+		if aModule := b.validateAndroidModule(module, b.bp.OtherModuleDependencyTag(module), b.strictVisitDeps); aModule != nil {
+			visit(aModule)
+		}
+	})
+}
+
+func (b *baseModuleContext) VisitDepsDepthFirstIf(pred func(Module) bool, visit func(Module)) {
+	b.bp.VisitDepsDepthFirstIf(
+		// pred
+		func(module blueprint.Module) bool {
+			if aModule := b.validateAndroidModule(module, b.bp.OtherModuleDependencyTag(module), b.strictVisitDeps); aModule != nil {
+				return pred(aModule)
+			} else {
+				return false
+			}
+		},
+		// visit
+		func(module blueprint.Module) {
+			visit(module.(Module))
+		})
+}
+
+func (b *baseModuleContext) WalkDepsBlueprint(visit func(blueprint.Module, blueprint.Module) bool) {
+	b.bp.WalkDeps(visit)
+}
+
+func (b *baseModuleContext) WalkDeps(visit func(Module, Module) bool) {
+	b.walkPath = []Module{b.Module()}
+	b.tagPath = []blueprint.DependencyTag{}
+	b.bp.WalkDeps(func(child, parent blueprint.Module) bool {
+		childAndroidModule, _ := child.(Module)
+		parentAndroidModule, _ := parent.(Module)
+		if childAndroidModule != nil && parentAndroidModule != nil {
+			// record walkPath before visit
+			for b.walkPath[len(b.walkPath)-1] != parentAndroidModule {
+				b.walkPath = b.walkPath[0 : len(b.walkPath)-1]
+				b.tagPath = b.tagPath[0 : len(b.tagPath)-1]
+			}
+			b.walkPath = append(b.walkPath, childAndroidModule)
+			b.tagPath = append(b.tagPath, b.OtherModuleDependencyTag(childAndroidModule))
+			return visit(childAndroidModule, parentAndroidModule)
+		} else {
+			return false
+		}
+	})
+}
+
+func (b *baseModuleContext) GetWalkPath() []Module {
+	return b.walkPath
+}
+
+func (b *baseModuleContext) GetTagPath() []blueprint.DependencyTag {
+	return b.tagPath
+}
+
+func (b *baseModuleContext) VisitAllModuleVariants(visit func(Module)) {
+	b.bp.VisitAllModuleVariants(func(module blueprint.Module) {
+		visit(module.(Module))
+	})
+}
+
+func (b *baseModuleContext) PrimaryModule() Module {
+	return b.bp.PrimaryModule().(Module)
+}
+
+func (b *baseModuleContext) FinalModule() Module {
+	return b.bp.FinalModule().(Module)
+}
+
+// IsMetaDependencyTag returns true for cross-cutting metadata dependencies.
+func IsMetaDependencyTag(tag blueprint.DependencyTag) bool {
+	if tag == licenseKindTag {
+		return true
+	} else if tag == licensesTag {
+		return true
+	} else if tag == acDepTag {
+		return true
+	}
+	return false
+}
+
+// A regexp for removing boilerplate from BaseDependencyTag from the string representation of
+// a dependency tag.
+var tagCleaner = regexp.MustCompile(`\QBaseDependencyTag:{}\E(, )?`)
+
+// PrettyPrintTag returns string representation of the tag, but prefers
+// custom String() method if available.
+func PrettyPrintTag(tag blueprint.DependencyTag) string {
+	// Use tag's custom String() method if available.
+	if stringer, ok := tag.(fmt.Stringer); ok {
+		return stringer.String()
+	}
+
+	// Otherwise, get a default string representation of the tag's struct.
+	tagString := fmt.Sprintf("%T: %+v", tag, tag)
+
+	// Remove the boilerplate from BaseDependencyTag as it adds no value.
+	tagString = tagCleaner.ReplaceAllString(tagString, "")
+	return tagString
+}
+
+func (b *baseModuleContext) GetPathString(skipFirst bool) string {
+	sb := strings.Builder{}
+	tagPath := b.GetTagPath()
+	walkPath := b.GetWalkPath()
+	if !skipFirst {
+		sb.WriteString(walkPath[0].String())
+	}
+	for i, m := range walkPath[1:] {
+		sb.WriteString("\n")
+		sb.WriteString(fmt.Sprintf("           via tag %s\n", PrettyPrintTag(tagPath[i])))
+		sb.WriteString(fmt.Sprintf("    -> %s", m.String()))
+	}
+	return sb.String()
+}
+
+func (b *baseModuleContext) Target() Target {
+	return b.target
+}
+
+func (b *baseModuleContext) TargetPrimary() bool {
+	return b.targetPrimary
+}
+
+func (b *baseModuleContext) MultiTargets() []Target {
+	return b.multiTargets
+}
+
+func (b *baseModuleContext) Arch() Arch {
+	return b.target.Arch
+}
+
+func (b *baseModuleContext) Os() OsType {
+	return b.os
+}
+
+func (b *baseModuleContext) Host() bool {
+	return b.os.Class == Host
+}
+
+func (b *baseModuleContext) Device() bool {
+	return b.os.Class == Device
+}
+
+func (b *baseModuleContext) Darwin() bool {
+	return b.os == Darwin
+}
+
+func (b *baseModuleContext) Windows() bool {
+	return b.os == Windows
+}
+
+func (b *baseModuleContext) PrimaryArch() bool {
+	if len(b.config.Targets[b.target.Os]) <= 1 {
+		return true
+	}
+	return b.target.Arch.ArchType == b.config.Targets[b.target.Os][0].Arch.ArchType
+}
diff --git a/android/config.go b/android/config.go
index 4c31bb0..a69adc3 100644
--- a/android/config.go
+++ b/android/config.go
@@ -99,7 +99,7 @@
 
 	UseBazelProxy bool
 
-	BuildFromTextStub bool
+	BuildFromSourceStub bool
 
 	EnsureAllowlistIntegrity bool
 }
@@ -344,9 +344,9 @@
 	// unix sockets, instead of spawning Bazel as a subprocess.
 	UseBazelProxy bool
 
-	// If buildFromTextStub is true then the Java API stubs are
-	// built from the signature text files, not the source Java files.
-	buildFromTextStub bool
+	// If buildFromSourceStub is true then the Java API stubs are
+	// built from the source Java files, not the signature text files.
+	buildFromSourceStub bool
 
 	// If ensureAllowlistIntegrity is true, then the presence of any allowlisted
 	// modules that aren't mixed-built for at least one variant will cause a build
@@ -563,15 +563,13 @@
 		MultitreeBuild: cmdArgs.MultitreeBuild,
 		UseBazelProxy:  cmdArgs.UseBazelProxy,
 
-		buildFromTextStub: cmdArgs.BuildFromTextStub,
+		buildFromSourceStub: cmdArgs.BuildFromSourceStub,
 	}
 
 	config.deviceConfig = &deviceConfig{
 		config: config,
 	}
 
-	config.productVariables.Build_from_text_stub = boolPtr(config.BuildFromTextStub())
-
 	// Soundness check of the build and source directories. This won't catch strange
 	// configurations with symlinks, but at least checks the obvious case.
 	absBuildDir, err := filepath.Abs(cmdArgs.SoongOutDir)
@@ -694,6 +692,7 @@
 		"framework-media":                   {},
 		"framework-mediaprovider":           {},
 		"framework-ondevicepersonalization": {},
+		"framework-pdf":                     {},
 		"framework-permission":              {},
 		"framework-permission-s":            {},
 		"framework-scheduling":              {},
@@ -707,6 +706,8 @@
 		"i18n.module.public.api":            {},
 	}
 
+	config.productVariables.Build_from_text_stub = boolPtr(config.BuildFromTextStub())
+
 	return Config{config}, err
 }
 
@@ -2075,15 +2076,21 @@
 	return c.IsEnvTrue("EMMA_INSTRUMENT") || c.IsEnvTrue("EMMA_INSTRUMENT_STATIC") || c.IsEnvTrue("EMMA_INSTRUMENT_FRAMEWORK")
 }
 
+func (c *deviceConfig) BuildFromSourceStub() bool {
+	return Bool(c.config.productVariables.BuildFromSourceStub)
+}
+
 func (c *config) BuildFromTextStub() bool {
 	// TODO: b/302320354 - Remove the coverage build specific logic once the
 	// robust solution for handling native properties in from-text stub build
 	// is implemented.
-	return c.buildFromTextStub && !c.JavaCoverageEnabled()
+	return !c.buildFromSourceStub &&
+		!c.JavaCoverageEnabled() &&
+		!c.deviceConfig.BuildFromSourceStub()
 }
 
 func (c *config) SetBuildFromTextStub(b bool) {
-	c.buildFromTextStub = b
+	c.buildFromSourceStub = !b
 	c.productVariables.Build_from_text_stub = boolPtr(b)
 }
 
@@ -2129,3 +2136,41 @@
 	val, ok := c.productVariables.BuildFlags[name]
 	return val, ok
 }
+
+var (
+	mainlineApexContributionBuildFlags = []string{
+		"RELEASE_APEX_CONTRIBUTIONS_ADSERVICES",
+		"RELEASE_APEX_CONTRIBUTIONS_APPSEARCH",
+		"RELEASE_APEX_CONTRIBUTIONS_ART",
+		"RELEASE_APEX_CONTRIBUTIONS_BLUETOOTH",
+		"RELEASE_APEX_CONTRIBUTIONS_CONFIGINFRASTRUCTURE",
+		"RELEASE_APEX_CONTRIBUTIONS_CONNECTIVITY",
+		"RELEASE_APEX_CONTRIBUTIONS_CONSCRYPT",
+		"RELEASE_APEX_CONTRIBUTIONS_CRASHRECOVERY",
+		"RELEASE_APEX_CONTRIBUTIONS_DEVICELOCK",
+		"RELEASE_APEX_CONTRIBUTIONS_HEALTHFITNESS",
+		"RELEASE_APEX_CONTRIBUTIONS_IPSEC",
+		"RELEASE_APEX_CONTRIBUTIONS_MEDIA",
+		"RELEASE_APEX_CONTRIBUTIONS_MEDIAPROVIDER",
+		"RELEASE_APEX_CONTRIBUTIONS_ONDEVICEPERSONALIZATION",
+		"RELEASE_APEX_CONTRIBUTIONS_PERMISSION",
+		"RELEASE_APEX_CONTRIBUTIONS_REMOTEKEYPROVISIONING",
+		"RELEASE_APEX_CONTRIBUTIONS_SCHEDULING",
+		"RELEASE_APEX_CONTRIBUTIONS_SDKEXTENSIONS",
+		"RELEASE_APEX_CONTRIBUTIONS_STATSD",
+		"RELEASE_APEX_CONTRIBUTIONS_UWB",
+		"RELEASE_APEX_CONTRIBUTIONS_WIFI",
+	}
+)
+
+// Returns the list of _selected_ apex_contributions
+// Each mainline module will have one entry in the list
+func (c *config) AllApexContributions() []string {
+	ret := []string{}
+	for _, f := range mainlineApexContributionBuildFlags {
+		if val, exists := c.GetBuildFlag(f); exists && val != "" {
+			ret = append(ret, val)
+		}
+	}
+	return ret
+}
diff --git a/android/early_module_context.go b/android/early_module_context.go
new file mode 100644
index 0000000..8f75773
--- /dev/null
+++ b/android/early_module_context.go
@@ -0,0 +1,169 @@
+// Copyright 2015 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package android
+
+import (
+	"github.com/google/blueprint"
+	"os"
+	"text/scanner"
+)
+
+// EarlyModuleContext provides methods that can be called early, as soon as the properties have
+// been parsed into the module and before any mutators have run.
+type EarlyModuleContext interface {
+	// Module returns the current module as a Module.  It should rarely be necessary, as the module already has a
+	// reference to itself.
+	Module() Module
+
+	// ModuleName returns the name of the module.  This is generally the value that was returned by Module.Name() when
+	// the module was created, but may have been modified by calls to BaseMutatorContext.Rename.
+	ModuleName() string
+
+	// ModuleDir returns the path to the directory that contains the definition of the module.
+	ModuleDir() string
+
+	// ModuleType returns the name of the module type that was used to create the module, as specified in
+	// RegisterModuleType.
+	ModuleType() string
+
+	// BlueprintFile returns the name of the blueprint file that contains the definition of this
+	// module.
+	BlueprintsFile() string
+
+	// ContainsProperty returns true if the specified property name was set in the module definition.
+	ContainsProperty(name string) bool
+
+	// Errorf reports an error at the specified position of the module definition file.
+	Errorf(pos scanner.Position, fmt string, args ...interface{})
+
+	// ModuleErrorf reports an error at the line number of the module type in the module definition.
+	ModuleErrorf(fmt string, args ...interface{})
+
+	// PropertyErrorf reports an error at the line number of a property in the module definition.
+	PropertyErrorf(property, fmt string, args ...interface{})
+
+	// Failed returns true if any errors have been reported.  In most cases the module can continue with generating
+	// build rules after an error, allowing it to report additional errors in a single run, but in cases where the error
+	// has prevented the module from creating necessary data it can return early when Failed returns true.
+	Failed() bool
+
+	// AddNinjaFileDeps adds dependencies on the specified files to the rule that creates the ninja manifest.  The
+	// primary builder will be rerun whenever the specified files are modified.
+	AddNinjaFileDeps(deps ...string)
+
+	DeviceSpecific() bool
+	SocSpecific() bool
+	ProductSpecific() bool
+	SystemExtSpecific() bool
+	Platform() bool
+
+	Config() Config
+	DeviceConfig() DeviceConfig
+
+	// Deprecated: use Config()
+	AConfig() Config
+
+	// GlobWithDeps returns a list of files that match the specified pattern but do not match any
+	// of the patterns in excludes.  It also adds efficient dependencies to rerun the primary
+	// builder whenever a file matching the pattern as added or removed, without rerunning if a
+	// file that does not match the pattern is added to a searched directory.
+	GlobWithDeps(pattern string, excludes []string) ([]string, error)
+
+	Glob(globPattern string, excludes []string) Paths
+	GlobFiles(globPattern string, excludes []string) Paths
+	IsSymlink(path Path) bool
+	Readlink(path Path) string
+
+	// Namespace returns the Namespace object provided by the NameInterface set by Context.SetNameInterface, or the
+	// default SimpleNameInterface if Context.SetNameInterface was not called.
+	Namespace() *Namespace
+}
+
+// Deprecated: use EarlyModuleContext instead
+type BaseContext interface {
+	EarlyModuleContext
+}
+
+type earlyModuleContext struct {
+	blueprint.EarlyModuleContext
+
+	kind   moduleKind
+	config Config
+}
+
+func (e *earlyModuleContext) Glob(globPattern string, excludes []string) Paths {
+	return Glob(e, globPattern, excludes)
+}
+
+func (e *earlyModuleContext) GlobFiles(globPattern string, excludes []string) Paths {
+	return GlobFiles(e, globPattern, excludes)
+}
+
+func (e *earlyModuleContext) IsSymlink(path Path) bool {
+	fileInfo, err := e.config.fs.Lstat(path.String())
+	if err != nil {
+		e.ModuleErrorf("os.Lstat(%q) failed: %s", path.String(), err)
+	}
+	return fileInfo.Mode()&os.ModeSymlink == os.ModeSymlink
+}
+
+func (e *earlyModuleContext) Readlink(path Path) string {
+	dest, err := e.config.fs.Readlink(path.String())
+	if err != nil {
+		e.ModuleErrorf("os.Readlink(%q) failed: %s", path.String(), err)
+	}
+	return dest
+}
+
+func (e *earlyModuleContext) Module() Module {
+	module, _ := e.EarlyModuleContext.Module().(Module)
+	return module
+}
+
+func (e *earlyModuleContext) Config() Config {
+	return e.EarlyModuleContext.Config().(Config)
+}
+
+func (e *earlyModuleContext) AConfig() Config {
+	return e.config
+}
+
+func (e *earlyModuleContext) DeviceConfig() DeviceConfig {
+	return DeviceConfig{e.config.deviceConfig}
+}
+
+func (e *earlyModuleContext) Platform() bool {
+	return e.kind == platformModule
+}
+
+func (e *earlyModuleContext) DeviceSpecific() bool {
+	return e.kind == deviceSpecificModule
+}
+
+func (e *earlyModuleContext) SocSpecific() bool {
+	return e.kind == socSpecificModule
+}
+
+func (e *earlyModuleContext) ProductSpecific() bool {
+	return e.kind == productSpecificModule
+}
+
+func (e *earlyModuleContext) SystemExtSpecific() bool {
+	return e.kind == systemExtSpecificModule
+}
+
+func (e *earlyModuleContext) Namespace() *Namespace {
+	return e.EarlyModuleContext.Namespace().(*Namespace)
+}
diff --git a/android/module.go b/android/module.go
index 250161f..af69a1b 100644
--- a/android/module.go
+++ b/android/module.go
@@ -15,22 +15,17 @@
 package android
 
 import (
+	"android/soong/bazel"
+	"android/soong/ui/metrics/bp2build_metrics_proto"
 	"crypto/md5"
 	"encoding/hex"
 	"encoding/json"
 	"fmt"
 	"net/url"
-	"os"
-	"path"
 	"path/filepath"
 	"reflect"
-	"regexp"
 	"sort"
 	"strings"
-	"text/scanner"
-
-	"android/soong/bazel"
-	"android/soong/ui/metrics/bp2build_metrics_proto"
 
 	"github.com/google/blueprint"
 	"github.com/google/blueprint/proptools"
@@ -41,469 +36,6 @@
 	DeviceStaticLibrary = "static_library"
 )
 
-// BuildParameters describes the set of potential parameters to build a Ninja rule.
-// In general, these correspond to a Ninja concept.
-type BuildParams struct {
-	// A Ninja Rule that will be written to the Ninja file. This allows factoring out common code
-	// among multiple modules to reduce repetition in the Ninja file of action requirements. A rule
-	// can contain variables that should be provided in Args.
-	Rule blueprint.Rule
-	// Deps represents the depfile format. When using RuleBuilder, this defaults to GCC when depfiles
-	// are used.
-	Deps blueprint.Deps
-	// Depfile is a writeable path that allows correct incremental builds when the inputs have not
-	// been fully specified by the Ninja rule. Ninja supports a subset of the Makefile depfile syntax.
-	Depfile WritablePath
-	// A description of the build action.
-	Description string
-	// Output is an output file of the action. When using this field, references to $out in the Ninja
-	// command will refer to this file.
-	Output WritablePath
-	// Outputs is a slice of output file of the action. When using this field, references to $out in
-	// the Ninja command will refer to these files.
-	Outputs WritablePaths
-	// SymlinkOutput is an output file specifically that is a symlink.
-	SymlinkOutput WritablePath
-	// SymlinkOutputs is a slice of output files specifically that is a symlink.
-	SymlinkOutputs WritablePaths
-	// ImplicitOutput is an output file generated by the action. Note: references to `$out` in the
-	// Ninja command will NOT include references to this file.
-	ImplicitOutput WritablePath
-	// ImplicitOutputs is a slice of output files generated by the action. Note: references to `$out`
-	// in the Ninja command will NOT include references to these files.
-	ImplicitOutputs WritablePaths
-	// Input is an input file to the Ninja action. When using this field, references to $in in the
-	// Ninja command will refer to this file.
-	Input Path
-	// Inputs is a slice of input files to the Ninja action. When using this field, references to $in
-	// in the Ninja command will refer to these files.
-	Inputs Paths
-	// Implicit is an input file to the Ninja action. Note: references to `$in` in the Ninja command
-	// will NOT include references to this file.
-	Implicit Path
-	// Implicits is a slice of input files to the Ninja action. Note: references to `$in` in the Ninja
-	// command will NOT include references to these files.
-	Implicits Paths
-	// OrderOnly are Ninja order-only inputs to the action. When these are out of date, the output is
-	// not rebuilt until they are built, but changes in order-only dependencies alone do not cause the
-	// output to be rebuilt.
-	OrderOnly Paths
-	// Validation is an output path for a validation action. Validation outputs imply lower
-	// non-blocking priority to building non-validation outputs.
-	Validation Path
-	// Validations is a slice of output path for a validation action. Validation outputs imply lower
-	// non-blocking priority to building non-validation outputs.
-	Validations Paths
-	// Whether to skip outputting a default target statement which will be built by Ninja when no
-	// targets are specified on Ninja's command line.
-	Default bool
-	// Args is a key value mapping for replacements of variables within the Rule
-	Args map[string]string
-}
-
-type ModuleBuildParams BuildParams
-
-// EarlyModuleContext provides methods that can be called early, as soon as the properties have
-// been parsed into the module and before any mutators have run.
-type EarlyModuleContext interface {
-	// Module returns the current module as a Module.  It should rarely be necessary, as the module already has a
-	// reference to itself.
-	Module() Module
-
-	// ModuleName returns the name of the module.  This is generally the value that was returned by Module.Name() when
-	// the module was created, but may have been modified by calls to BaseMutatorContext.Rename.
-	ModuleName() string
-
-	// ModuleDir returns the path to the directory that contains the definition of the module.
-	ModuleDir() string
-
-	// ModuleType returns the name of the module type that was used to create the module, as specified in
-	// RegisterModuleType.
-	ModuleType() string
-
-	// BlueprintFile returns the name of the blueprint file that contains the definition of this
-	// module.
-	BlueprintsFile() string
-
-	// ContainsProperty returns true if the specified property name was set in the module definition.
-	ContainsProperty(name string) bool
-
-	// Errorf reports an error at the specified position of the module definition file.
-	Errorf(pos scanner.Position, fmt string, args ...interface{})
-
-	// ModuleErrorf reports an error at the line number of the module type in the module definition.
-	ModuleErrorf(fmt string, args ...interface{})
-
-	// PropertyErrorf reports an error at the line number of a property in the module definition.
-	PropertyErrorf(property, fmt string, args ...interface{})
-
-	// Failed returns true if any errors have been reported.  In most cases the module can continue with generating
-	// build rules after an error, allowing it to report additional errors in a single run, but in cases where the error
-	// has prevented the module from creating necessary data it can return early when Failed returns true.
-	Failed() bool
-
-	// AddNinjaFileDeps adds dependencies on the specified files to the rule that creates the ninja manifest.  The
-	// primary builder will be rerun whenever the specified files are modified.
-	AddNinjaFileDeps(deps ...string)
-
-	DeviceSpecific() bool
-	SocSpecific() bool
-	ProductSpecific() bool
-	SystemExtSpecific() bool
-	Platform() bool
-
-	Config() Config
-	DeviceConfig() DeviceConfig
-
-	// Deprecated: use Config()
-	AConfig() Config
-
-	// GlobWithDeps returns a list of files that match the specified pattern but do not match any
-	// of the patterns in excludes.  It also adds efficient dependencies to rerun the primary
-	// builder whenever a file matching the pattern as added or removed, without rerunning if a
-	// file that does not match the pattern is added to a searched directory.
-	GlobWithDeps(pattern string, excludes []string) ([]string, error)
-
-	Glob(globPattern string, excludes []string) Paths
-	GlobFiles(globPattern string, excludes []string) Paths
-	IsSymlink(path Path) bool
-	Readlink(path Path) string
-
-	// Namespace returns the Namespace object provided by the NameInterface set by Context.SetNameInterface, or the
-	// default SimpleNameInterface if Context.SetNameInterface was not called.
-	Namespace() *Namespace
-}
-
-// BaseModuleContext is the same as blueprint.BaseModuleContext except that Config() returns
-// a Config instead of an interface{}, and some methods have been wrapped to use an android.Module
-// instead of a blueprint.Module, plus some extra methods that return Android-specific information
-// about the current module.
-type BaseModuleContext interface {
-	EarlyModuleContext
-
-	blueprintBaseModuleContext() blueprint.BaseModuleContext
-
-	// OtherModuleName returns the name of another Module.  See BaseModuleContext.ModuleName for more information.
-	// It is intended for use inside the visit functions of Visit* and WalkDeps.
-	OtherModuleName(m blueprint.Module) string
-
-	// OtherModuleDir returns the directory of another Module.  See BaseModuleContext.ModuleDir for more information.
-	// It is intended for use inside the visit functions of Visit* and WalkDeps.
-	OtherModuleDir(m blueprint.Module) string
-
-	// OtherModuleErrorf reports an error on another Module.  See BaseModuleContext.ModuleErrorf for more information.
-	// It is intended for use inside the visit functions of Visit* and WalkDeps.
-	OtherModuleErrorf(m blueprint.Module, fmt string, args ...interface{})
-
-	// OtherModuleDependencyTag returns the dependency tag used to depend on a module, or nil if there is no dependency
-	// on the module.  When called inside a Visit* method with current module being visited, and there are multiple
-	// dependencies on the module being visited, it returns the dependency tag used for the current dependency.
-	OtherModuleDependencyTag(m blueprint.Module) blueprint.DependencyTag
-
-	// OtherModuleExists returns true if a module with the specified name exists, as determined by the NameInterface
-	// passed to Context.SetNameInterface, or SimpleNameInterface if it was not called.
-	OtherModuleExists(name string) bool
-
-	// OtherModuleDependencyVariantExists returns true if a module with the
-	// specified name and variant exists. The variant must match the given
-	// variations. It must also match all the non-local variations of the current
-	// module. In other words, it checks for the module that AddVariationDependencies
-	// would add a dependency on with the same arguments.
-	OtherModuleDependencyVariantExists(variations []blueprint.Variation, name string) bool
-
-	// OtherModuleFarDependencyVariantExists returns true if a module with the
-	// specified name and variant exists. The variant must match the given
-	// variations, but not the non-local variations of the current module. In
-	// other words, it checks for the module that AddFarVariationDependencies
-	// would add a dependency on with the same arguments.
-	OtherModuleFarDependencyVariantExists(variations []blueprint.Variation, name string) bool
-
-	// OtherModuleReverseDependencyVariantExists returns true if a module with the
-	// specified name exists with the same variations as the current module. In
-	// other words, it checks for the module that AddReverseDependency would add a
-	// dependency on with the same argument.
-	OtherModuleReverseDependencyVariantExists(name string) bool
-
-	// OtherModuleType returns the type of another Module.  See BaseModuleContext.ModuleType for more information.
-	// It is intended for use inside the visit functions of Visit* and WalkDeps.
-	OtherModuleType(m blueprint.Module) string
-
-	// OtherModuleProvider returns the value for a provider for the given module.  If the value is
-	// not set it returns the zero value of the type of the provider, so the return value can always
-	// be type asserted to the type of the provider.  The value returned may be a deep copy of the
-	// value originally passed to SetProvider.
-	OtherModuleProvider(m blueprint.Module, provider blueprint.ProviderKey) interface{}
-
-	// OtherModuleHasProvider returns true if the provider for the given module has been set.
-	OtherModuleHasProvider(m blueprint.Module, provider blueprint.ProviderKey) bool
-
-	// Provider returns the value for a provider for the current module.  If the value is
-	// not set it returns the zero value of the type of the provider, so the return value can always
-	// be type asserted to the type of the provider.  It panics if called before the appropriate
-	// mutator or GenerateBuildActions pass for the provider.  The value returned may be a deep
-	// copy of the value originally passed to SetProvider.
-	Provider(provider blueprint.ProviderKey) interface{}
-
-	// HasProvider returns true if the provider for the current module has been set.
-	HasProvider(provider blueprint.ProviderKey) bool
-
-	// SetProvider sets the value for a provider for the current module.  It panics if not called
-	// during the appropriate mutator or GenerateBuildActions pass for the provider, if the value
-	// is not of the appropriate type, or if the value has already been set.  The value should not
-	// be modified after being passed to SetProvider.
-	SetProvider(provider blueprint.ProviderKey, value interface{})
-
-	GetDirectDepsWithTag(tag blueprint.DependencyTag) []Module
-
-	// GetDirectDepWithTag returns the Module the direct dependency with the specified name, or nil if
-	// none exists.  It panics if the dependency does not have the specified tag.  It skips any
-	// dependencies that are not an android.Module.
-	GetDirectDepWithTag(name string, tag blueprint.DependencyTag) blueprint.Module
-
-	// GetDirectDep returns the Module and DependencyTag for the  direct dependency with the specified
-	// name, or nil if none exists.  If there are multiple dependencies on the same module it returns
-	// the first DependencyTag.
-	GetDirectDep(name string) (blueprint.Module, blueprint.DependencyTag)
-
-	ModuleFromName(name string) (blueprint.Module, bool)
-
-	// VisitDirectDepsBlueprint calls visit for each direct dependency.  If there are multiple
-	// direct dependencies on the same module visit will be called multiple times on that module
-	// and OtherModuleDependencyTag will return a different tag for each.
-	//
-	// The Module passed to the visit function should not be retained outside of the visit
-	// function, it may be invalidated by future mutators.
-	VisitDirectDepsBlueprint(visit func(blueprint.Module))
-
-	// VisitDirectDeps calls visit for each direct dependency.  If there are multiple
-	// direct dependencies on the same module visit will be called multiple times on that module
-	// and OtherModuleDependencyTag will return a different tag for each.  It raises an error if any of the
-	// dependencies are not an android.Module.
-	//
-	// The Module passed to the visit function should not be retained outside of the visit
-	// function, it may be invalidated by future mutators.
-	VisitDirectDeps(visit func(Module))
-
-	VisitDirectDepsWithTag(tag blueprint.DependencyTag, visit func(Module))
-
-	// VisitDirectDepsIf calls pred for each direct dependency, and if pred returns true calls visit.  If there are
-	// multiple direct dependencies on the same module pred and visit will be called multiple times on that module and
-	// OtherModuleDependencyTag will return a different tag for each.  It skips any
-	// dependencies that are not an android.Module.
-	//
-	// The Module passed to the visit function should not be retained outside of the visit function, it may be
-	// invalidated by future mutators.
-	VisitDirectDepsIf(pred func(Module) bool, visit func(Module))
-	// Deprecated: use WalkDeps instead to support multiple dependency tags on the same module
-	VisitDepsDepthFirst(visit func(Module))
-	// Deprecated: use WalkDeps instead to support multiple dependency tags on the same module
-	VisitDepsDepthFirstIf(pred func(Module) bool, visit func(Module))
-
-	// WalkDeps calls visit for each transitive dependency, traversing the dependency tree in top down order.  visit may
-	// be called multiple times for the same (child, parent) pair if there are multiple direct dependencies between the
-	// child and parent with different tags.  OtherModuleDependencyTag will return the tag for the currently visited
-	// (child, parent) pair.  If visit returns false WalkDeps will not continue recursing down to child.  It skips
-	// any dependencies that are not an android.Module.
-	//
-	// The Modules passed to the visit function should not be retained outside of the visit function, they may be
-	// invalidated by future mutators.
-	WalkDeps(visit func(child, parent Module) bool)
-
-	// WalkDepsBlueprint calls visit for each transitive dependency, traversing the dependency
-	// tree in top down order.  visit may be called multiple times for the same (child, parent)
-	// pair if there are multiple direct dependencies between the child and parent with different
-	// tags.  OtherModuleDependencyTag will return the tag for the currently visited
-	// (child, parent) pair.  If visit returns false WalkDeps will not continue recursing down
-	// to child.
-	//
-	// The Modules passed to the visit function should not be retained outside of the visit function, they may be
-	// invalidated by future mutators.
-	WalkDepsBlueprint(visit func(blueprint.Module, blueprint.Module) bool)
-
-	// GetWalkPath is supposed to be called in visit function passed in WalkDeps()
-	// and returns a top-down dependency path from a start module to current child module.
-	GetWalkPath() []Module
-
-	// PrimaryModule returns the first variant of the current module.  Variants of a module are always visited in
-	// order by mutators and GenerateBuildActions, so the data created by the current mutator can be read from the
-	// Module returned by PrimaryModule without data races.  This can be used to perform singleton actions that are
-	// only done once for all variants of a module.
-	PrimaryModule() Module
-
-	// FinalModule returns the last variant of the current module.  Variants of a module are always visited in
-	// order by mutators and GenerateBuildActions, so the data created by the current mutator can be read from all
-	// variants using VisitAllModuleVariants if the current module == FinalModule().  This can be used to perform
-	// singleton actions that are only done once for all variants of a module.
-	FinalModule() Module
-
-	// VisitAllModuleVariants calls visit for each variant of the current module.  Variants of a module are always
-	// visited in order by mutators and GenerateBuildActions, so the data created by the current mutator can be read
-	// from all variants if the current module == FinalModule().  Otherwise, care must be taken to not access any
-	// data modified by the current mutator.
-	VisitAllModuleVariants(visit func(Module))
-
-	// GetTagPath is supposed to be called in visit function passed in WalkDeps()
-	// and returns a top-down dependency tags path from a start module to current child module.
-	// It has one less entry than GetWalkPath() as it contains the dependency tags that
-	// exist between each adjacent pair of modules in the GetWalkPath().
-	// GetTagPath()[i] is the tag between GetWalkPath()[i] and GetWalkPath()[i+1]
-	GetTagPath() []blueprint.DependencyTag
-
-	// GetPathString is supposed to be called in visit function passed in WalkDeps()
-	// and returns a multi-line string showing the modules and dependency tags
-	// among them along the top-down dependency path from a start module to current child module.
-	// skipFirst when set to true, the output doesn't include the start module,
-	// which is already printed when this function is used along with ModuleErrorf().
-	GetPathString(skipFirst bool) string
-
-	AddMissingDependencies(missingDeps []string)
-
-	// getMissingDependencies returns the list of missing dependencies.
-	// Calling this function prevents adding new dependencies.
-	getMissingDependencies() []string
-
-	// AddUnconvertedBp2buildDep stores module name of a direct dependency that was not converted via bp2build
-	AddUnconvertedBp2buildDep(dep string)
-
-	// AddMissingBp2buildDep stores the module name of a direct dependency that was not found.
-	AddMissingBp2buildDep(dep string)
-
-	Target() Target
-	TargetPrimary() bool
-
-	// The additional arch specific targets (e.g. 32/64 bit) that this module variant is
-	// responsible for creating.
-	MultiTargets() []Target
-	Arch() Arch
-	Os() OsType
-	Host() bool
-	Device() bool
-	Darwin() bool
-	Windows() bool
-	PrimaryArch() bool
-}
-
-// Deprecated: use EarlyModuleContext instead
-type BaseContext interface {
-	EarlyModuleContext
-}
-
-type ModuleContext interface {
-	BaseModuleContext
-
-	blueprintModuleContext() blueprint.ModuleContext
-
-	// Deprecated: use ModuleContext.Build instead.
-	ModuleBuild(pctx PackageContext, params ModuleBuildParams)
-
-	// Returns a list of paths expanded from globs and modules referenced using ":module" syntax.  The property must
-	// be tagged with `android:"path" to support automatic source module dependency resolution.
-	//
-	// Deprecated: use PathsForModuleSrc or PathsForModuleSrcExcludes instead.
-	ExpandSources(srcFiles, excludes []string) Paths
-
-	// Returns a single path expanded from globs and modules referenced using ":module" syntax.  The property must
-	// be tagged with `android:"path" to support automatic source module dependency resolution.
-	//
-	// Deprecated: use PathForModuleSrc instead.
-	ExpandSource(srcFile, prop string) Path
-
-	ExpandOptionalSource(srcFile *string, prop string) OptionalPath
-
-	// InstallExecutable creates a rule to copy srcPath to name in the installPath directory,
-	// with the given additional dependencies.  The file is marked executable after copying.
-	//
-	// The installed file will be returned by FilesToInstall(), and the PackagingSpec for the
-	// installed file will be returned by PackagingSpecs() on this module or by
-	// TransitivePackagingSpecs() on modules that depend on this module through dependency tags
-	// for which IsInstallDepNeeded returns true.
-	InstallExecutable(installPath InstallPath, name string, srcPath Path, deps ...Path) InstallPath
-
-	// InstallFile creates a rule to copy srcPath to name in the installPath directory,
-	// with the given additional dependencies.
-	//
-	// The installed file will be returned by FilesToInstall(), and the PackagingSpec for the
-	// installed file will be returned by PackagingSpecs() on this module or by
-	// TransitivePackagingSpecs() on modules that depend on this module through dependency tags
-	// for which IsInstallDepNeeded returns true.
-	InstallFile(installPath InstallPath, name string, srcPath Path, deps ...Path) InstallPath
-
-	// InstallFileWithExtraFilesZip creates a rule to copy srcPath to name in the installPath
-	// directory, and also unzip a zip file containing extra files to install into the same
-	// directory.
-	//
-	// The installed file will be returned by FilesToInstall(), and the PackagingSpec for the
-	// installed file will be returned by PackagingSpecs() on this module or by
-	// TransitivePackagingSpecs() on modules that depend on this module through dependency tags
-	// for which IsInstallDepNeeded returns true.
-	InstallFileWithExtraFilesZip(installPath InstallPath, name string, srcPath Path, extraZip Path, deps ...Path) InstallPath
-
-	// InstallSymlink creates a rule to create a symlink from src srcPath to name in the installPath
-	// directory.
-	//
-	// The installed symlink will be returned by FilesToInstall(), and the PackagingSpec for the
-	// installed file will be returned by PackagingSpecs() on this module or by
-	// TransitivePackagingSpecs() on modules that depend on this module through dependency tags
-	// for which IsInstallDepNeeded returns true.
-	InstallSymlink(installPath InstallPath, name string, srcPath InstallPath) InstallPath
-
-	// InstallAbsoluteSymlink creates a rule to create an absolute symlink from src srcPath to name
-	// in the installPath directory.
-	//
-	// The installed symlink will be returned by FilesToInstall(), and the PackagingSpec for the
-	// installed file will be returned by PackagingSpecs() on this module or by
-	// TransitivePackagingSpecs() on modules that depend on this module through dependency tags
-	// for which IsInstallDepNeeded returns true.
-	InstallAbsoluteSymlink(installPath InstallPath, name string, absPath string) InstallPath
-
-	// PackageFile creates a PackagingSpec as if InstallFile was called, but without creating
-	// the rule to copy the file.  This is useful to define how a module would be packaged
-	// without installing it into the global installation directories.
-	//
-	// The created PackagingSpec for the will be returned by PackagingSpecs() on this module or by
-	// TransitivePackagingSpecs() on modules that depend on this module through dependency tags
-	// for which IsInstallDepNeeded returns true.
-	PackageFile(installPath InstallPath, name string, srcPath Path) PackagingSpec
-
-	CheckbuildFile(srcPath Path)
-
-	InstallInData() bool
-	InstallInTestcases() bool
-	InstallInSanitizerDir() bool
-	InstallInRamdisk() bool
-	InstallInVendorRamdisk() bool
-	InstallInDebugRamdisk() bool
-	InstallInRecovery() bool
-	InstallInRoot() bool
-	InstallInVendor() bool
-	InstallForceOS() (*OsType, *ArchType)
-
-	RequiredModuleNames() []string
-	HostRequiredModuleNames() []string
-	TargetRequiredModuleNames() []string
-
-	ModuleSubDir() string
-	SoongConfigTraceHash() string
-
-	Variable(pctx PackageContext, name, value string)
-	Rule(pctx PackageContext, name string, params blueprint.RuleParams, argNames ...string) blueprint.Rule
-	// Similar to blueprint.ModuleContext.Build, but takes Paths instead of []string,
-	// and performs more verification.
-	Build(pctx PackageContext, params BuildParams)
-	// Phony creates a Make-style phony rule, a rule with no commands that can depend on other
-	// phony rules or real files.  Phony can be called on the same name multiple times to add
-	// additional dependencies.
-	Phony(phony string, deps ...Path)
-
-	// GetMissingDependencies returns the list of dependencies that were passed to AddDependencies or related methods,
-	// but do not exist.
-	GetMissingDependencies() []string
-
-	// LicenseMetadataFile returns the path where the license metadata for this module will be
-	// generated.
-	LicenseMetadataFile() Path
-}
-
 type Module interface {
 	blueprint.Module
 
@@ -1677,18 +1209,6 @@
 	return m.commonProperties.BazelConversionStatus.Partition
 }
 
-// AddUnconvertedBp2buildDep stores module name of a dependency that was not converted to Bazel.
-func (b *baseModuleContext) AddUnconvertedBp2buildDep(dep string) {
-	unconvertedDeps := &b.Module().base().commonProperties.BazelConversionStatus.UnconvertedDeps
-	*unconvertedDeps = append(*unconvertedDeps, dep)
-}
-
-// AddMissingBp2buildDep stores module name of a dependency that was not found in a Android.bp file.
-func (b *baseModuleContext) AddMissingBp2buildDep(dep string) {
-	missingDeps := &b.Module().base().commonProperties.BazelConversionStatus.MissingDeps
-	*missingDeps = append(*missingDeps, dep)
-}
-
 // GetUnconvertedBp2buildDeps returns the list of module names of this module's direct dependencies that
 // were not converted to Bazel.
 func (m *ModuleBase) GetUnconvertedBp2buildDeps() []string {
@@ -2605,162 +2125,6 @@
 
 }
 
-type earlyModuleContext struct {
-	blueprint.EarlyModuleContext
-
-	kind   moduleKind
-	config Config
-}
-
-func (e *earlyModuleContext) Glob(globPattern string, excludes []string) Paths {
-	return Glob(e, globPattern, excludes)
-}
-
-func (e *earlyModuleContext) GlobFiles(globPattern string, excludes []string) Paths {
-	return GlobFiles(e, globPattern, excludes)
-}
-
-func (e *earlyModuleContext) IsSymlink(path Path) bool {
-	fileInfo, err := e.config.fs.Lstat(path.String())
-	if err != nil {
-		e.ModuleErrorf("os.Lstat(%q) failed: %s", path.String(), err)
-	}
-	return fileInfo.Mode()&os.ModeSymlink == os.ModeSymlink
-}
-
-func (e *earlyModuleContext) Readlink(path Path) string {
-	dest, err := e.config.fs.Readlink(path.String())
-	if err != nil {
-		e.ModuleErrorf("os.Readlink(%q) failed: %s", path.String(), err)
-	}
-	return dest
-}
-
-func (e *earlyModuleContext) Module() Module {
-	module, _ := e.EarlyModuleContext.Module().(Module)
-	return module
-}
-
-func (e *earlyModuleContext) Config() Config {
-	return e.EarlyModuleContext.Config().(Config)
-}
-
-func (e *earlyModuleContext) AConfig() Config {
-	return e.config
-}
-
-func (e *earlyModuleContext) DeviceConfig() DeviceConfig {
-	return DeviceConfig{e.config.deviceConfig}
-}
-
-func (e *earlyModuleContext) Platform() bool {
-	return e.kind == platformModule
-}
-
-func (e *earlyModuleContext) DeviceSpecific() bool {
-	return e.kind == deviceSpecificModule
-}
-
-func (e *earlyModuleContext) SocSpecific() bool {
-	return e.kind == socSpecificModule
-}
-
-func (e *earlyModuleContext) ProductSpecific() bool {
-	return e.kind == productSpecificModule
-}
-
-func (e *earlyModuleContext) SystemExtSpecific() bool {
-	return e.kind == systemExtSpecificModule
-}
-
-func (e *earlyModuleContext) Namespace() *Namespace {
-	return e.EarlyModuleContext.Namespace().(*Namespace)
-}
-
-type baseModuleContext struct {
-	bp blueprint.BaseModuleContext
-	earlyModuleContext
-	os            OsType
-	target        Target
-	multiTargets  []Target
-	targetPrimary bool
-
-	walkPath []Module
-	tagPath  []blueprint.DependencyTag
-
-	strictVisitDeps bool // If true, enforce that all dependencies are enabled
-
-	bazelConversionMode bool
-}
-
-func (b *baseModuleContext) isBazelConversionMode() bool {
-	return b.bazelConversionMode
-}
-func (b *baseModuleContext) OtherModuleName(m blueprint.Module) string {
-	return b.bp.OtherModuleName(m)
-}
-func (b *baseModuleContext) OtherModuleDir(m blueprint.Module) string { return b.bp.OtherModuleDir(m) }
-func (b *baseModuleContext) OtherModuleErrorf(m blueprint.Module, fmt string, args ...interface{}) {
-	b.bp.OtherModuleErrorf(m, fmt, args...)
-}
-func (b *baseModuleContext) OtherModuleDependencyTag(m blueprint.Module) blueprint.DependencyTag {
-	return b.bp.OtherModuleDependencyTag(m)
-}
-func (b *baseModuleContext) OtherModuleExists(name string) bool { return b.bp.OtherModuleExists(name) }
-func (b *baseModuleContext) OtherModuleDependencyVariantExists(variations []blueprint.Variation, name string) bool {
-	return b.bp.OtherModuleDependencyVariantExists(variations, name)
-}
-func (b *baseModuleContext) OtherModuleFarDependencyVariantExists(variations []blueprint.Variation, name string) bool {
-	return b.bp.OtherModuleFarDependencyVariantExists(variations, name)
-}
-func (b *baseModuleContext) OtherModuleReverseDependencyVariantExists(name string) bool {
-	return b.bp.OtherModuleReverseDependencyVariantExists(name)
-}
-func (b *baseModuleContext) OtherModuleType(m blueprint.Module) string {
-	return b.bp.OtherModuleType(m)
-}
-func (b *baseModuleContext) OtherModuleProvider(m blueprint.Module, provider blueprint.ProviderKey) interface{} {
-	return b.bp.OtherModuleProvider(m, provider)
-}
-func (b *baseModuleContext) OtherModuleHasProvider(m blueprint.Module, provider blueprint.ProviderKey) bool {
-	return b.bp.OtherModuleHasProvider(m, provider)
-}
-func (b *baseModuleContext) Provider(provider blueprint.ProviderKey) interface{} {
-	return b.bp.Provider(provider)
-}
-func (b *baseModuleContext) HasProvider(provider blueprint.ProviderKey) bool {
-	return b.bp.HasProvider(provider)
-}
-func (b *baseModuleContext) SetProvider(provider blueprint.ProviderKey, value interface{}) {
-	b.bp.SetProvider(provider, value)
-}
-
-func (b *baseModuleContext) GetDirectDepWithTag(name string, tag blueprint.DependencyTag) blueprint.Module {
-	return b.bp.GetDirectDepWithTag(name, tag)
-}
-
-func (b *baseModuleContext) blueprintBaseModuleContext() blueprint.BaseModuleContext {
-	return b.bp
-}
-
-type moduleContext struct {
-	bp blueprint.ModuleContext
-	baseModuleContext
-	packagingSpecs  []PackagingSpec
-	installFiles    InstallPaths
-	checkbuildFiles Paths
-	module          Module
-	phonies         map[string]Paths
-
-	katiInstalls []katiInstall
-	katiSymlinks []katiInstall
-
-	// For tests
-	buildParams []BuildParams
-	ruleParams  map[blueprint.Rule]blueprint.RuleParams
-	variables   map[string]string
-}
-
 // katiInstall stores a request from Soong to Make to create an install rule.
 type katiInstall struct {
 	from          Path
@@ -2804,523 +2168,6 @@
 	return paths
 }
 
-func (m *moduleContext) ninjaError(params BuildParams, err error) (PackageContext, BuildParams) {
-	return pctx, BuildParams{
-		Rule:            ErrorRule,
-		Description:     params.Description,
-		Output:          params.Output,
-		Outputs:         params.Outputs,
-		ImplicitOutput:  params.ImplicitOutput,
-		ImplicitOutputs: params.ImplicitOutputs,
-		Args: map[string]string{
-			"error": err.Error(),
-		},
-	}
-}
-
-func (m *moduleContext) ModuleBuild(pctx PackageContext, params ModuleBuildParams) {
-	m.Build(pctx, BuildParams(params))
-}
-
-func validateBuildParams(params blueprint.BuildParams) error {
-	// Validate that the symlink outputs are declared outputs or implicit outputs
-	allOutputs := map[string]bool{}
-	for _, output := range params.Outputs {
-		allOutputs[output] = true
-	}
-	for _, output := range params.ImplicitOutputs {
-		allOutputs[output] = true
-	}
-	for _, symlinkOutput := range params.SymlinkOutputs {
-		if !allOutputs[symlinkOutput] {
-			return fmt.Errorf(
-				"Symlink output %s is not a declared output or implicit output",
-				symlinkOutput)
-		}
-	}
-	return nil
-}
-
-// Convert build parameters from their concrete Android types into their string representations,
-// and combine the singular and plural fields of the same type (e.g. Output and Outputs).
-func convertBuildParams(params BuildParams) blueprint.BuildParams {
-	bparams := blueprint.BuildParams{
-		Rule:            params.Rule,
-		Description:     params.Description,
-		Deps:            params.Deps,
-		Outputs:         params.Outputs.Strings(),
-		ImplicitOutputs: params.ImplicitOutputs.Strings(),
-		SymlinkOutputs:  params.SymlinkOutputs.Strings(),
-		Inputs:          params.Inputs.Strings(),
-		Implicits:       params.Implicits.Strings(),
-		OrderOnly:       params.OrderOnly.Strings(),
-		Validations:     params.Validations.Strings(),
-		Args:            params.Args,
-		Optional:        !params.Default,
-	}
-
-	if params.Depfile != nil {
-		bparams.Depfile = params.Depfile.String()
-	}
-	if params.Output != nil {
-		bparams.Outputs = append(bparams.Outputs, params.Output.String())
-	}
-	if params.SymlinkOutput != nil {
-		bparams.SymlinkOutputs = append(bparams.SymlinkOutputs, params.SymlinkOutput.String())
-	}
-	if params.ImplicitOutput != nil {
-		bparams.ImplicitOutputs = append(bparams.ImplicitOutputs, params.ImplicitOutput.String())
-	}
-	if params.Input != nil {
-		bparams.Inputs = append(bparams.Inputs, params.Input.String())
-	}
-	if params.Implicit != nil {
-		bparams.Implicits = append(bparams.Implicits, params.Implicit.String())
-	}
-	if params.Validation != nil {
-		bparams.Validations = append(bparams.Validations, params.Validation.String())
-	}
-
-	bparams.Outputs = proptools.NinjaEscapeList(bparams.Outputs)
-	bparams.ImplicitOutputs = proptools.NinjaEscapeList(bparams.ImplicitOutputs)
-	bparams.SymlinkOutputs = proptools.NinjaEscapeList(bparams.SymlinkOutputs)
-	bparams.Inputs = proptools.NinjaEscapeList(bparams.Inputs)
-	bparams.Implicits = proptools.NinjaEscapeList(bparams.Implicits)
-	bparams.OrderOnly = proptools.NinjaEscapeList(bparams.OrderOnly)
-	bparams.Validations = proptools.NinjaEscapeList(bparams.Validations)
-	bparams.Depfile = proptools.NinjaEscape(bparams.Depfile)
-
-	return bparams
-}
-
-func (m *moduleContext) Variable(pctx PackageContext, name, value string) {
-	if m.config.captureBuild {
-		m.variables[name] = value
-	}
-
-	m.bp.Variable(pctx.PackageContext, name, value)
-}
-
-func (m *moduleContext) Rule(pctx PackageContext, name string, params blueprint.RuleParams,
-	argNames ...string) blueprint.Rule {
-
-	if m.config.UseRemoteBuild() {
-		if params.Pool == nil {
-			// When USE_GOMA=true or USE_RBE=true are set and the rule is not supported by goma/RBE, restrict
-			// jobs to the local parallelism value
-			params.Pool = localPool
-		} else if params.Pool == remotePool {
-			// remotePool is a fake pool used to identify rule that are supported for remoting. If the rule's
-			// pool is the remotePool, replace with nil so that ninja runs it at NINJA_REMOTE_NUM_JOBS
-			// parallelism.
-			params.Pool = nil
-		}
-	}
-
-	rule := m.bp.Rule(pctx.PackageContext, name, params, argNames...)
-
-	if m.config.captureBuild {
-		m.ruleParams[rule] = params
-	}
-
-	return rule
-}
-
-func (m *moduleContext) Build(pctx PackageContext, params BuildParams) {
-	if params.Description != "" {
-		params.Description = "${moduleDesc}" + params.Description + "${moduleDescSuffix}"
-	}
-
-	if missingDeps := m.GetMissingDependencies(); len(missingDeps) > 0 {
-		pctx, params = m.ninjaError(params, fmt.Errorf("module %s missing dependencies: %s\n",
-			m.ModuleName(), strings.Join(missingDeps, ", ")))
-	}
-
-	if m.config.captureBuild {
-		m.buildParams = append(m.buildParams, params)
-	}
-
-	bparams := convertBuildParams(params)
-	err := validateBuildParams(bparams)
-	if err != nil {
-		m.ModuleErrorf(
-			"%s: build parameter validation failed: %s",
-			m.ModuleName(),
-			err.Error())
-	}
-	m.bp.Build(pctx.PackageContext, bparams)
-}
-
-func (m *moduleContext) Phony(name string, deps ...Path) {
-	addPhony(m.config, name, deps...)
-}
-
-func (m *moduleContext) GetMissingDependencies() []string {
-	var missingDeps []string
-	missingDeps = append(missingDeps, m.Module().base().commonProperties.MissingDeps...)
-	missingDeps = append(missingDeps, m.bp.GetMissingDependencies()...)
-	missingDeps = FirstUniqueStrings(missingDeps)
-	return missingDeps
-}
-
-func (b *baseModuleContext) AddMissingDependencies(deps []string) {
-	if deps != nil {
-		missingDeps := &b.Module().base().commonProperties.MissingDeps
-		*missingDeps = append(*missingDeps, deps...)
-		*missingDeps = FirstUniqueStrings(*missingDeps)
-	}
-}
-
-func (b *baseModuleContext) checkedMissingDeps() bool {
-	return b.Module().base().commonProperties.CheckedMissingDeps
-}
-
-func (b *baseModuleContext) getMissingDependencies() []string {
-	checked := &b.Module().base().commonProperties.CheckedMissingDeps
-	*checked = true
-	var missingDeps []string
-	missingDeps = append(missingDeps, b.Module().base().commonProperties.MissingDeps...)
-	missingDeps = append(missingDeps, b.bp.EarlyGetMissingDependencies()...)
-	missingDeps = FirstUniqueStrings(missingDeps)
-	return missingDeps
-}
-
-type AllowDisabledModuleDependency interface {
-	blueprint.DependencyTag
-	AllowDisabledModuleDependency(target Module) bool
-}
-
-func (b *baseModuleContext) validateAndroidModule(module blueprint.Module, tag blueprint.DependencyTag, strict bool) Module {
-	aModule, _ := module.(Module)
-
-	if !strict {
-		return aModule
-	}
-
-	if aModule == nil {
-		b.ModuleErrorf("module %q (%#v) not an android module", b.OtherModuleName(module), tag)
-		return nil
-	}
-
-	if !aModule.Enabled() {
-		if t, ok := tag.(AllowDisabledModuleDependency); !ok || !t.AllowDisabledModuleDependency(aModule) {
-			if b.Config().AllowMissingDependencies() {
-				b.AddMissingDependencies([]string{b.OtherModuleName(aModule)})
-			} else {
-				b.ModuleErrorf("depends on disabled module %q", b.OtherModuleName(aModule))
-			}
-		}
-		return nil
-	}
-	return aModule
-}
-
-type dep struct {
-	mod blueprint.Module
-	tag blueprint.DependencyTag
-}
-
-func (b *baseModuleContext) getDirectDepsInternal(name string, tag blueprint.DependencyTag) []dep {
-	var deps []dep
-	b.VisitDirectDepsBlueprint(func(module blueprint.Module) {
-		if aModule, _ := module.(Module); aModule != nil {
-			if aModule.base().BaseModuleName() == name {
-				returnedTag := b.bp.OtherModuleDependencyTag(aModule)
-				if tag == nil || returnedTag == tag {
-					deps = append(deps, dep{aModule, returnedTag})
-				}
-			}
-		} else if b.bp.OtherModuleName(module) == name {
-			returnedTag := b.bp.OtherModuleDependencyTag(module)
-			if tag == nil || returnedTag == tag {
-				deps = append(deps, dep{module, returnedTag})
-			}
-		}
-	})
-	return deps
-}
-
-func (b *baseModuleContext) getDirectDepInternal(name string, tag blueprint.DependencyTag) (blueprint.Module, blueprint.DependencyTag) {
-	deps := b.getDirectDepsInternal(name, tag)
-	if len(deps) == 1 {
-		return deps[0].mod, deps[0].tag
-	} else if len(deps) >= 2 {
-		panic(fmt.Errorf("Multiple dependencies having same BaseModuleName() %q found from %q",
-			name, b.ModuleName()))
-	} else {
-		return nil, nil
-	}
-}
-
-func (b *baseModuleContext) getDirectDepFirstTag(name string) (blueprint.Module, blueprint.DependencyTag) {
-	foundDeps := b.getDirectDepsInternal(name, nil)
-	deps := map[blueprint.Module]bool{}
-	for _, dep := range foundDeps {
-		deps[dep.mod] = true
-	}
-	if len(deps) == 1 {
-		return foundDeps[0].mod, foundDeps[0].tag
-	} else if len(deps) >= 2 {
-		// this could happen if two dependencies have the same name in different namespaces
-		// TODO(b/186554727): this should not occur if namespaces are handled within
-		// getDirectDepsInternal.
-		panic(fmt.Errorf("Multiple dependencies having same BaseModuleName() %q found from %q",
-			name, b.ModuleName()))
-	} else {
-		return nil, nil
-	}
-}
-
-func (b *baseModuleContext) GetDirectDepsWithTag(tag blueprint.DependencyTag) []Module {
-	var deps []Module
-	b.VisitDirectDepsBlueprint(func(module blueprint.Module) {
-		if aModule, _ := module.(Module); aModule != nil {
-			if b.bp.OtherModuleDependencyTag(aModule) == tag {
-				deps = append(deps, aModule)
-			}
-		}
-	})
-	return deps
-}
-
-func (m *moduleContext) GetDirectDepWithTag(name string, tag blueprint.DependencyTag) blueprint.Module {
-	module, _ := m.getDirectDepInternal(name, tag)
-	return module
-}
-
-// GetDirectDep returns the Module and DependencyTag for the direct dependency with the specified
-// name, or nil if none exists. If there are multiple dependencies on the same module it returns the
-// first DependencyTag.
-func (b *baseModuleContext) GetDirectDep(name string) (blueprint.Module, blueprint.DependencyTag) {
-	return b.getDirectDepFirstTag(name)
-}
-
-func (b *baseModuleContext) ModuleFromName(name string) (blueprint.Module, bool) {
-	if !b.isBazelConversionMode() {
-		panic("cannot call ModuleFromName if not in bazel conversion mode")
-	}
-	var m blueprint.Module
-	var ok bool
-	if moduleName, _ := SrcIsModuleWithTag(name); moduleName != "" {
-		m, ok = b.bp.ModuleFromName(moduleName)
-	} else {
-		m, ok = b.bp.ModuleFromName(name)
-	}
-	if !ok {
-		return m, ok
-	}
-	// If this module is not preferred, tried to get the prebuilt version instead
-	if a, aOk := m.(Module); aOk && !IsModulePrebuilt(a) && !IsModulePreferred(a) {
-		return b.ModuleFromName("prebuilt_" + name)
-	}
-	return m, ok
-}
-
-func (b *baseModuleContext) VisitDirectDepsBlueprint(visit func(blueprint.Module)) {
-	b.bp.VisitDirectDeps(visit)
-}
-
-func (b *baseModuleContext) VisitDirectDeps(visit func(Module)) {
-	b.bp.VisitDirectDeps(func(module blueprint.Module) {
-		if aModule := b.validateAndroidModule(module, b.bp.OtherModuleDependencyTag(module), b.strictVisitDeps); aModule != nil {
-			visit(aModule)
-		}
-	})
-}
-
-func (b *baseModuleContext) VisitDirectDepsWithTag(tag blueprint.DependencyTag, visit func(Module)) {
-	b.bp.VisitDirectDeps(func(module blueprint.Module) {
-		if b.bp.OtherModuleDependencyTag(module) == tag {
-			if aModule := b.validateAndroidModule(module, b.bp.OtherModuleDependencyTag(module), b.strictVisitDeps); aModule != nil {
-				visit(aModule)
-			}
-		}
-	})
-}
-
-func (b *baseModuleContext) VisitDirectDepsIf(pred func(Module) bool, visit func(Module)) {
-	b.bp.VisitDirectDepsIf(
-		// pred
-		func(module blueprint.Module) bool {
-			if aModule := b.validateAndroidModule(module, b.bp.OtherModuleDependencyTag(module), b.strictVisitDeps); aModule != nil {
-				return pred(aModule)
-			} else {
-				return false
-			}
-		},
-		// visit
-		func(module blueprint.Module) {
-			visit(module.(Module))
-		})
-}
-
-func (b *baseModuleContext) VisitDepsDepthFirst(visit func(Module)) {
-	b.bp.VisitDepsDepthFirst(func(module blueprint.Module) {
-		if aModule := b.validateAndroidModule(module, b.bp.OtherModuleDependencyTag(module), b.strictVisitDeps); aModule != nil {
-			visit(aModule)
-		}
-	})
-}
-
-func (b *baseModuleContext) VisitDepsDepthFirstIf(pred func(Module) bool, visit func(Module)) {
-	b.bp.VisitDepsDepthFirstIf(
-		// pred
-		func(module blueprint.Module) bool {
-			if aModule := b.validateAndroidModule(module, b.bp.OtherModuleDependencyTag(module), b.strictVisitDeps); aModule != nil {
-				return pred(aModule)
-			} else {
-				return false
-			}
-		},
-		// visit
-		func(module blueprint.Module) {
-			visit(module.(Module))
-		})
-}
-
-func (b *baseModuleContext) WalkDepsBlueprint(visit func(blueprint.Module, blueprint.Module) bool) {
-	b.bp.WalkDeps(visit)
-}
-
-func (b *baseModuleContext) WalkDeps(visit func(Module, Module) bool) {
-	b.walkPath = []Module{b.Module()}
-	b.tagPath = []blueprint.DependencyTag{}
-	b.bp.WalkDeps(func(child, parent blueprint.Module) bool {
-		childAndroidModule, _ := child.(Module)
-		parentAndroidModule, _ := parent.(Module)
-		if childAndroidModule != nil && parentAndroidModule != nil {
-			// record walkPath before visit
-			for b.walkPath[len(b.walkPath)-1] != parentAndroidModule {
-				b.walkPath = b.walkPath[0 : len(b.walkPath)-1]
-				b.tagPath = b.tagPath[0 : len(b.tagPath)-1]
-			}
-			b.walkPath = append(b.walkPath, childAndroidModule)
-			b.tagPath = append(b.tagPath, b.OtherModuleDependencyTag(childAndroidModule))
-			return visit(childAndroidModule, parentAndroidModule)
-		} else {
-			return false
-		}
-	})
-}
-
-func (b *baseModuleContext) GetWalkPath() []Module {
-	return b.walkPath
-}
-
-func (b *baseModuleContext) GetTagPath() []blueprint.DependencyTag {
-	return b.tagPath
-}
-
-func (b *baseModuleContext) VisitAllModuleVariants(visit func(Module)) {
-	b.bp.VisitAllModuleVariants(func(module blueprint.Module) {
-		visit(module.(Module))
-	})
-}
-
-func (b *baseModuleContext) PrimaryModule() Module {
-	return b.bp.PrimaryModule().(Module)
-}
-
-func (b *baseModuleContext) FinalModule() Module {
-	return b.bp.FinalModule().(Module)
-}
-
-// IsMetaDependencyTag returns true for cross-cutting metadata dependencies.
-func IsMetaDependencyTag(tag blueprint.DependencyTag) bool {
-	if tag == licenseKindTag {
-		return true
-	} else if tag == licensesTag {
-		return true
-	}
-	return false
-}
-
-// A regexp for removing boilerplate from BaseDependencyTag from the string representation of
-// a dependency tag.
-var tagCleaner = regexp.MustCompile(`\QBaseDependencyTag:{}\E(, )?`)
-
-// PrettyPrintTag returns string representation of the tag, but prefers
-// custom String() method if available.
-func PrettyPrintTag(tag blueprint.DependencyTag) string {
-	// Use tag's custom String() method if available.
-	if stringer, ok := tag.(fmt.Stringer); ok {
-		return stringer.String()
-	}
-
-	// Otherwise, get a default string representation of the tag's struct.
-	tagString := fmt.Sprintf("%T: %+v", tag, tag)
-
-	// Remove the boilerplate from BaseDependencyTag as it adds no value.
-	tagString = tagCleaner.ReplaceAllString(tagString, "")
-	return tagString
-}
-
-func (b *baseModuleContext) GetPathString(skipFirst bool) string {
-	sb := strings.Builder{}
-	tagPath := b.GetTagPath()
-	walkPath := b.GetWalkPath()
-	if !skipFirst {
-		sb.WriteString(walkPath[0].String())
-	}
-	for i, m := range walkPath[1:] {
-		sb.WriteString("\n")
-		sb.WriteString(fmt.Sprintf("           via tag %s\n", PrettyPrintTag(tagPath[i])))
-		sb.WriteString(fmt.Sprintf("    -> %s", m.String()))
-	}
-	return sb.String()
-}
-
-func (m *moduleContext) ModuleSubDir() string {
-	return m.bp.ModuleSubDir()
-}
-
-func (m *moduleContext) SoongConfigTraceHash() string {
-	return m.module.base().commonProperties.SoongConfigTraceHash
-}
-
-func (b *baseModuleContext) Target() Target {
-	return b.target
-}
-
-func (b *baseModuleContext) TargetPrimary() bool {
-	return b.targetPrimary
-}
-
-func (b *baseModuleContext) MultiTargets() []Target {
-	return b.multiTargets
-}
-
-func (b *baseModuleContext) Arch() Arch {
-	return b.target.Arch
-}
-
-func (b *baseModuleContext) Os() OsType {
-	return b.os
-}
-
-func (b *baseModuleContext) Host() bool {
-	return b.os.Class == Host
-}
-
-func (b *baseModuleContext) Device() bool {
-	return b.os.Class == Device
-}
-
-func (b *baseModuleContext) Darwin() bool {
-	return b.os == Darwin
-}
-
-func (b *baseModuleContext) Windows() bool {
-	return b.os == Windows
-}
-
-func (b *baseModuleContext) PrimaryArch() bool {
-	if len(b.config.Targets[b.target.Os]) <= 1 {
-		return true
-	}
-	return b.target.Arch.ArchType == b.config.Targets[b.target.Os][0].Arch.ArchType
-}
-
 // Makes this module a platform module, i.e. not specific to soc, device,
 // product, or system_ext.
 func (m *ModuleBase) MakeAsPlatform() {
@@ -3344,274 +2191,6 @@
 	return proptools.Bool(m.commonProperties.Native_bridge_supported)
 }
 
-func (m *moduleContext) InstallInData() bool {
-	return m.module.InstallInData()
-}
-
-func (m *moduleContext) InstallInTestcases() bool {
-	return m.module.InstallInTestcases()
-}
-
-func (m *moduleContext) InstallInSanitizerDir() bool {
-	return m.module.InstallInSanitizerDir()
-}
-
-func (m *moduleContext) InstallInRamdisk() bool {
-	return m.module.InstallInRamdisk()
-}
-
-func (m *moduleContext) InstallInVendorRamdisk() bool {
-	return m.module.InstallInVendorRamdisk()
-}
-
-func (m *moduleContext) InstallInDebugRamdisk() bool {
-	return m.module.InstallInDebugRamdisk()
-}
-
-func (m *moduleContext) InstallInRecovery() bool {
-	return m.module.InstallInRecovery()
-}
-
-func (m *moduleContext) InstallInRoot() bool {
-	return m.module.InstallInRoot()
-}
-
-func (m *moduleContext) InstallForceOS() (*OsType, *ArchType) {
-	return m.module.InstallForceOS()
-}
-
-func (m *moduleContext) InstallInVendor() bool {
-	return m.module.InstallInVendor()
-}
-
-func (m *moduleContext) skipInstall() bool {
-	if m.module.base().commonProperties.SkipInstall {
-		return true
-	}
-
-	if m.module.base().commonProperties.HideFromMake {
-		return true
-	}
-
-	// We'll need a solution for choosing which of modules with the same name in different
-	// namespaces to install.  For now, reuse the list of namespaces exported to Make as the
-	// list of namespaces to install in a Soong-only build.
-	if !m.module.base().commonProperties.NamespaceExportedToMake {
-		return true
-	}
-
-	return false
-}
-
-func (m *moduleContext) InstallFile(installPath InstallPath, name string, srcPath Path,
-	deps ...Path) InstallPath {
-	return m.installFile(installPath, name, srcPath, deps, false, nil)
-}
-
-func (m *moduleContext) InstallExecutable(installPath InstallPath, name string, srcPath Path,
-	deps ...Path) InstallPath {
-	return m.installFile(installPath, name, srcPath, deps, true, nil)
-}
-
-func (m *moduleContext) InstallFileWithExtraFilesZip(installPath InstallPath, name string, srcPath Path,
-	extraZip Path, deps ...Path) InstallPath {
-	return m.installFile(installPath, name, srcPath, deps, false, &extraFilesZip{
-		zip: extraZip,
-		dir: installPath,
-	})
-}
-
-func (m *moduleContext) PackageFile(installPath InstallPath, name string, srcPath Path) PackagingSpec {
-	fullInstallPath := installPath.Join(m, name)
-	return m.packageFile(fullInstallPath, srcPath, false)
-}
-
-func (m *moduleContext) packageFile(fullInstallPath InstallPath, srcPath Path, executable bool) PackagingSpec {
-	licenseFiles := m.Module().EffectiveLicenseFiles()
-	spec := PackagingSpec{
-		relPathInPackage:      Rel(m, fullInstallPath.PartitionDir(), fullInstallPath.String()),
-		srcPath:               srcPath,
-		symlinkTarget:         "",
-		executable:            executable,
-		effectiveLicenseFiles: &licenseFiles,
-		partition:             fullInstallPath.partition,
-	}
-	m.packagingSpecs = append(m.packagingSpecs, spec)
-	return spec
-}
-
-func (m *moduleContext) installFile(installPath InstallPath, name string, srcPath Path, deps []Path,
-	executable bool, extraZip *extraFilesZip) InstallPath {
-
-	fullInstallPath := installPath.Join(m, name)
-	m.module.base().hooks.runInstallHooks(m, srcPath, fullInstallPath, false)
-
-	if !m.skipInstall() {
-		deps = append(deps, InstallPaths(m.module.base().installFilesDepSet.ToList()).Paths()...)
-
-		var implicitDeps, orderOnlyDeps Paths
-
-		if m.Host() {
-			// Installed host modules might be used during the build, depend directly on their
-			// dependencies so their timestamp is updated whenever their dependency is updated
-			implicitDeps = deps
-		} else {
-			orderOnlyDeps = deps
-		}
-
-		if m.Config().KatiEnabled() {
-			// When creating the install rule in Soong but embedding in Make, write the rule to a
-			// makefile instead of directly to the ninja file so that main.mk can add the
-			// dependencies from the `required` property that are hard to resolve in Soong.
-			m.katiInstalls = append(m.katiInstalls, katiInstall{
-				from:          srcPath,
-				to:            fullInstallPath,
-				implicitDeps:  implicitDeps,
-				orderOnlyDeps: orderOnlyDeps,
-				executable:    executable,
-				extraFiles:    extraZip,
-			})
-		} else {
-			rule := Cp
-			if executable {
-				rule = CpExecutable
-			}
-
-			extraCmds := ""
-			if extraZip != nil {
-				extraCmds += fmt.Sprintf(" && ( unzip -qDD -d '%s' '%s' 2>&1 | grep -v \"zipfile is empty\"; exit $${PIPESTATUS[0]} )",
-					extraZip.dir.String(), extraZip.zip.String())
-				extraCmds += " || ( code=$$?; if [ $$code -ne 0 -a $$code -ne 1 ]; then exit $$code; fi )"
-				implicitDeps = append(implicitDeps, extraZip.zip)
-			}
-
-			m.Build(pctx, BuildParams{
-				Rule:        rule,
-				Description: "install " + fullInstallPath.Base(),
-				Output:      fullInstallPath,
-				Input:       srcPath,
-				Implicits:   implicitDeps,
-				OrderOnly:   orderOnlyDeps,
-				Default:     !m.Config().KatiEnabled(),
-				Args: map[string]string{
-					"extraCmds": extraCmds,
-				},
-			})
-		}
-
-		m.installFiles = append(m.installFiles, fullInstallPath)
-	}
-
-	m.packageFile(fullInstallPath, srcPath, executable)
-
-	m.checkbuildFiles = append(m.checkbuildFiles, srcPath)
-
-	return fullInstallPath
-}
-
-func (m *moduleContext) InstallSymlink(installPath InstallPath, name string, srcPath InstallPath) InstallPath {
-	fullInstallPath := installPath.Join(m, name)
-	m.module.base().hooks.runInstallHooks(m, srcPath, fullInstallPath, true)
-
-	relPath, err := filepath.Rel(path.Dir(fullInstallPath.String()), srcPath.String())
-	if err != nil {
-		panic(fmt.Sprintf("Unable to generate symlink between %q and %q: %s", fullInstallPath.Base(), srcPath.Base(), err))
-	}
-	if !m.skipInstall() {
-
-		if m.Config().KatiEnabled() {
-			// When creating the symlink rule in Soong but embedding in Make, write the rule to a
-			// makefile instead of directly to the ninja file so that main.mk can add the
-			// dependencies from the `required` property that are hard to resolve in Soong.
-			m.katiSymlinks = append(m.katiSymlinks, katiInstall{
-				from: srcPath,
-				to:   fullInstallPath,
-			})
-		} else {
-			// The symlink doesn't need updating when the target is modified, but we sometimes
-			// have a dependency on a symlink to a binary instead of to the binary directly, and
-			// the mtime of the symlink must be updated when the binary is modified, so use a
-			// normal dependency here instead of an order-only dependency.
-			m.Build(pctx, BuildParams{
-				Rule:        Symlink,
-				Description: "install symlink " + fullInstallPath.Base(),
-				Output:      fullInstallPath,
-				Input:       srcPath,
-				Default:     !m.Config().KatiEnabled(),
-				Args: map[string]string{
-					"fromPath": relPath,
-				},
-			})
-		}
-
-		m.installFiles = append(m.installFiles, fullInstallPath)
-		m.checkbuildFiles = append(m.checkbuildFiles, srcPath)
-	}
-
-	m.packagingSpecs = append(m.packagingSpecs, PackagingSpec{
-		relPathInPackage: Rel(m, fullInstallPath.PartitionDir(), fullInstallPath.String()),
-		srcPath:          nil,
-		symlinkTarget:    relPath,
-		executable:       false,
-		partition:        fullInstallPath.partition,
-	})
-
-	return fullInstallPath
-}
-
-// installPath/name -> absPath where absPath might be a path that is available only at runtime
-// (e.g. /apex/...)
-func (m *moduleContext) InstallAbsoluteSymlink(installPath InstallPath, name string, absPath string) InstallPath {
-	fullInstallPath := installPath.Join(m, name)
-	m.module.base().hooks.runInstallHooks(m, nil, fullInstallPath, true)
-
-	if !m.skipInstall() {
-		if m.Config().KatiEnabled() {
-			// When creating the symlink rule in Soong but embedding in Make, write the rule to a
-			// makefile instead of directly to the ninja file so that main.mk can add the
-			// dependencies from the `required` property that are hard to resolve in Soong.
-			m.katiSymlinks = append(m.katiSymlinks, katiInstall{
-				absFrom: absPath,
-				to:      fullInstallPath,
-			})
-		} else {
-			m.Build(pctx, BuildParams{
-				Rule:        Symlink,
-				Description: "install symlink " + fullInstallPath.Base() + " -> " + absPath,
-				Output:      fullInstallPath,
-				Default:     !m.Config().KatiEnabled(),
-				Args: map[string]string{
-					"fromPath": absPath,
-				},
-			})
-		}
-
-		m.installFiles = append(m.installFiles, fullInstallPath)
-	}
-
-	m.packagingSpecs = append(m.packagingSpecs, PackagingSpec{
-		relPathInPackage: Rel(m, fullInstallPath.PartitionDir(), fullInstallPath.String()),
-		srcPath:          nil,
-		symlinkTarget:    absPath,
-		executable:       false,
-		partition:        fullInstallPath.partition,
-	})
-
-	return fullInstallPath
-}
-
-func (m *moduleContext) CheckbuildFile(srcPath Path) {
-	m.checkbuildFiles = append(m.checkbuildFiles, srcPath)
-}
-
-func (m *moduleContext) blueprintModuleContext() blueprint.ModuleContext {
-	return m.bp
-}
-
-func (m *moduleContext) LicenseMetadataFile() Path {
-	return m.module.base().licenseMetadataFile
-}
-
 // SrcIsModule decodes module references in the format ":unqualified-name" or "//namespace:name"
 // into the module name, or empty string if the input was not a module reference.
 func SrcIsModule(s string) (module string) {
@@ -3818,44 +2397,6 @@
 	HostToolPath() OptionalPath
 }
 
-// Returns a list of paths expanded from globs and modules referenced using ":module" syntax.  The property must
-// be tagged with `android:"path" to support automatic source module dependency resolution.
-//
-// Deprecated: use PathsForModuleSrc or PathsForModuleSrcExcludes instead.
-func (m *moduleContext) ExpandSources(srcFiles, excludes []string) Paths {
-	return PathsForModuleSrcExcludes(m, srcFiles, excludes)
-}
-
-// Returns a single path expanded from globs and modules referenced using ":module" syntax.  The property must
-// be tagged with `android:"path" to support automatic source module dependency resolution.
-//
-// Deprecated: use PathForModuleSrc instead.
-func (m *moduleContext) ExpandSource(srcFile, _ string) Path {
-	return PathForModuleSrc(m, srcFile)
-}
-
-// Returns an optional single path expanded from globs and modules referenced using ":module" syntax if
-// the srcFile is non-nil.  The property must be tagged with `android:"path" to support automatic source module
-// dependency resolution.
-func (m *moduleContext) ExpandOptionalSource(srcFile *string, _ string) OptionalPath {
-	if srcFile != nil {
-		return OptionalPathForPath(PathForModuleSrc(m, *srcFile))
-	}
-	return OptionalPath{}
-}
-
-func (m *moduleContext) RequiredModuleNames() []string {
-	return m.module.RequiredModuleNames()
-}
-
-func (m *moduleContext) HostRequiredModuleNames() []string {
-	return m.module.HostRequiredModuleNames()
-}
-
-func (m *moduleContext) TargetRequiredModuleNames() []string {
-	return m.module.TargetRequiredModuleNames()
-}
-
 func init() {
 	RegisterParallelSingletonType("buildtarget", BuildTargetSingleton)
 	RegisterParallelSingletonType("soongconfigtrace", soongConfigTraceSingletonFunc)
diff --git a/android/module_context.go b/android/module_context.go
new file mode 100644
index 0000000..a0a4104
--- /dev/null
+++ b/android/module_context.go
@@ -0,0 +1,698 @@
+// Copyright 2015 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package android
+
+import (
+	"fmt"
+	"github.com/google/blueprint"
+	"github.com/google/blueprint/proptools"
+	"path"
+	"path/filepath"
+	"strings"
+)
+
+// BuildParameters describes the set of potential parameters to build a Ninja rule.
+// In general, these correspond to a Ninja concept.
+type BuildParams struct {
+	// A Ninja Rule that will be written to the Ninja file. This allows factoring out common code
+	// among multiple modules to reduce repetition in the Ninja file of action requirements. A rule
+	// can contain variables that should be provided in Args.
+	Rule blueprint.Rule
+	// Deps represents the depfile format. When using RuleBuilder, this defaults to GCC when depfiles
+	// are used.
+	Deps blueprint.Deps
+	// Depfile is a writeable path that allows correct incremental builds when the inputs have not
+	// been fully specified by the Ninja rule. Ninja supports a subset of the Makefile depfile syntax.
+	Depfile WritablePath
+	// A description of the build action.
+	Description string
+	// Output is an output file of the action. When using this field, references to $out in the Ninja
+	// command will refer to this file.
+	Output WritablePath
+	// Outputs is a slice of output file of the action. When using this field, references to $out in
+	// the Ninja command will refer to these files.
+	Outputs WritablePaths
+	// SymlinkOutput is an output file specifically that is a symlink.
+	SymlinkOutput WritablePath
+	// SymlinkOutputs is a slice of output files specifically that is a symlink.
+	SymlinkOutputs WritablePaths
+	// ImplicitOutput is an output file generated by the action. Note: references to `$out` in the
+	// Ninja command will NOT include references to this file.
+	ImplicitOutput WritablePath
+	// ImplicitOutputs is a slice of output files generated by the action. Note: references to `$out`
+	// in the Ninja command will NOT include references to these files.
+	ImplicitOutputs WritablePaths
+	// Input is an input file to the Ninja action. When using this field, references to $in in the
+	// Ninja command will refer to this file.
+	Input Path
+	// Inputs is a slice of input files to the Ninja action. When using this field, references to $in
+	// in the Ninja command will refer to these files.
+	Inputs Paths
+	// Implicit is an input file to the Ninja action. Note: references to `$in` in the Ninja command
+	// will NOT include references to this file.
+	Implicit Path
+	// Implicits is a slice of input files to the Ninja action. Note: references to `$in` in the Ninja
+	// command will NOT include references to these files.
+	Implicits Paths
+	// OrderOnly are Ninja order-only inputs to the action. When these are out of date, the output is
+	// not rebuilt until they are built, but changes in order-only dependencies alone do not cause the
+	// output to be rebuilt.
+	OrderOnly Paths
+	// Validation is an output path for a validation action. Validation outputs imply lower
+	// non-blocking priority to building non-validation outputs.
+	Validation Path
+	// Validations is a slice of output path for a validation action. Validation outputs imply lower
+	// non-blocking priority to building non-validation outputs.
+	Validations Paths
+	// Whether to skip outputting a default target statement which will be built by Ninja when no
+	// targets are specified on Ninja's command line.
+	Default bool
+	// Args is a key value mapping for replacements of variables within the Rule
+	Args map[string]string
+}
+
+type ModuleBuildParams BuildParams
+
+type ModuleContext interface {
+	BaseModuleContext
+
+	blueprintModuleContext() blueprint.ModuleContext
+
+	// Deprecated: use ModuleContext.Build instead.
+	ModuleBuild(pctx PackageContext, params ModuleBuildParams)
+
+	// Returns a list of paths expanded from globs and modules referenced using ":module" syntax.  The property must
+	// be tagged with `android:"path" to support automatic source module dependency resolution.
+	//
+	// Deprecated: use PathsForModuleSrc or PathsForModuleSrcExcludes instead.
+	ExpandSources(srcFiles, excludes []string) Paths
+
+	// Returns a single path expanded from globs and modules referenced using ":module" syntax.  The property must
+	// be tagged with `android:"path" to support automatic source module dependency resolution.
+	//
+	// Deprecated: use PathForModuleSrc instead.
+	ExpandSource(srcFile, prop string) Path
+
+	ExpandOptionalSource(srcFile *string, prop string) OptionalPath
+
+	// InstallExecutable creates a rule to copy srcPath to name in the installPath directory,
+	// with the given additional dependencies.  The file is marked executable after copying.
+	//
+	// The installed file will be returned by FilesToInstall(), and the PackagingSpec for the
+	// installed file will be returned by PackagingSpecs() on this module or by
+	// TransitivePackagingSpecs() on modules that depend on this module through dependency tags
+	// for which IsInstallDepNeeded returns true.
+	InstallExecutable(installPath InstallPath, name string, srcPath Path, deps ...InstallPath) InstallPath
+
+	// InstallFile creates a rule to copy srcPath to name in the installPath directory,
+	// with the given additional dependencies.
+	//
+	// The installed file will be returned by FilesToInstall(), and the PackagingSpec for the
+	// installed file will be returned by PackagingSpecs() on this module or by
+	// TransitivePackagingSpecs() on modules that depend on this module through dependency tags
+	// for which IsInstallDepNeeded returns true.
+	InstallFile(installPath InstallPath, name string, srcPath Path, deps ...InstallPath) InstallPath
+
+	// InstallFileWithExtraFilesZip creates a rule to copy srcPath to name in the installPath
+	// directory, and also unzip a zip file containing extra files to install into the same
+	// directory.
+	//
+	// The installed file will be returned by FilesToInstall(), and the PackagingSpec for the
+	// installed file will be returned by PackagingSpecs() on this module or by
+	// TransitivePackagingSpecs() on modules that depend on this module through dependency tags
+	// for which IsInstallDepNeeded returns true.
+	InstallFileWithExtraFilesZip(installPath InstallPath, name string, srcPath Path, extraZip Path, deps ...InstallPath) InstallPath
+
+	// InstallSymlink creates a rule to create a symlink from src srcPath to name in the installPath
+	// directory.
+	//
+	// The installed symlink will be returned by FilesToInstall(), and the PackagingSpec for the
+	// installed file will be returned by PackagingSpecs() on this module or by
+	// TransitivePackagingSpecs() on modules that depend on this module through dependency tags
+	// for which IsInstallDepNeeded returns true.
+	InstallSymlink(installPath InstallPath, name string, srcPath InstallPath) InstallPath
+
+	// InstallAbsoluteSymlink creates a rule to create an absolute symlink from src srcPath to name
+	// in the installPath directory.
+	//
+	// The installed symlink will be returned by FilesToInstall(), and the PackagingSpec for the
+	// installed file will be returned by PackagingSpecs() on this module or by
+	// TransitivePackagingSpecs() on modules that depend on this module through dependency tags
+	// for which IsInstallDepNeeded returns true.
+	InstallAbsoluteSymlink(installPath InstallPath, name string, absPath string) InstallPath
+
+	// PackageFile creates a PackagingSpec as if InstallFile was called, but without creating
+	// the rule to copy the file.  This is useful to define how a module would be packaged
+	// without installing it into the global installation directories.
+	//
+	// The created PackagingSpec for the will be returned by PackagingSpecs() on this module or by
+	// TransitivePackagingSpecs() on modules that depend on this module through dependency tags
+	// for which IsInstallDepNeeded returns true.
+	PackageFile(installPath InstallPath, name string, srcPath Path) PackagingSpec
+
+	CheckbuildFile(srcPath Path)
+
+	InstallInData() bool
+	InstallInTestcases() bool
+	InstallInSanitizerDir() bool
+	InstallInRamdisk() bool
+	InstallInVendorRamdisk() bool
+	InstallInDebugRamdisk() bool
+	InstallInRecovery() bool
+	InstallInRoot() bool
+	InstallInVendor() bool
+	InstallForceOS() (*OsType, *ArchType)
+
+	RequiredModuleNames() []string
+	HostRequiredModuleNames() []string
+	TargetRequiredModuleNames() []string
+
+	ModuleSubDir() string
+	SoongConfigTraceHash() string
+
+	Variable(pctx PackageContext, name, value string)
+	Rule(pctx PackageContext, name string, params blueprint.RuleParams, argNames ...string) blueprint.Rule
+	// Similar to blueprint.ModuleContext.Build, but takes Paths instead of []string,
+	// and performs more verification.
+	Build(pctx PackageContext, params BuildParams)
+	// Phony creates a Make-style phony rule, a rule with no commands that can depend on other
+	// phony rules or real files.  Phony can be called on the same name multiple times to add
+	// additional dependencies.
+	Phony(phony string, deps ...Path)
+
+	// GetMissingDependencies returns the list of dependencies that were passed to AddDependencies or related methods,
+	// but do not exist.
+	GetMissingDependencies() []string
+
+	// LicenseMetadataFile returns the path where the license metadata for this module will be
+	// generated.
+	LicenseMetadataFile() Path
+}
+
+type moduleContext struct {
+	bp blueprint.ModuleContext
+	baseModuleContext
+	packagingSpecs  []PackagingSpec
+	installFiles    InstallPaths
+	checkbuildFiles Paths
+	module          Module
+	phonies         map[string]Paths
+
+	katiInstalls []katiInstall
+	katiSymlinks []katiInstall
+
+	// For tests
+	buildParams []BuildParams
+	ruleParams  map[blueprint.Rule]blueprint.RuleParams
+	variables   map[string]string
+}
+
+func (m *moduleContext) ninjaError(params BuildParams, err error) (PackageContext, BuildParams) {
+	return pctx, BuildParams{
+		Rule:            ErrorRule,
+		Description:     params.Description,
+		Output:          params.Output,
+		Outputs:         params.Outputs,
+		ImplicitOutput:  params.ImplicitOutput,
+		ImplicitOutputs: params.ImplicitOutputs,
+		Args: map[string]string{
+			"error": err.Error(),
+		},
+	}
+}
+
+func (m *moduleContext) ModuleBuild(pctx PackageContext, params ModuleBuildParams) {
+	m.Build(pctx, BuildParams(params))
+}
+
+func validateBuildParams(params blueprint.BuildParams) error {
+	// Validate that the symlink outputs are declared outputs or implicit outputs
+	allOutputs := map[string]bool{}
+	for _, output := range params.Outputs {
+		allOutputs[output] = true
+	}
+	for _, output := range params.ImplicitOutputs {
+		allOutputs[output] = true
+	}
+	for _, symlinkOutput := range params.SymlinkOutputs {
+		if !allOutputs[symlinkOutput] {
+			return fmt.Errorf(
+				"Symlink output %s is not a declared output or implicit output",
+				symlinkOutput)
+		}
+	}
+	return nil
+}
+
+// Convert build parameters from their concrete Android types into their string representations,
+// and combine the singular and plural fields of the same type (e.g. Output and Outputs).
+func convertBuildParams(params BuildParams) blueprint.BuildParams {
+	bparams := blueprint.BuildParams{
+		Rule:            params.Rule,
+		Description:     params.Description,
+		Deps:            params.Deps,
+		Outputs:         params.Outputs.Strings(),
+		ImplicitOutputs: params.ImplicitOutputs.Strings(),
+		SymlinkOutputs:  params.SymlinkOutputs.Strings(),
+		Inputs:          params.Inputs.Strings(),
+		Implicits:       params.Implicits.Strings(),
+		OrderOnly:       params.OrderOnly.Strings(),
+		Validations:     params.Validations.Strings(),
+		Args:            params.Args,
+		Optional:        !params.Default,
+	}
+
+	if params.Depfile != nil {
+		bparams.Depfile = params.Depfile.String()
+	}
+	if params.Output != nil {
+		bparams.Outputs = append(bparams.Outputs, params.Output.String())
+	}
+	if params.SymlinkOutput != nil {
+		bparams.SymlinkOutputs = append(bparams.SymlinkOutputs, params.SymlinkOutput.String())
+	}
+	if params.ImplicitOutput != nil {
+		bparams.ImplicitOutputs = append(bparams.ImplicitOutputs, params.ImplicitOutput.String())
+	}
+	if params.Input != nil {
+		bparams.Inputs = append(bparams.Inputs, params.Input.String())
+	}
+	if params.Implicit != nil {
+		bparams.Implicits = append(bparams.Implicits, params.Implicit.String())
+	}
+	if params.Validation != nil {
+		bparams.Validations = append(bparams.Validations, params.Validation.String())
+	}
+
+	bparams.Outputs = proptools.NinjaEscapeList(bparams.Outputs)
+	bparams.ImplicitOutputs = proptools.NinjaEscapeList(bparams.ImplicitOutputs)
+	bparams.SymlinkOutputs = proptools.NinjaEscapeList(bparams.SymlinkOutputs)
+	bparams.Inputs = proptools.NinjaEscapeList(bparams.Inputs)
+	bparams.Implicits = proptools.NinjaEscapeList(bparams.Implicits)
+	bparams.OrderOnly = proptools.NinjaEscapeList(bparams.OrderOnly)
+	bparams.Validations = proptools.NinjaEscapeList(bparams.Validations)
+	bparams.Depfile = proptools.NinjaEscape(bparams.Depfile)
+
+	return bparams
+}
+
+func (m *moduleContext) Variable(pctx PackageContext, name, value string) {
+	if m.config.captureBuild {
+		m.variables[name] = value
+	}
+
+	m.bp.Variable(pctx.PackageContext, name, value)
+}
+
+func (m *moduleContext) Rule(pctx PackageContext, name string, params blueprint.RuleParams,
+	argNames ...string) blueprint.Rule {
+
+	if m.config.UseRemoteBuild() {
+		if params.Pool == nil {
+			// When USE_GOMA=true or USE_RBE=true are set and the rule is not supported by goma/RBE, restrict
+			// jobs to the local parallelism value
+			params.Pool = localPool
+		} else if params.Pool == remotePool {
+			// remotePool is a fake pool used to identify rule that are supported for remoting. If the rule's
+			// pool is the remotePool, replace with nil so that ninja runs it at NINJA_REMOTE_NUM_JOBS
+			// parallelism.
+			params.Pool = nil
+		}
+	}
+
+	rule := m.bp.Rule(pctx.PackageContext, name, params, argNames...)
+
+	if m.config.captureBuild {
+		m.ruleParams[rule] = params
+	}
+
+	return rule
+}
+
+func (m *moduleContext) Build(pctx PackageContext, params BuildParams) {
+	if params.Description != "" {
+		params.Description = "${moduleDesc}" + params.Description + "${moduleDescSuffix}"
+	}
+
+	if missingDeps := m.GetMissingDependencies(); len(missingDeps) > 0 {
+		pctx, params = m.ninjaError(params, fmt.Errorf("module %s missing dependencies: %s\n",
+			m.ModuleName(), strings.Join(missingDeps, ", ")))
+	}
+
+	if m.config.captureBuild {
+		m.buildParams = append(m.buildParams, params)
+	}
+
+	bparams := convertBuildParams(params)
+	err := validateBuildParams(bparams)
+	if err != nil {
+		m.ModuleErrorf(
+			"%s: build parameter validation failed: %s",
+			m.ModuleName(),
+			err.Error())
+	}
+	m.bp.Build(pctx.PackageContext, bparams)
+}
+
+func (m *moduleContext) Phony(name string, deps ...Path) {
+	addPhony(m.config, name, deps...)
+}
+
+func (m *moduleContext) GetMissingDependencies() []string {
+	var missingDeps []string
+	missingDeps = append(missingDeps, m.Module().base().commonProperties.MissingDeps...)
+	missingDeps = append(missingDeps, m.bp.GetMissingDependencies()...)
+	missingDeps = FirstUniqueStrings(missingDeps)
+	return missingDeps
+}
+
+func (m *moduleContext) GetDirectDepWithTag(name string, tag blueprint.DependencyTag) blueprint.Module {
+	module, _ := m.getDirectDepInternal(name, tag)
+	return module
+}
+
+func (m *moduleContext) ModuleSubDir() string {
+	return m.bp.ModuleSubDir()
+}
+
+func (m *moduleContext) SoongConfigTraceHash() string {
+	return m.module.base().commonProperties.SoongConfigTraceHash
+}
+
+func (m *moduleContext) InstallInData() bool {
+	return m.module.InstallInData()
+}
+
+func (m *moduleContext) InstallInTestcases() bool {
+	return m.module.InstallInTestcases()
+}
+
+func (m *moduleContext) InstallInSanitizerDir() bool {
+	return m.module.InstallInSanitizerDir()
+}
+
+func (m *moduleContext) InstallInRamdisk() bool {
+	return m.module.InstallInRamdisk()
+}
+
+func (m *moduleContext) InstallInVendorRamdisk() bool {
+	return m.module.InstallInVendorRamdisk()
+}
+
+func (m *moduleContext) InstallInDebugRamdisk() bool {
+	return m.module.InstallInDebugRamdisk()
+}
+
+func (m *moduleContext) InstallInRecovery() bool {
+	return m.module.InstallInRecovery()
+}
+
+func (m *moduleContext) InstallInRoot() bool {
+	return m.module.InstallInRoot()
+}
+
+func (m *moduleContext) InstallForceOS() (*OsType, *ArchType) {
+	return m.module.InstallForceOS()
+}
+
+func (m *moduleContext) InstallInVendor() bool {
+	return m.module.InstallInVendor()
+}
+
+func (m *moduleContext) skipInstall() bool {
+	if m.module.base().commonProperties.SkipInstall {
+		return true
+	}
+
+	if m.module.base().commonProperties.HideFromMake {
+		return true
+	}
+
+	// We'll need a solution for choosing which of modules with the same name in different
+	// namespaces to install.  For now, reuse the list of namespaces exported to Make as the
+	// list of namespaces to install in a Soong-only build.
+	if !m.module.base().commonProperties.NamespaceExportedToMake {
+		return true
+	}
+
+	return false
+}
+
+func (m *moduleContext) InstallFile(installPath InstallPath, name string, srcPath Path,
+	deps ...InstallPath) InstallPath {
+	return m.installFile(installPath, name, srcPath, deps, false, nil)
+}
+
+func (m *moduleContext) InstallExecutable(installPath InstallPath, name string, srcPath Path,
+	deps ...InstallPath) InstallPath {
+	return m.installFile(installPath, name, srcPath, deps, true, nil)
+}
+
+func (m *moduleContext) InstallFileWithExtraFilesZip(installPath InstallPath, name string, srcPath Path,
+	extraZip Path, deps ...InstallPath) InstallPath {
+	return m.installFile(installPath, name, srcPath, deps, false, &extraFilesZip{
+		zip: extraZip,
+		dir: installPath,
+	})
+}
+
+func (m *moduleContext) PackageFile(installPath InstallPath, name string, srcPath Path) PackagingSpec {
+	fullInstallPath := installPath.Join(m, name)
+	return m.packageFile(fullInstallPath, srcPath, false)
+}
+
+func (m *moduleContext) packageFile(fullInstallPath InstallPath, srcPath Path, executable bool) PackagingSpec {
+	licenseFiles := m.Module().EffectiveLicenseFiles()
+	spec := PackagingSpec{
+		relPathInPackage:      Rel(m, fullInstallPath.PartitionDir(), fullInstallPath.String()),
+		srcPath:               srcPath,
+		symlinkTarget:         "",
+		executable:            executable,
+		effectiveLicenseFiles: &licenseFiles,
+		partition:             fullInstallPath.partition,
+	}
+	m.packagingSpecs = append(m.packagingSpecs, spec)
+	return spec
+}
+
+func (m *moduleContext) installFile(installPath InstallPath, name string, srcPath Path, deps []InstallPath,
+	executable bool, extraZip *extraFilesZip) InstallPath {
+
+	fullInstallPath := installPath.Join(m, name)
+	m.module.base().hooks.runInstallHooks(m, srcPath, fullInstallPath, false)
+
+	if !m.skipInstall() {
+		deps = append(deps, InstallPaths(m.module.base().installFilesDepSet.ToList())...)
+
+		var implicitDeps, orderOnlyDeps Paths
+
+		if m.Host() {
+			// Installed host modules might be used during the build, depend directly on their
+			// dependencies so their timestamp is updated whenever their dependency is updated
+			implicitDeps = InstallPaths(deps).Paths()
+		} else {
+			orderOnlyDeps = InstallPaths(deps).Paths()
+		}
+
+		if m.Config().KatiEnabled() {
+			// When creating the install rule in Soong but embedding in Make, write the rule to a
+			// makefile instead of directly to the ninja file so that main.mk can add the
+			// dependencies from the `required` property that are hard to resolve in Soong.
+			m.katiInstalls = append(m.katiInstalls, katiInstall{
+				from:          srcPath,
+				to:            fullInstallPath,
+				implicitDeps:  implicitDeps,
+				orderOnlyDeps: orderOnlyDeps,
+				executable:    executable,
+				extraFiles:    extraZip,
+			})
+		} else {
+			rule := Cp
+			if executable {
+				rule = CpExecutable
+			}
+
+			extraCmds := ""
+			if extraZip != nil {
+				extraCmds += fmt.Sprintf(" && ( unzip -qDD -d '%s' '%s' 2>&1 | grep -v \"zipfile is empty\"; exit $${PIPESTATUS[0]} )",
+					extraZip.dir.String(), extraZip.zip.String())
+				extraCmds += " || ( code=$$?; if [ $$code -ne 0 -a $$code -ne 1 ]; then exit $$code; fi )"
+				implicitDeps = append(implicitDeps, extraZip.zip)
+			}
+
+			m.Build(pctx, BuildParams{
+				Rule:        rule,
+				Description: "install " + fullInstallPath.Base(),
+				Output:      fullInstallPath,
+				Input:       srcPath,
+				Implicits:   implicitDeps,
+				OrderOnly:   orderOnlyDeps,
+				Default:     !m.Config().KatiEnabled(),
+				Args: map[string]string{
+					"extraCmds": extraCmds,
+				},
+			})
+		}
+
+		m.installFiles = append(m.installFiles, fullInstallPath)
+	}
+
+	m.packageFile(fullInstallPath, srcPath, executable)
+
+	m.checkbuildFiles = append(m.checkbuildFiles, srcPath)
+
+	return fullInstallPath
+}
+
+func (m *moduleContext) InstallSymlink(installPath InstallPath, name string, srcPath InstallPath) InstallPath {
+	fullInstallPath := installPath.Join(m, name)
+	m.module.base().hooks.runInstallHooks(m, srcPath, fullInstallPath, true)
+
+	relPath, err := filepath.Rel(path.Dir(fullInstallPath.String()), srcPath.String())
+	if err != nil {
+		panic(fmt.Sprintf("Unable to generate symlink between %q and %q: %s", fullInstallPath.Base(), srcPath.Base(), err))
+	}
+	if !m.skipInstall() {
+
+		if m.Config().KatiEnabled() {
+			// When creating the symlink rule in Soong but embedding in Make, write the rule to a
+			// makefile instead of directly to the ninja file so that main.mk can add the
+			// dependencies from the `required` property that are hard to resolve in Soong.
+			m.katiSymlinks = append(m.katiSymlinks, katiInstall{
+				from: srcPath,
+				to:   fullInstallPath,
+			})
+		} else {
+			// The symlink doesn't need updating when the target is modified, but we sometimes
+			// have a dependency on a symlink to a binary instead of to the binary directly, and
+			// the mtime of the symlink must be updated when the binary is modified, so use a
+			// normal dependency here instead of an order-only dependency.
+			m.Build(pctx, BuildParams{
+				Rule:        Symlink,
+				Description: "install symlink " + fullInstallPath.Base(),
+				Output:      fullInstallPath,
+				Input:       srcPath,
+				Default:     !m.Config().KatiEnabled(),
+				Args: map[string]string{
+					"fromPath": relPath,
+				},
+			})
+		}
+
+		m.installFiles = append(m.installFiles, fullInstallPath)
+		m.checkbuildFiles = append(m.checkbuildFiles, srcPath)
+	}
+
+	m.packagingSpecs = append(m.packagingSpecs, PackagingSpec{
+		relPathInPackage: Rel(m, fullInstallPath.PartitionDir(), fullInstallPath.String()),
+		srcPath:          nil,
+		symlinkTarget:    relPath,
+		executable:       false,
+		partition:        fullInstallPath.partition,
+	})
+
+	return fullInstallPath
+}
+
+// installPath/name -> absPath where absPath might be a path that is available only at runtime
+// (e.g. /apex/...)
+func (m *moduleContext) InstallAbsoluteSymlink(installPath InstallPath, name string, absPath string) InstallPath {
+	fullInstallPath := installPath.Join(m, name)
+	m.module.base().hooks.runInstallHooks(m, nil, fullInstallPath, true)
+
+	if !m.skipInstall() {
+		if m.Config().KatiEnabled() {
+			// When creating the symlink rule in Soong but embedding in Make, write the rule to a
+			// makefile instead of directly to the ninja file so that main.mk can add the
+			// dependencies from the `required` property that are hard to resolve in Soong.
+			m.katiSymlinks = append(m.katiSymlinks, katiInstall{
+				absFrom: absPath,
+				to:      fullInstallPath,
+			})
+		} else {
+			m.Build(pctx, BuildParams{
+				Rule:        Symlink,
+				Description: "install symlink " + fullInstallPath.Base() + " -> " + absPath,
+				Output:      fullInstallPath,
+				Default:     !m.Config().KatiEnabled(),
+				Args: map[string]string{
+					"fromPath": absPath,
+				},
+			})
+		}
+
+		m.installFiles = append(m.installFiles, fullInstallPath)
+	}
+
+	m.packagingSpecs = append(m.packagingSpecs, PackagingSpec{
+		relPathInPackage: Rel(m, fullInstallPath.PartitionDir(), fullInstallPath.String()),
+		srcPath:          nil,
+		symlinkTarget:    absPath,
+		executable:       false,
+		partition:        fullInstallPath.partition,
+	})
+
+	return fullInstallPath
+}
+
+func (m *moduleContext) CheckbuildFile(srcPath Path) {
+	m.checkbuildFiles = append(m.checkbuildFiles, srcPath)
+}
+
+func (m *moduleContext) blueprintModuleContext() blueprint.ModuleContext {
+	return m.bp
+}
+
+func (m *moduleContext) LicenseMetadataFile() Path {
+	return m.module.base().licenseMetadataFile
+}
+
+// Returns a list of paths expanded from globs and modules referenced using ":module" syntax.  The property must
+// be tagged with `android:"path" to support automatic source module dependency resolution.
+//
+// Deprecated: use PathsForModuleSrc or PathsForModuleSrcExcludes instead.
+func (m *moduleContext) ExpandSources(srcFiles, excludes []string) Paths {
+	return PathsForModuleSrcExcludes(m, srcFiles, excludes)
+}
+
+// Returns a single path expanded from globs and modules referenced using ":module" syntax.  The property must
+// be tagged with `android:"path" to support automatic source module dependency resolution.
+//
+// Deprecated: use PathForModuleSrc instead.
+func (m *moduleContext) ExpandSource(srcFile, _ string) Path {
+	return PathForModuleSrc(m, srcFile)
+}
+
+// Returns an optional single path expanded from globs and modules referenced using ":module" syntax if
+// the srcFile is non-nil.  The property must be tagged with `android:"path" to support automatic source module
+// dependency resolution.
+func (m *moduleContext) ExpandOptionalSource(srcFile *string, _ string) OptionalPath {
+	if srcFile != nil {
+		return OptionalPathForPath(PathForModuleSrc(m, *srcFile))
+	}
+	return OptionalPath{}
+}
+
+func (m *moduleContext) RequiredModuleNames() []string {
+	return m.module.RequiredModuleNames()
+}
+
+func (m *moduleContext) HostRequiredModuleNames() []string {
+	return m.module.HostRequiredModuleNames()
+}
+
+func (m *moduleContext) TargetRequiredModuleNames() []string {
+	return m.module.TargetRequiredModuleNames()
+}
diff --git a/android/neverallow.go b/android/neverallow.go
index 2be6a74..f721b94 100644
--- a/android/neverallow.go
+++ b/android/neverallow.go
@@ -169,6 +169,8 @@
 		"external/kotlinx.coroutines",
 		"external/robolectric-shadows",
 		"external/robolectric",
+		"frameworks/base/ravenwood",
+		"frameworks/base/tools/hoststubgen",
 		"frameworks/layoutlib",
 	}
 
diff --git a/android/paths.go b/android/paths.go
index a6cda38..37504b6 100644
--- a/android/paths.go
+++ b/android/paths.go
@@ -2210,6 +2210,14 @@
 	RelativeInstallPath string
 }
 
+func (d *DataPath) ToRelativeInstallPath() string {
+	relPath := d.SrcPath.Rel()
+	if d.RelativeInstallPath != "" {
+		relPath = filepath.Join(d.RelativeInstallPath, relPath)
+	}
+	return relPath
+}
+
 // PathsIfNonNil returns a Paths containing only the non-nil input arguments.
 func PathsIfNonNil(paths ...Path) Paths {
 	if len(paths) == 0 {
diff --git a/android/prebuilt.go b/android/prebuilt.go
index e7b7979..91c0aa1 100644
--- a/android/prebuilt.go
+++ b/android/prebuilt.go
@@ -387,7 +387,7 @@
 
 func RegisterPrebuiltsPostDepsMutators(ctx RegisterMutatorsContext) {
 	ctx.BottomUp("prebuilt_source", PrebuiltSourceDepsMutator).Parallel()
-	ctx.TopDown("prebuilt_select", PrebuiltSelectModuleMutator).Parallel()
+	ctx.BottomUp("prebuilt_select", PrebuiltSelectModuleMutator).Parallel()
 	ctx.BottomUp("prebuilt_postdeps", PrebuiltPostDepsMutator).Parallel()
 }
 
@@ -406,6 +406,8 @@
 
 // PrebuiltSourceDepsMutator adds dependencies to the prebuilt module from the
 // corresponding source module, if one exists for the same variant.
+// Add a dependency from the prebuilt to `all_apex_contributions`
+// The metadata will be used for source vs prebuilts selection
 func PrebuiltSourceDepsMutator(ctx BottomUpMutatorContext) {
 	m := ctx.Module()
 	// If this module is a prebuilt, is enabled and has not been renamed to source then add a
@@ -416,6 +418,14 @@
 			ctx.AddReverseDependency(ctx.Module(), PrebuiltDepTag, name)
 			p.properties.SourceExists = true
 		}
+		// Add a dependency from the prebuilt to the `all_apex_contributions`
+		// metadata module
+		// TODO: When all branches contain this singleton module, make this strict
+		// TODO: Add this dependency only for mainline prebuilts and not every prebuilt module
+		if ctx.OtherModuleExists("all_apex_contributions") {
+			ctx.AddDependency(m, acDepTag, "all_apex_contributions")
+		}
+
 	}
 }
 
@@ -435,7 +445,11 @@
 
 // PrebuiltSelectModuleMutator marks prebuilts that are used, either overriding source modules or
 // because the source module doesn't exist.  It also disables installing overridden source modules.
-func PrebuiltSelectModuleMutator(ctx TopDownMutatorContext) {
+//
+// If the visited module is the metadata module `all_apex_contributions`, it sets a
+// provider containing metadata about whether source or prebuilt of mainline modules should be used.
+// This logic was added here to prevent the overhead of creating a new mutator.
+func PrebuiltSelectModuleMutator(ctx BottomUpMutatorContext) {
 	m := ctx.Module()
 	if p := GetEmbeddedPrebuilt(m); p != nil {
 		if p.srcsSupplier == nil && p.srcsPropertyName == "" {
@@ -444,6 +458,17 @@
 		if !p.properties.SourceExists {
 			p.properties.UsePrebuilt = p.usePrebuilt(ctx, nil, m)
 		}
+		// Propagate the provider received from `all_apex_contributions`
+		// to the source module
+		ctx.VisitDirectDepsWithTag(acDepTag, func(am Module) {
+			if ctx.Config().Bp2buildMode() {
+				// This provider key is not applicable in bp2build
+				return
+			}
+			psi := ctx.OtherModuleProvider(am, PrebuiltSelectionInfoProvider).(PrebuiltSelectionInfoMap)
+			ctx.SetProvider(PrebuiltSelectionInfoProvider, psi)
+		})
+
 	} else if s, ok := ctx.Module().(Module); ok {
 		ctx.VisitDirectDepsWithTag(PrebuiltDepTag, func(prebuiltModule Module) {
 			p := GetEmbeddedPrebuilt(prebuiltModule)
@@ -455,6 +480,11 @@
 			}
 		})
 	}
+	// If this is `all_apex_contributions`, set a provider containing
+	// metadata about source vs prebuilts selection
+	if am, ok := m.(*allApexContributions); ok {
+		am.SetPrebuiltSelectionInfoProvider(ctx)
+	}
 }
 
 // PrebuiltPostDepsMutator replaces dependencies on the source module with dependencies on the
@@ -480,9 +510,66 @@
 	}
 }
 
+// A wrapper around PrebuiltSelectionInfoMap.IsSelected with special handling for java_sdk_library
+// java_sdk_library is a macro that creates
+// 1. top-level impl library
+// 2. stub libraries (suffixed with .stubs...)
+//
+// java_sdk_library_import is a macro that creates
+// 1. top-level "impl" library
+// 2. stub libraries (suffixed with .stubs...)
+//
+// the impl of java_sdk_library_import is a "hook" for hiddenapi and dexpreopt processing. It does not have an impl jar, but acts as a shim
+// to provide the jar deapxed from the prebuilt apex
+//
+// isSelected uses `all_apex_contributions` to supersede source vs prebuilts selection of the stub libraries. It does not supersede the
+// selection of the top-level "impl" library so that this hook can work
+//
+// TODO (b/308174306) - Fix this when we need to support multiple prebuilts in main
+func isSelected(psi PrebuiltSelectionInfoMap, m Module) bool {
+	if sdkLibrary, ok := m.(interface{ SdkLibraryName() *string }); ok && sdkLibrary.SdkLibraryName() != nil {
+		sln := proptools.String(sdkLibrary.SdkLibraryName())
+		// This is the top-level library
+		// Do not supersede the existing prebuilts vs source selection mechanisms
+		if sln == m.base().BaseModuleName() {
+			return false
+		}
+
+		// Stub library created by java_sdk_library_import
+		if p := GetEmbeddedPrebuilt(m); p != nil {
+			return psi.IsSelected(sln, PrebuiltNameFromSource(sln))
+		}
+
+		// Stub library created by java_sdk_library
+		return psi.IsSelected(sln, sln)
+	}
+	return psi.IsSelected(m.base().BaseModuleName(), m.Name())
+}
+
 // usePrebuilt returns true if a prebuilt should be used instead of the source module.  The prebuilt
 // will be used if it is marked "prefer" or if the source module is disabled.
-func (p *Prebuilt) usePrebuilt(ctx TopDownMutatorContext, source Module, prebuilt Module) bool {
+func (p *Prebuilt) usePrebuilt(ctx BaseMutatorContext, source Module, prebuilt Module) bool {
+	// Use `all_apex_contributions` for source vs prebuilt selection.
+	psi := PrebuiltSelectionInfoMap{}
+	ctx.VisitDirectDepsWithTag(PrebuiltDepTag, func(am Module) {
+		if ctx.OtherModuleHasProvider(am, PrebuiltSelectionInfoProvider) {
+			psi = ctx.OtherModuleProvider(am, PrebuiltSelectionInfoProvider).(PrebuiltSelectionInfoMap)
+		}
+	})
+
+	// If the source module is explicitly listed in the metadata module, use that
+	if source != nil && isSelected(psi, source) {
+		return false
+	}
+	// If the prebuilt module is explicitly listed in the metadata module, use that
+	if isSelected(psi, prebuilt) {
+		return true
+	}
+
+	// If the baseModuleName could not be found in the metadata module,
+	// fall back to the existing source vs prebuilt selection.
+	// TODO: Drop the fallback mechanisms
+
 	if !ctx.Config().Bp2buildMode() {
 		if p.srcsSupplier != nil && len(p.srcsSupplier(ctx, prebuilt)) == 0 {
 			return false
diff --git a/android/prebuilt_test.go b/android/prebuilt_test.go
index fc47cfd..953258e 100644
--- a/android/prebuilt_test.go
+++ b/android/prebuilt_test.go
@@ -335,6 +335,78 @@
 			prebuilt: []OsType{Android, buildOS},
 		},
 		{
+			name: "apex_contributions supersedes any source preferred via use_source_config_var",
+			modules: `
+				source {
+					name: "bar",
+				}
+
+				prebuilt {
+					name: "bar",
+					use_source_config_var: {config_namespace: "acme", var_name: "use_source"},
+					srcs: ["prebuilt_file"],
+				}
+				apex_contributions {
+					name: "my_mainline_module_contribution",
+					api_domain: "apexfoo",
+					// this metadata module contains prebuilt
+					contents: ["prebuilt_bar"],
+				}
+				all_apex_contributions {
+					name: "all_apex_contributions",
+				}
+				`,
+			preparer: FixtureModifyProductVariables(func(variables FixtureProductVariables) {
+				variables.VendorVars = map[string]map[string]string{
+					"acme": {
+						"use_source": "true",
+					},
+				}
+				variables.BuildFlags = map[string]string{
+					"RELEASE_APEX_CONTRIBUTIONS_ADSERVICES": "my_mainline_module_contribution",
+				}
+			}),
+			// use_source_config_var indicates that source should be used
+			// but this is superseded by `my_mainline_module_contribution`
+			prebuilt: []OsType{Android, buildOS},
+		},
+		{
+			name: "apex_contributions supersedes any prebuilt preferred via use_source_config_var",
+			modules: `
+				source {
+					name: "bar",
+				}
+
+				prebuilt {
+					name: "bar",
+					use_source_config_var: {config_namespace: "acme", var_name: "use_source"},
+					srcs: ["prebuilt_file"],
+				}
+				apex_contributions {
+					name: "my_mainline_module_contribution",
+					api_domain: "apexfoo",
+					// this metadata module contains source
+					contents: ["bar"],
+				}
+				all_apex_contributions {
+					name: "all_apex_contributions",
+				}
+				`,
+			preparer: FixtureModifyProductVariables(func(variables FixtureProductVariables) {
+				variables.VendorVars = map[string]map[string]string{
+					"acme": {
+						"use_source": "false",
+					},
+				}
+				variables.BuildFlags = map[string]string{
+					"RELEASE_APEX_CONTRIBUTIONS_ADSERVICES": "my_mainline_module_contribution",
+				}
+			}),
+			// use_source_config_var indicates that prebuilt should be used
+			// but this is superseded by `my_mainline_module_contribution`
+			prebuilt: nil,
+		},
+		{
 			name: "prebuilt use_source_config_var={acme, use_source} - acme_use_source=true",
 			modules: `
 				source {
@@ -497,7 +569,7 @@
 	}
 }
 
-func testPrebuiltError(t *testing.T, expectedError, bp string) {
+func testPrebuiltErrorWithFixture(t *testing.T, expectedError, bp string, fixture FixturePreparer) {
 	t.Helper()
 	fs := MockFS{
 		"prebuilt_file": nil,
@@ -508,9 +580,15 @@
 		PrepareForTestWithOverrides,
 		fs.AddToFixture(),
 		FixtureRegisterWithContext(registerTestPrebuiltModules),
+		OptionalFixturePreparer(fixture),
 	).
 		ExtendWithErrorHandler(FixtureExpectsAtLeastOneErrorMatchingPattern(expectedError)).
 		RunTestWithBp(t, bp)
+
+}
+
+func testPrebuiltError(t *testing.T, expectedError, bp string) {
+	testPrebuiltErrorWithFixture(t, expectedError, bp, nil)
 }
 
 func TestPrebuiltShouldNotChangePartition(t *testing.T) {
@@ -559,6 +637,7 @@
 	ctx.RegisterModuleType("soong_config_module_type", SoongConfigModuleTypeFactory)
 	ctx.RegisterModuleType("soong_config_string_variable", SoongConfigStringVariableDummyFactory)
 	ctx.RegisterModuleType("soong_config_bool_variable", SoongConfigBoolVariableDummyFactory)
+	RegisterApexContributionsBuildComponents(ctx)
 }
 
 type prebuiltModule struct {
@@ -653,3 +732,33 @@
 	InitOverrideModule(m)
 	return m
 }
+
+func TestPrebuiltErrorCannotListBothSourceAndPrebuiltInContributions(t *testing.T) {
+	selectMainlineModuleContritbutions := GroupFixturePreparers(
+		FixtureModifyProductVariables(func(variables FixtureProductVariables) {
+			variables.BuildFlags = map[string]string{
+				"RELEASE_APEX_CONTRIBUTIONS_ADSERVICES": "my_apex_contributions",
+			}
+		}),
+	)
+	testPrebuiltErrorWithFixture(t, `Cannot use Soong module: prebuilt_foo from apex_contributions: my_apex_contributions because it has been added previously as: foo from apex_contributions: my_apex_contributions`, `
+		source {
+			name: "foo",
+		}
+		prebuilt {
+			name: "foo",
+			srcs: ["prebuilt_file"],
+		}
+		apex_contributions {
+			name: "my_apex_contributions",
+			api_domain: "my_mainline_module",
+			contents: [
+			  "foo",
+			  "prebuilt_foo",
+			],
+		}
+		all_apex_contributions {
+			name: "all_apex_contributions",
+		}
+		`, selectMainlineModuleContritbutions)
+}
diff --git a/android/util_test.go b/android/util_test.go
index 20161e5..699135b 100644
--- a/android/util_test.go
+++ b/android/util_test.go
@@ -811,7 +811,7 @@
 			if !reflect.DeepEqual(slice, testCase.expected) {
 				t.Errorf("expected %#v, got %#v", testCase.expected, slice)
 			}
-			if slice != nil && unsafe.SliceData(testCase.in) == unsafe.SliceData(slice) {
+			if cap(slice) > 0 && unsafe.SliceData(testCase.in) == unsafe.SliceData(slice) {
 				t.Errorf("expected slices to have different backing arrays")
 			}
 		})
diff --git a/android/variable.go b/android/variable.go
index 648e4cf..fe3a6d7 100644
--- a/android/variable.go
+++ b/android/variable.go
@@ -494,6 +494,8 @@
 	Release_expose_flagged_api *bool `json:",omitempty"`
 
 	BuildFlags map[string]string `json:",omitempty"`
+
+	BuildFromSourceStub *bool `json:",omitempty"`
 }
 
 type PartitionQualifiedVariablesType struct {
diff --git a/apex/apex.go b/apex/apex.go
index f2e8a06..ecc794b 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -482,9 +482,6 @@
 	nativeApisUsedByModuleFile   android.ModuleOutPath
 	nativeApisBackedByModuleFile android.ModuleOutPath
 	javaApisUsedByModuleFile     android.ModuleOutPath
-
-	// Collect the module directory for IDE info in java/jdeps.go.
-	modulePaths []string
 }
 
 // apexFileClass represents a type of file that can be included in APEX.
@@ -1893,7 +1890,7 @@
 		installSuffix = imageCapexSuffix
 	}
 	a.installedFile = ctx.InstallFile(a.installDir, a.Name()+installSuffix, a.outputFile,
-		a.compatSymlinks.Paths()...)
+		a.compatSymlinks...)
 
 	// filesInfo in mixed mode must retrieve all information about the apex's
 	// contents completely from the Starlark providers. It should never rely on
@@ -2406,8 +2403,6 @@
 	}
 	////////////////////////////////////////////////////////////////////////////////////////////
 	// 2) traverse the dependency tree to collect apexFile structs from them.
-	// Collect the module directory for IDE info in java/jdeps.go.
-	a.modulePaths = append(a.modulePaths, ctx.ModuleDir())
 
 	// TODO(jiyong): do this using WalkPayloadDeps
 	// TODO(jiyong): make this clean!!!
@@ -2972,7 +2967,6 @@
 	dpInfo.Deps = append(dpInfo.Deps, a.properties.Java_libs...)
 	dpInfo.Deps = append(dpInfo.Deps, a.properties.Bootclasspath_fragments...)
 	dpInfo.Deps = append(dpInfo.Deps, a.properties.Systemserverclasspath_fragments...)
-	dpInfo.Paths = append(dpInfo.Paths, a.modulePaths...)
 }
 
 var (
@@ -3037,59 +3031,6 @@
 	//
 	// Module separator
 	//
-	m["com.android.appsearch"] = []string{
-		"icing-java-proto-lite",
-	}
-	//
-	// Module separator
-	//
-	m["com.android.btservices"] = []string{
-		// empty
-	}
-	//
-	// Module separator
-	//
-	m["com.android.cellbroadcast"] = []string{}
-	//
-	// Module separator
-	//
-	m["com.android.extservices"] = []string{
-		"ExtServices-core",
-		"libtextclassifier-java",
-		"textclassifier-statsd",
-		"TextClassifierNotificationLibNoManifest",
-		"TextClassifierServiceLibNoManifest",
-	}
-	//
-	// Module separator
-	//
-	m["com.android.neuralnetworks"] = []string{
-		"android.hardware.neuralnetworks@1.0",
-		"android.hardware.neuralnetworks@1.1",
-		"android.hardware.neuralnetworks@1.2",
-		"android.hardware.neuralnetworks@1.3",
-		"android.hidl.allocator@1.0",
-		"android.hidl.memory.token@1.0",
-		"android.hidl.memory@1.0",
-		"android.hidl.safe_union@1.0",
-		"libarect",
-		"libprocpartition",
-	}
-	//
-	// Module separator
-	//
-	m["com.android.media"] = []string{
-		// empty
-	}
-	//
-	// Module separator
-	//
-	m["com.android.media.swcodec"] = []string{
-		// empty
-	}
-	//
-	// Module separator
-	//
 	m["com.android.mediaprovider"] = []string{
 		"MediaProvider",
 		"MediaProviderGoogle",
diff --git a/apex/builder.go b/apex/builder.go
index afbfa1c..3f358ac 100644
--- a/apex/builder.go
+++ b/apex/builder.go
@@ -344,10 +344,12 @@
 func (a *apexBundle) buildFileContexts(ctx android.ModuleContext) android.OutputPath {
 	var fileContexts android.Path
 	var fileContextsDir string
+	isFileContextsModule := false
 	if a.properties.File_contexts == nil {
 		fileContexts = android.PathForSource(ctx, "system/sepolicy/apex", ctx.ModuleName()+"-file_contexts")
 	} else {
 		if m, t := android.SrcIsModuleWithTag(*a.properties.File_contexts); m != "" {
+			isFileContextsModule = true
 			otherModule := android.GetModuleFromPathDep(ctx, m, t)
 			fileContextsDir = ctx.OtherModuleDir(otherModule)
 		}
@@ -363,7 +365,7 @@
 			ctx.PropertyErrorf("file_contexts", "should be under system/sepolicy, but found in  %q", fileContextsDir)
 		}
 	}
-	if !android.ExistentPathForSource(ctx, fileContexts.String()).Valid() {
+	if !isFileContextsModule && !android.ExistentPathForSource(ctx, fileContexts.String()).Valid() {
 		ctx.PropertyErrorf("file_contexts", "cannot find file_contexts file: %q", fileContexts.String())
 	}
 
@@ -372,12 +374,12 @@
 	output := android.PathForModuleOut(ctx, "file_contexts")
 	rule := android.NewRuleBuilder(pctx, ctx)
 
-	forceLabel := "u:object_r:system_file:s0"
+	labelForRoot := "u:object_r:system_file:s0"
+	labelForManifest := "u:object_r:system_file:s0"
 	if a.SocSpecific() && !a.vndkApex {
-		// APEX on /vendor should label ./ and ./apex_manifest.pb as vendor_apex_metadata_file.
-		// The reason why we skip VNDK APEX is that aosp_{pixel device} targets install VNDK APEX on /vendor
-		// even though VNDK APEX is supposed to be installed on /system. (See com.android.vndk.current.on_vendor)
-		forceLabel = "u:object_r:vendor_apex_metadata_file:s0"
+		// APEX on /vendor should label ./ and ./apex_manifest.pb as vendor file.
+		labelForRoot = "u:object_r:vendor_file:s0"
+		labelForManifest = "u:object_r:vendor_apex_metadata_file:s0"
 	}
 	// remove old file
 	rule.Command().Text("rm").FlagWithOutput("-f ", output)
@@ -387,8 +389,8 @@
 	rule.Command().Text("echo").Text(">>").Output(output)
 	if !useFileContextsAsIs {
 		// force-label /apex_manifest.pb and /
-		rule.Command().Text("echo").Text("/apex_manifest\\\\.pb").Text(forceLabel).Text(">>").Output(output)
-		rule.Command().Text("echo").Text("/").Text(forceLabel).Text(">>").Output(output)
+		rule.Command().Text("echo").Text("/apex_manifest\\\\.pb").Text(labelForManifest).Text(">>").Output(output)
+		rule.Command().Text("echo").Text("/").Text(labelForRoot).Text(">>").Output(output)
 	}
 
 	rule.Build("file_contexts."+a.Name(), "Generate file_contexts")
@@ -563,13 +565,8 @@
 		// Copy the test files (if any)
 		for _, d := range fi.dataPaths {
 			// TODO(eakammer): This is now the third repetition of ~this logic for test paths, refactoring should be possible
-			relPath := d.SrcPath.Rel()
-			dataPath := d.SrcPath.String()
-			if !strings.HasSuffix(dataPath, relPath) {
-				panic(fmt.Errorf("path %q does not end with %q", dataPath, relPath))
-			}
-
-			dataDest := imageDir.Join(ctx, fi.apexRelativePath(relPath), d.RelativeInstallPath).String()
+			relPath := d.ToRelativeInstallPath()
+			dataDest := imageDir.Join(ctx, fi.apexRelativePath(relPath)).String()
 
 			copyCommands = append(copyCommands, "cp -f "+d.SrcPath.String()+" "+dataDest)
 			implicitInputs = append(implicitInputs, d.SrcPath)
@@ -956,7 +953,7 @@
 
 	// Install to $OUT/soong/{target,host}/.../apex.
 	a.installedFile = ctx.InstallFile(a.installDir, a.Name()+installSuffix, a.outputFile,
-		a.compatSymlinks.Paths()...)
+		a.compatSymlinks...)
 
 	// installed-files.txt is dist'ed
 	a.installedFilesFile = a.buildInstalledFilesFile(ctx, a.outputFile, imageDir)
@@ -1095,7 +1092,8 @@
 		if f.installDir == "bin" || strings.HasPrefix(f.installDir, "bin/") {
 			executablePaths = append(executablePaths, pathInApex)
 			for _, d := range f.dataPaths {
-				readOnlyPaths = append(readOnlyPaths, filepath.Join(f.installDir, d.RelativeInstallPath, d.SrcPath.Rel()))
+				rel := d.ToRelativeInstallPath()
+				readOnlyPaths = append(readOnlyPaths, filepath.Join(f.installDir, rel))
 			}
 			for _, s := range f.symlinks {
 				executablePaths = append(executablePaths, filepath.Join(f.installDir, s))
diff --git a/apex/prebuilt.go b/apex/prebuilt.go
index 7a9d23e..7d339d5 100644
--- a/apex/prebuilt.go
+++ b/apex/prebuilt.go
@@ -794,7 +794,7 @@
 	}
 
 	if p.installable() {
-		p.installedFile = ctx.InstallFile(p.installDir, p.installFilename, p.inputApex, p.compatSymlinks.Paths()...)
+		p.installedFile = ctx.InstallFile(p.installDir, p.installFilename, p.inputApex, p.compatSymlinks...)
 		p.provenanceMetaDataFile = provenance.GenerateArtifactProvenanceMetaData(ctx, p.inputApex, p.installedFile)
 	}
 }
diff --git a/bp2build/Android.bp b/bp2build/Android.bp
index 14e32ed..64ee01f 100644
--- a/bp2build/Android.bp
+++ b/bp2build/Android.bp
@@ -6,6 +6,7 @@
     name: "soong-bp2build",
     pkgPath: "android/soong/bp2build",
     srcs: [
+        "aconfig_conversion_test.go",
         "androidbp_to_build_templates.go",
         "bp2build.go",
         "bp2build_product_config.go",
@@ -21,6 +22,7 @@
     deps: [
         "blueprint-bootstrap",
         "soong-aidl-library",
+        "soong-aconfig",
         "soong-android",
         "soong-android-allowlists",
         "soong-android-soongconfig",
diff --git a/bp2build/aconfig_conversion_test.go b/bp2build/aconfig_conversion_test.go
index ca41680..d6e20df 100644
--- a/bp2build/aconfig_conversion_test.go
+++ b/bp2build/aconfig_conversion_test.go
@@ -156,7 +156,7 @@
 			name: "foo",
 			aconfig_declarations: "foo_aconfig_declarations",
 			libs: ["foo_java_library"],
-			test: true,
+			mode: "test",
 	}
 	`
 	expectedBazelTargets := []string{
@@ -184,7 +184,6 @@
 			AttrNameToString{
 				"aconfig_declarations":   `":foo_aconfig_declarations"`,
 				"libs":                   `[":foo_java_library-neverlink"]`,
-				"test":                   `True`,
 				"sdk_version":            `"system_current"`,
 				"target_compatible_with": `["//build/bazel_common_rules/platforms/os:android"]`,
 			},
@@ -213,7 +212,7 @@
 	java_aconfig_library {
 			name: "foo_aconfig_library",
 			aconfig_declarations: "foo_aconfig_declarations",
-			test: true,
+			mode: "test",
 	}
 	`
 	expectedBazelTargets := []string{
@@ -230,7 +229,6 @@
 			"foo_aconfig_library",
 			AttrNameToString{
 				"aconfig_declarations":   `":foo_aconfig_declarations"`,
-				"test":                   `True`,
 				"sdk_version":            `"system_current"`,
 				"target_compatible_with": `["//build/bazel_common_rules/platforms/os:android"]`,
 			},
diff --git a/cc/Android.bp b/cc/Android.bp
index 8fa0fbe..77e96db 100644
--- a/cc/Android.bp
+++ b/cc/Android.bp
@@ -19,6 +19,7 @@
         "soong-multitree",
         "soong-snapshot",
         "soong-sysprop-bp2build",
+        "soong-testing",
         "soong-tradefed",
     ],
     srcs: [
diff --git a/cc/afdo.go b/cc/afdo.go
index ac210d4..91cf0b8 100644
--- a/cc/afdo.go
+++ b/cc/afdo.go
@@ -35,7 +35,7 @@
 var afdoProfileProjectsConfigKey = android.NewOnceKey("AfdoProfileProjects")
 
 // This flag needs to be in both CFlags and LdFlags to ensure correct symbol ordering
-const afdoFlagsFormat = "-fprofile-sample-use=%s"
+const afdoFlagsFormat = "-fprofile-sample-use=%s -fprofile-sample-accurate"
 
 func recordMissingAfdoProfileFile(ctx android.BaseModuleContext, missing string) {
 	getNamedMapForConfig(ctx.Config(), modulesMissingProfileFileKey).Store(missing, true)
diff --git a/cc/builder.go b/cc/builder.go
index 3f582fa..69cf75b 100644
--- a/cc/builder.go
+++ b/cc/builder.go
@@ -681,16 +681,11 @@
 			tidyCmd := "${config.ClangBin}/clang-tidy"
 
 			rule := clangTidy
-			reducedCFlags := moduleFlags
 			if ctx.Config().UseRBE() && ctx.Config().IsEnvTrue("RBE_CLANG_TIDY") {
 				rule = clangTidyRE
-				// b/248371171, work around RBE input processor problem
-				// some cflags rejected by input processor, but usually
-				// do not affect included files or clang-tidy
-				reducedCFlags = config.TidyReduceCFlags(reducedCFlags)
 			}
 
-			sharedCFlags := shareFlags("cFlags", reducedCFlags)
+			sharedCFlags := shareFlags("cFlags", moduleFlags)
 			srcRelPath := srcFile.Rel()
 
 			// Add the .tidy rule
diff --git a/cc/cc.go b/cc/cc.go
index 814a66c..e215438 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -24,6 +24,7 @@
 	"strconv"
 	"strings"
 
+	"android/soong/testing"
 	"android/soong/ui/metrics/bp2build_metrics_proto"
 
 	"github.com/google/blueprint"
@@ -862,9 +863,10 @@
 	Properties       BaseProperties
 
 	// initialize before calling Init
-	hod       android.HostOrDeviceSupported
-	multilib  android.Multilib
-	bazelable bool
+	hod        android.HostOrDeviceSupported
+	multilib   android.Multilib
+	bazelable  bool
+	testModule bool
 
 	// Allowable SdkMemberTypes of this module type.
 	sdkMemberTypes []android.SdkMemberType
@@ -2329,6 +2331,9 @@
 			}
 		}
 	}
+	if c.testModule {
+		ctx.SetProvider(testing.TestModuleProviderKey, testing.TestModuleProviderData{})
+	}
 
 	c.maybeInstall(ctx, apexInfo)
 }
diff --git a/cc/cc_test.go b/cc/cc_test.go
index 794c5ee..e2dba90 100644
--- a/cc/cc_test.go
+++ b/cc/cc_test.go
@@ -720,7 +720,7 @@
 		return
 	}
 	if len(testBinary.dataPaths()) != 1 {
-		t.Errorf("expected exactly one test data file. test data files: [%s]", testBinary.dataPaths())
+		t.Errorf("expected exactly one test data file. test data files: [%v]", testBinary.dataPaths())
 		return
 	}
 
@@ -777,7 +777,7 @@
 		t.Fatalf("expected exactly one output file. output files: [%s]", outputFiles)
 	}
 	if len(testBinary.dataPaths()) != 2 {
-		t.Fatalf("expected exactly one test data file. test data files: [%s]", testBinary.dataPaths())
+		t.Fatalf("expected exactly one test data file. test data files: [%v]", testBinary.dataPaths())
 	}
 
 	outputPath := outputFiles[0].String()
@@ -3332,7 +3332,7 @@
 		t.Errorf("expected exactly one output file. output files: [%s]", outputFiles)
 	}
 	if len(testBinary.dataPaths()) != 1 {
-		t.Errorf("expected exactly one test data file. test data files: [%s]", testBinary.dataPaths())
+		t.Errorf("expected exactly one test data file. test data files: [%v]", testBinary.dataPaths())
 	}
 
 	outputPath := outputFiles[0].String()
diff --git a/cc/config/tidy.go b/cc/config/tidy.go
index efa4549..b40557a 100644
--- a/cc/config/tidy.go
+++ b/cc/config/tidy.go
@@ -16,7 +16,6 @@
 
 import (
 	"android/soong/android"
-	"regexp"
 	"strings"
 )
 
@@ -281,11 +280,3 @@
 	}
 	return flags
 }
-
-var (
-	removedCFlags = regexp.MustCompile(" -fsanitize=[^ ]*memtag-[^ ]* ")
-)
-
-func TidyReduceCFlags(flags string) string {
-	return removedCFlags.ReplaceAllString(flags, " ")
-}
diff --git a/cc/config/x86_64_device.go b/cc/config/x86_64_device.go
index 9f093bb..00a395f 100644
--- a/cc/config/x86_64_device.go
+++ b/cc/config/x86_64_device.go
@@ -33,6 +33,8 @@
 		"-Wl,--hash-style=gnu",
 	}
 
+	X86_64Lldflags = x86_64Ldflags
+
 	x86_64ArchVariantCflags = map[string][]string{
 		"": []string{
 			"-march=x86-64",
@@ -94,10 +96,23 @@
 	exportedVars.ExportStringListStaticVariable("X86_64ToolchainLdflags", []string{"-m64"})
 
 	exportedVars.ExportStringListStaticVariable("X86_64Ldflags", x86_64Ldflags)
-	exportedVars.ExportStringListStaticVariable("X86_64Lldflags", x86_64Ldflags)
+	exportedVars.ExportStringList("X86_64Lldflags", X86_64Lldflags)
+	pctx.VariableFunc("X86_64Lldflags", func(ctx android.PackageVarContext) string {
+		maxPageSizeFlag := "-Wl,-z,max-page-size=" + ctx.Config().MaxPageSizeSupported()
+		flags := append(X86_64Lldflags, maxPageSizeFlag)
+		return strings.Join(flags, " ")
+	})
 
 	// Clang cflags
-	exportedVars.ExportStringListStaticVariable("X86_64Cflags", x86_64Cflags)
+	exportedVars.ExportStringList("X86_64Cflags", x86_64Cflags)
+	pctx.VariableFunc("X86_64Cflags", func(ctx android.PackageVarContext) string {
+		flags := x86_64Cflags
+		if ctx.Config().PageSizeAgnostic() {
+			flags = append(flags, "-D__BIONIC_NO_PAGE_SIZE_MACRO")
+		}
+		return strings.Join(flags, " ")
+	})
+
 	exportedVars.ExportStringListStaticVariable("X86_64Cppflags", x86_64Cppflags)
 
 	// Yasm flags
diff --git a/cc/fuzz.go b/cc/fuzz.go
index df9f21a..8fc4898 100644
--- a/cc/fuzz.go
+++ b/cc/fuzz.go
@@ -96,6 +96,7 @@
 // your device, or $ANDROID_PRODUCT_OUT/data/fuzz in your build tree.
 func LibFuzzFactory() android.Module {
 	module := NewFuzzer(android.HostAndDeviceSupported)
+	module.testModule = true
 	return module.Init()
 }
 
diff --git a/cc/lto.go b/cc/lto.go
index fb3b485..30d7b757 100644
--- a/cc/lto.go
+++ b/cc/lto.go
@@ -147,10 +147,11 @@
 			}
 		}
 
-		// Register allocation MLGO flags for ARM64.
-		if ctx.Arch().ArchType == android.Arm64 {
-			ltoCFlags = append(ltoCFlags, "-mllvm -regalloc-enable-advisor=release")
-			ltoLdFlags = append(ltoLdFlags, "-Wl,-mllvm,-regalloc-enable-advisor=release")
+		if !ctx.Config().IsEnvFalse("THINLTO_USE_MLGO") {
+			// Register allocation MLGO flags for ARM64.
+			if ctx.Arch().ArchType == android.Arm64 {
+				ltoLdFlags = append(ltoLdFlags, "-Wl,-mllvm,-regalloc-enable-advisor=release")
+			}
 			// Flags for training MLGO model.
 			if ctx.Config().IsEnvTrue("THINLTO_EMIT_INDEXES_AND_IMPORTS") {
 				ltoLdFlags = append(ltoLdFlags, "-Wl,--save-temps=import")
diff --git a/cc/test.go b/cc/test.go
index 5b778dc..a4224c3 100644
--- a/cc/test.go
+++ b/cc/test.go
@@ -158,6 +158,7 @@
 // binary.
 func BenchmarkFactory() android.Module {
 	module := NewBenchmark(android.HostAndDeviceSupported)
+	module.testModule = true
 	return module.Init()
 }
 
@@ -489,6 +490,7 @@
 	module, binary := newBinary(hod, bazelable)
 	module.bazelable = bazelable
 	module.multilib = android.MultilibBoth
+	module.testModule = true
 	binary.baseInstaller = NewTestInstaller()
 
 	test := &testBinary{
diff --git a/cmd/soong_build/main.go b/cmd/soong_build/main.go
index 568a6f8..5abbdb7 100644
--- a/cmd/soong_build/main.go
+++ b/cmd/soong_build/main.go
@@ -84,7 +84,7 @@
 	flag.BoolVar(&cmdlineArgs.BazelMode, "bazel-mode", false, "use bazel for analysis of certain modules")
 	flag.BoolVar(&cmdlineArgs.BazelModeStaging, "bazel-mode-staging", false, "use bazel for analysis of certain near-ready modules")
 	flag.BoolVar(&cmdlineArgs.UseBazelProxy, "use-bazel-proxy", false, "communicate with bazel using unix socket proxy instead of spawning subprocesses")
-	flag.BoolVar(&cmdlineArgs.BuildFromTextStub, "build-from-text-stub", false, "build Java stubs from API text files instead of source files")
+	flag.BoolVar(&cmdlineArgs.BuildFromSourceStub, "build-from-source-stub", false, "build Java stubs from source files instead of API text files")
 	flag.BoolVar(&cmdlineArgs.EnsureAllowlistIntegrity, "ensure-allowlist-integrity", false, "verify that allowlisted modules are mixed-built")
 	// Flags that probably shouldn't be flags of soong_build, but we haven't found
 	// the time to remove them yet
diff --git a/cmd/soong_ui/main.go b/cmd/soong_ui/main.go
index 34b1589..c94ff07 100644
--- a/cmd/soong_ui/main.go
+++ b/cmd/soong_ui/main.go
@@ -692,9 +692,11 @@
 	}
 
 	ctx.Verbosef("Current file limits: %d soft, %d hard", limits.Cur, limits.Max)
-	if limits.Cur == limits.Max {
-		return
-	}
+
+	// Go 1.21 modifies the file limit but restores the original when
+	// execing subprocesses if it hasn't be overridden.  Call Setrlimit
+	// here even if it doesn't appear to be necessary so that the
+	// syscall package considers it set.
 
 	limits.Cur = limits.Max
 	err = syscall.Setrlimit(syscall.RLIMIT_NOFILE, &limits)
diff --git a/dexpreopt/config.go b/dexpreopt/config.go
index ba41f4a..c871e85 100644
--- a/dexpreopt/config.go
+++ b/dexpreopt/config.go
@@ -32,7 +32,7 @@
 	DisablePreoptBootImages bool     // disable prepot for boot images
 	DisablePreoptModules    []string // modules with preopt disabled by product-specific config
 
-	OnlyPreoptBootImageAndSystemServer bool // only preopt jars in the boot image or system server
+	OnlyPreoptArtBootImage bool // only preopt jars in the ART boot image
 
 	PreoptWithUpdatableBcp bool // If updatable boot jars are included in dexpreopt or not.
 
@@ -691,45 +691,45 @@
 
 func GlobalConfigForTests(ctx android.PathContext) *GlobalConfig {
 	return &GlobalConfig{
-		DisablePreopt:                      false,
-		DisablePreoptModules:               nil,
-		OnlyPreoptBootImageAndSystemServer: false,
-		HasSystemOther:                     false,
-		PatternsOnSystemOther:              nil,
-		DisableGenerateProfile:             false,
-		ProfileDir:                         "",
-		BootJars:                           android.EmptyConfiguredJarList(),
-		ApexBootJars:                       android.EmptyConfiguredJarList(),
-		ArtApexJars:                        android.EmptyConfiguredJarList(),
-		TestOnlyArtBootImageJars:           android.EmptyConfiguredJarList(),
-		SystemServerJars:                   android.EmptyConfiguredJarList(),
-		SystemServerApps:                   nil,
-		ApexSystemServerJars:               android.EmptyConfiguredJarList(),
-		StandaloneSystemServerJars:         android.EmptyConfiguredJarList(),
-		ApexStandaloneSystemServerJars:     android.EmptyConfiguredJarList(),
-		SpeedApps:                          nil,
-		PreoptFlags:                        nil,
-		DefaultCompilerFilter:              "",
-		SystemServerCompilerFilter:         "",
-		GenerateDMFiles:                    false,
-		NoDebugInfo:                        false,
-		DontResolveStartupStrings:          false,
-		AlwaysSystemServerDebugInfo:        false,
-		NeverSystemServerDebugInfo:         false,
-		AlwaysOtherDebugInfo:               false,
-		NeverOtherDebugInfo:                false,
-		IsEng:                              false,
-		SanitizeLite:                       false,
-		DefaultAppImages:                   false,
-		Dex2oatXmx:                         "",
-		Dex2oatXms:                         "",
-		EmptyDirectory:                     "empty_dir",
-		CpuVariant:                         nil,
-		InstructionSetFeatures:             nil,
-		BootImageProfiles:                  nil,
-		BootFlags:                          "",
-		Dex2oatImageXmx:                    "",
-		Dex2oatImageXms:                    "",
+		DisablePreopt:                  false,
+		DisablePreoptModules:           nil,
+		OnlyPreoptArtBootImage:         false,
+		HasSystemOther:                 false,
+		PatternsOnSystemOther:          nil,
+		DisableGenerateProfile:         false,
+		ProfileDir:                     "",
+		BootJars:                       android.EmptyConfiguredJarList(),
+		ApexBootJars:                   android.EmptyConfiguredJarList(),
+		ArtApexJars:                    android.EmptyConfiguredJarList(),
+		TestOnlyArtBootImageJars:       android.EmptyConfiguredJarList(),
+		SystemServerJars:               android.EmptyConfiguredJarList(),
+		SystemServerApps:               nil,
+		ApexSystemServerJars:           android.EmptyConfiguredJarList(),
+		StandaloneSystemServerJars:     android.EmptyConfiguredJarList(),
+		ApexStandaloneSystemServerJars: android.EmptyConfiguredJarList(),
+		SpeedApps:                      nil,
+		PreoptFlags:                    nil,
+		DefaultCompilerFilter:          "",
+		SystemServerCompilerFilter:     "",
+		GenerateDMFiles:                false,
+		NoDebugInfo:                    false,
+		DontResolveStartupStrings:      false,
+		AlwaysSystemServerDebugInfo:    false,
+		NeverSystemServerDebugInfo:     false,
+		AlwaysOtherDebugInfo:           false,
+		NeverOtherDebugInfo:            false,
+		IsEng:                          false,
+		SanitizeLite:                   false,
+		DefaultAppImages:               false,
+		Dex2oatXmx:                     "",
+		Dex2oatXms:                     "",
+		EmptyDirectory:                 "empty_dir",
+		CpuVariant:                     nil,
+		InstructionSetFeatures:         nil,
+		BootImageProfiles:              nil,
+		BootFlags:                      "",
+		Dex2oatImageXmx:                "",
+		Dex2oatImageXms:                "",
 	}
 }
 
diff --git a/dexpreopt/dexpreopt.go b/dexpreopt/dexpreopt.go
index 29ae188..c13e14a 100644
--- a/dexpreopt/dexpreopt.go
+++ b/dexpreopt/dexpreopt.go
@@ -124,12 +124,7 @@
 		return true
 	}
 
-	// If OnlyPreoptBootImageAndSystemServer=true and module is not in boot class path skip
-	// Also preopt system server jars since selinux prevents system server from loading anything from
-	// /data. If we don't do this they will need to be extracted which is not favorable for RAM usage
-	// or performance. If PreoptExtractedApk is true, we ignore the only preopt boot image options.
-	if global.OnlyPreoptBootImageAndSystemServer && !global.BootJars.ContainsJar(module.Name) &&
-		!global.AllSystemServerJars(ctx).ContainsJar(module.Name) && !module.PreoptExtractedApk {
+	if global.OnlyPreoptArtBootImage && !module.PreoptExtractedApk {
 		return true
 	}
 
diff --git a/etc/prebuilt_etc.go b/etc/prebuilt_etc.go
index 275d9c3..b7d2971 100644
--- a/etc/prebuilt_etc.go
+++ b/etc/prebuilt_etc.go
@@ -150,8 +150,9 @@
 	sourceFilePath android.Path
 	outputFilePath android.OutputPath
 	// The base install location, e.g. "etc" for prebuilt_etc, "usr/share" for prebuilt_usr_share.
-	installDirBase   string
-	installDirBase64 string
+	installDirBase               string
+	installDirBase64             string
+	installAvoidMultilibConflict bool
 	// The base install location when soc_specific property is set to true, e.g. "firmware" for
 	// prebuilt_firmware.
 	socInstallDirBase      string
@@ -355,6 +356,10 @@
 	if p.SocSpecific() && p.socInstallDirBase != "" {
 		installBaseDir = p.socInstallDirBase
 	}
+	if p.installAvoidMultilibConflict && !ctx.Host() && ctx.Config().HasMultilibConflict(ctx.Arch().ArchType) {
+		installBaseDir = filepath.Join(installBaseDir, ctx.Arch().ArchType.String())
+	}
+
 	p.installDirPath = android.PathForModuleInstall(ctx, installBaseDir, p.SubDir())
 
 	// Call InstallFile even when uninstallable to make the module included in the package
@@ -590,6 +595,7 @@
 	module := &PrebuiltEtc{}
 	module.makeClass = "RENDERSCRIPT_BITCODE"
 	module.installDirBase64 = "lib64"
+	module.installAvoidMultilibConflict = true
 	InitPrebuiltEtcModule(module, "lib")
 	// This module is device-only
 	android.InitAndroidArchModule(module, android.DeviceSupported, android.MultilibBoth)
diff --git a/filesystem/filesystem.go b/filesystem/filesystem.go
index f2efd46..3d49114 100644
--- a/filesystem/filesystem.go
+++ b/filesystem/filesystem.go
@@ -350,13 +350,16 @@
 		addStr("avb_algorithm", algorithm)
 		key := android.PathForModuleSrc(ctx, proptools.String(f.properties.Avb_private_key))
 		addPath("avb_key_path", key)
+		partitionName := proptools.StringDefault(f.properties.Partition_name, f.Name())
+		addStr("partition_name", partitionName)
 		avb_add_hashtree_footer_args := "--do_not_generate_fec"
 		if hashAlgorithm := proptools.String(f.properties.Avb_hash_algorithm); hashAlgorithm != "" {
 			avb_add_hashtree_footer_args += " --hash_algorithm " + hashAlgorithm
 		}
+		securityPatchKey := "com.android.build." + partitionName + ".security_patch"
+		securityPatchValue := ctx.Config().PlatformSecurityPatch()
+		avb_add_hashtree_footer_args += " --prop " + securityPatchKey + ":" + securityPatchValue
 		addStr("avb_add_hashtree_footer_args", avb_add_hashtree_footer_args)
-		partitionName := proptools.StringDefault(f.properties.Partition_name, f.Name())
-		addStr("partition_name", partitionName)
 		addStr("avb_salt", f.salt())
 	}
 
diff --git a/genrule/allowlists.go b/genrule/allowlists.go
index 8617de8..01b5666 100644
--- a/genrule/allowlists.go
+++ b/genrule/allowlists.go
@@ -18,31 +18,6 @@
 	DepfileAllowList = []string{
 		// go/keep-sorted start
 		"depfile_allowed_for_test",
-		"gen_uwb_core_proto",
-		"libtextclassifier_fbgen_actions_actions-entity-data",
-		"libtextclassifier_fbgen_actions_actions_model",
-		"libtextclassifier_fbgen_annotator_datetime_datetime",
-		"libtextclassifier_fbgen_annotator_entity-data",
-		"libtextclassifier_fbgen_annotator_experimental_experimental",
-		"libtextclassifier_fbgen_annotator_model",
-		"libtextclassifier_fbgen_annotator_person_name_person_name_model",
-		"libtextclassifier_fbgen_lang_id_common_flatbuffers_embedding-network",
-		"libtextclassifier_fbgen_lang_id_common_flatbuffers_model",
-		"libtextclassifier_fbgen_utils_codepoint-range",
-		"libtextclassifier_fbgen_utils_container_bit-vector",
-		"libtextclassifier_fbgen_utils_flatbuffers_flatbuffers",
-		"libtextclassifier_fbgen_utils_flatbuffers_flatbuffers_test",
-		"libtextclassifier_fbgen_utils_grammar_rules",
-		"libtextclassifier_fbgen_utils_grammar_semantics_expression",
-		"libtextclassifier_fbgen_utils_grammar_testing_value",
-		"libtextclassifier_fbgen_utils_i18n_language-tag",
-		"libtextclassifier_fbgen_utils_intents_intent-config",
-		"libtextclassifier_fbgen_utils_lua_utils_tests",
-		"libtextclassifier_fbgen_utils_normalization",
-		"libtextclassifier_fbgen_utils_resources",
-		"libtextclassifier_fbgen_utils_tflite_text_encoder_config",
-		"libtextclassifier_fbgen_utils_tokenizer",
-		"libtextclassifier_fbgen_utils_zlib_buffer",
 		"tflite_support_metadata_schema",
 		"tflite_support_spm_config",
 		"tflite_support_spm_encoder_config",
@@ -51,26 +26,7 @@
 
 	SandboxingDenyModuleList = []string{
 		// go/keep-sorted start
-		"CompilationTestCases_package-dex-usage",
-		"ControlEnvProxyServerProto_cc",
-		"ControlEnvProxyServerProto_h",
 		"CtsApkVerityTestDebugFiles",
-		"FrontendStub_cc",
-		"FrontendStub_h",
-		"HeadlessBuildTimestamp",
-		"ImageProcessing-rscript",
-		"ImageProcessing2-rscript",
-		"ImageProcessingJB-rscript",
-		"MultiDexLegacyTestApp_genrule",
-		"PackageManagerServiceServerTests_apks_as_resources",
-		"PacketStreamerStub_cc",
-		"PacketStreamerStub_h",
-		"RSTest-rscript",
-		"RSTest_v11-rscript",
-		"RSTest_v14-rscript",
-		"RSTest_v16-rscript",
-		"Refocus-rscript",
-		"RsBalls-rscript",
 		"ScriptGroupTest-rscript",
 		"TracingVMProtoStub_cc",
 		"TracingVMProtoStub_h",
@@ -82,110 +38,26 @@
 		"VehicleServerProtoStub_h@default-grpc",
 		"aidl-golden-test-build-hook-gen",
 		"aidl_camera_build_version",
-		"android-cts-verifier",
-		"android-support-multidex-instrumentation-version",
-		"android-support-multidex-version",
-		"angle_commit_id",
-		"apexer_test_host_tools",
-		"atest_integration_fake_src",
-		"authfs_test_apk_assets",
-		"awkgram.tab.h",
-		"bluetooth_core_rust_packets",
-		"c2hal_test_genc++",
-		"c2hal_test_genc++_headers",
 		"camera-its",
 		"checkIn-service-stub-lite",
 		"chre_atoms_log.h",
-		"common-profile-text-protos",
-		"core-tests-smali-dex",
 		"cronet_aml_base_android_runtime_jni_headers",
 		"cronet_aml_base_android_runtime_jni_headers__testing",
 		"cronet_aml_base_android_runtime_unchecked_jni_headers",
 		"cronet_aml_base_android_runtime_unchecked_jni_headers__testing",
 		"deqp_spvtools_update_build_version",
-		"egl_extensions_functions_hdr",
-		"egl_functions_hdr",
-		"emp_ematch.yacc.c",
-		"emp_ematch.yacc.h",
-		"fdt_test_tree_empty_memory_range_dtb",
-		"fdt_test_tree_multiple_memory_ranges_dtb",
-		"fdt_test_tree_one_memory_range_dtb",
-		"futility_cmds",
-		"gd_hci_packets_python3_gen",
-		"gd_smp_packets_python3_gen",
 		"gen_corrupt_rebootless_apex",
-		"gen_corrupt_superblock_apex",
 		"gen_key_mismatch_capex",
-		"gen_manifest_mismatch_apex_no_hashtree",
-		"generate_hash_v1",
-		"gles1_core_functions_hdr",
-		"gles1_extensions_functions_hdr",
-		"gles2_core_functions_hdr",
-		"gles2_extensions_functions_hdr",
-		"gles31_only_functions_hdr",
-		"gles3_only_functions_hdr",
-		"hci_packets_python3_gen",
-		"hidl2aidl_test_gen_aidl",
-		"hidl2aidl_translate_cpp_test_gen_headers",
-		"hidl2aidl_translate_cpp_test_gen_src",
-		"hidl2aidl_translate_java_test_gen_src",
-		"hidl2aidl_translate_ndk_test_gen_headers",
-		"hidl2aidl_translate_ndk_test_gen_src",
-		"hidl_cpp_impl_test_gen-headers",
-		"hidl_cpp_impl_test_gen-sources",
-		"hidl_error_test_gen",
-		"hidl_export_test_gen-headers",
-		"hidl_format_test_diff",
-		"hidl_hash_test_gen",
-		"hidl_hash_version_gen",
-		"hidl_java_impl_test_gen",
-		"lib-test-profile-text-protos",
 		"libbssl_sys_src_nostd",
 		"libc_musl_sysroot_bits",
-		"libchrome-crypto-include",
-		"libchrome-include",
 		"libcore-non-cts-tests-txt",
-		"libmojo_jni_headers",
-		"libxml2_schema_fuzz_corpus",
-		"libxml2_xml_fuzz_corpus",
-		"link_layer_packets_python3_gen",
-		"llcp_packets_python3_gen",
-		"measure_io_as_jar",
-		"openwrt_rootfs_combined_aarch64",
-		"openwrt_rootfs_combined_x86_64",
-		"openwrt_rootfs_customization_aarch64",
-		"openwrt_rootfs_customization_x86_64",
-		"pandora-python-gen-src",
-		"pdl_cxx_canonical_be_src_gen",
-		"pdl_cxx_canonical_be_test_gen",
-		"pdl_cxx_canonical_le_src_gen",
-		"pdl_cxx_canonical_le_test_gen",
-		"pdl_python_generator_be_test_gen",
-		"pdl_python_generator_le_test_gen",
-		"pdl_rust_noalloc_le_test_backend_srcs",
-		"pdl_rust_noalloc_le_test_gen_harness",
-		"pixelatoms_defs.h",
-		"pixelstatsatoms.cpp",
-		"pixelstatsatoms.h",
 		"pvmfw_fdt_template_rs",
 		"r8retrace-dexdump-sample-app",
 		"r8retrace-run-retrace",
-		"rootcanal_bredr_bb_packets_cxx_gen",
-		"rootcanal_hci_packets_cxx_gen",
-		"rootcanal_link_layer_packets_cxx_gen",
-		"sample-profile-text-protos",
 		"seller-frontend-service-stub-lite",
-		"services.core.protologsrc",
-		"statsd-config-protos",
 		"swiftshader_spvtools_update_build_version",
-		"temp_layoutlib",
 		"ue_unittest_erofs_imgs",
-		"uwb_core_artifacts",
 		"vm-tests-tf-lib",
-		"vndk_abi_dump_zip",
-		"vts_vndk_abi_dump_zip",
-		"wm_shell_protolog_src",
-		"wmtests.protologsrc",
 		// go/keep-sorted end
 	}
 
diff --git a/genrule/genrule.go b/genrule/genrule.go
index 01cac5b..8f2c047 100644
--- a/genrule/genrule.go
+++ b/genrule/genrule.go
@@ -189,9 +189,6 @@
 
 	subName string
 	subDir  string
-
-	// Collect the module directory for IDE info in java/jdeps.go.
-	modulePaths []string
 }
 
 var _ android.MixedBuildBuildable = (*Module)(nil)
@@ -289,9 +286,6 @@
 func (g *Module) generateCommonBuildActions(ctx android.ModuleContext) {
 	g.subName = ctx.ModuleSubDir()
 
-	// Collect the module directory for IDE info in java/jdeps.go.
-	g.modulePaths = append(g.modulePaths, ctx.ModuleDir())
-
 	if len(g.properties.Export_include_dirs) > 0 {
 		for _, dir := range g.properties.Export_include_dirs {
 			g.exportedIncludeDirs = append(g.exportedIncludeDirs,
@@ -668,7 +662,6 @@
 			dpInfo.Deps = append(dpInfo.Deps, src)
 		}
 	}
-	dpInfo.Paths = append(dpInfo.Paths, g.modulePaths...)
 }
 
 func (g *Module) AndroidMk() android.AndroidMkData {
diff --git a/java/Android.bp b/java/Android.bp
index 4450c42..cf96871 100644
--- a/java/Android.bp
+++ b/java/Android.bp
@@ -15,6 +15,7 @@
         "soong-dexpreopt",
         "soong-genrule",
         "soong-java-config",
+        "soong-testing",
         "soong-provenance",
         "soong-python",
         "soong-remoteexec",
@@ -112,6 +113,7 @@
         "sdk_library_test.go",
         "system_modules_test.go",
         "systemserver_classpath_fragment_test.go",
+        "test_spec_test.go",
     ],
     pluginFor: ["soong_build"],
 }
diff --git a/java/aapt2.go b/java/aapt2.go
index 3bb70b5..17ee6ee 100644
--- a/java/aapt2.go
+++ b/java/aapt2.go
@@ -25,17 +25,23 @@
 	"android/soong/android"
 )
 
+func isPathValueResource(res android.Path) bool {
+	subDir := filepath.Dir(res.String())
+	subDir, lastDir := filepath.Split(subDir)
+	return strings.HasPrefix(lastDir, "values")
+}
+
 // Convert input resource file path to output file path.
 // values-[config]/<file>.xml -> values-[config]_<file>.arsc.flat;
 // For other resource file, just replace the last "/" with "_" and add .flat extension.
 func pathToAapt2Path(ctx android.ModuleContext, res android.Path) android.WritablePath {
 
 	name := res.Base()
-	subDir := filepath.Dir(res.String())
-	subDir, lastDir := filepath.Split(subDir)
-	if strings.HasPrefix(lastDir, "values") {
+	if isPathValueResource(res) {
 		name = strings.TrimSuffix(name, ".xml") + ".arsc"
 	}
+	subDir := filepath.Dir(res.String())
+	subDir, lastDir := filepath.Split(subDir)
 	name = lastDir + "_" + name + ".flat"
 	return android.PathForModuleOut(ctx, "aapt2", subDir, name)
 }
@@ -63,7 +69,21 @@
 
 // aapt2Compile compiles resources and puts the results in the requested directory.
 func aapt2Compile(ctx android.ModuleContext, dir android.Path, paths android.Paths,
-	flags []string) android.WritablePaths {
+	flags []string, productToFilter string) android.WritablePaths {
+	if productToFilter != "" && productToFilter != "default" {
+		// --filter-product leaves only product-specific resources. Product-specific resources only exist
+		// in value resources (values/*.xml), so filter value resource files only. Ignore other types of
+		// resources as they don't need to be in product characteristics RRO (and they will cause aapt2
+		// compile errors)
+		filteredPaths := android.Paths{}
+		for _, path := range paths {
+			if isPathValueResource(path) {
+				filteredPaths = append(filteredPaths, path)
+			}
+		}
+		paths = filteredPaths
+		flags = append([]string{"--filter-product " + productToFilter}, flags...)
+	}
 
 	// Shard the input paths so that they can be processed in parallel. If we shard them into too
 	// small chunks, the additional cost of spinning up aapt2 outweighs the performance gain. The
diff --git a/java/aar.go b/java/aar.go
index 6b89129..e579008 100644
--- a/java/aar.go
+++ b/java/aar.go
@@ -102,6 +102,9 @@
 
 	// true if RRO is enforced for any of the dependent modules
 	RROEnforcedForDependent bool `blueprint:"mutated"`
+
+	// Filter only specified product and ignore other products
+	Filter_product *string `blueprint:"mutated"`
 }
 
 type aapt struct {
@@ -162,6 +165,10 @@
 	return BoolDefault(a.aaptProperties.Use_resource_processor, false)
 }
 
+func (a *aapt) filterProduct() string {
+	return String(a.aaptProperties.Filter_product)
+}
+
 func (a *aapt) ExportPackage() android.Path {
 	return a.exportPackage
 }
@@ -432,7 +439,7 @@
 	var compiledResDirs []android.Paths
 	for _, dir := range resDirs {
 		a.resourceFiles = append(a.resourceFiles, dir.files...)
-		compiledResDirs = append(compiledResDirs, aapt2Compile(ctx, dir.dir, dir.files, compileFlags).Paths())
+		compiledResDirs = append(compiledResDirs, aapt2Compile(ctx, dir.dir, dir.files, compileFlags, a.filterProduct()).Paths())
 	}
 
 	for i, zip := range resZips {
@@ -491,7 +498,7 @@
 	}
 
 	for _, dir := range overlayDirs {
-		compiledOverlay = append(compiledOverlay, aapt2Compile(ctx, dir.dir, dir.files, compileFlags).Paths()...)
+		compiledOverlay = append(compiledOverlay, aapt2Compile(ctx, dir.dir, dir.files, compileFlags, a.filterProduct()).Paths()...)
 	}
 
 	var splitPackages android.WritablePaths
diff --git a/java/androidmk.go b/java/androidmk.go
index 97b303d..84f78c8 100644
--- a/java/androidmk.go
+++ b/java/androidmk.go
@@ -343,10 +343,15 @@
 			Disabled: true,
 		}}
 	}
+	var required []string
+	if proptools.Bool(app.appProperties.Generate_product_characteristics_rro) {
+		required = []string{app.productCharacteristicsRROPackageName()}
+	}
 	return []android.AndroidMkEntries{android.AndroidMkEntries{
 		Class:      "APPS",
 		OutputFile: android.OptionalPathForPath(app.outputFile),
 		Include:    "$(BUILD_SYSTEM)/soong_app_prebuilt.mk",
+		Required:   required,
 		ExtraEntries: []android.AndroidMkExtraEntriesFunc{
 			func(ctx android.AndroidMkExtraEntriesContext, entries *android.AndroidMkEntries) {
 				// App module names can be overridden.
diff --git a/java/app.go b/java/app.go
index 7b9e6bb..6d7411d 100755
--- a/java/app.go
+++ b/java/app.go
@@ -22,6 +22,7 @@
 	"path/filepath"
 	"strings"
 
+	"android/soong/testing"
 	"github.com/google/blueprint"
 	"github.com/google/blueprint/proptools"
 
@@ -130,6 +131,16 @@
 
 	// Specifies the file that contains the allowlist for this app.
 	Privapp_allowlist *string `android:"path"`
+
+	// If set, create an RRO package which contains only resources having PRODUCT_CHARACTERISTICS
+	// and install the RRO package to /product partition, instead of passing --product argument
+	// to aapt2. Default is false.
+	// Setting this will make this APK identical to all targets, regardless of
+	// PRODUCT_CHARACTERISTICS.
+	Generate_product_characteristics_rro *bool
+
+	ProductCharacteristicsRROPackageName        *string `blueprint:"mutated"`
+	ProductCharacteristicsRROManifestModuleName *string `blueprint:"mutated"`
 }
 
 // android_app properties that can be overridden by override_android_app
@@ -454,8 +465,9 @@
 	aaptLinkFlags := []string{}
 
 	// Add TARGET_AAPT_CHARACTERISTICS values to AAPT link flags if they exist and --product flags were not provided.
+	autogenerateRRO := proptools.Bool(a.appProperties.Generate_product_characteristics_rro)
 	hasProduct := android.PrefixInList(a.aaptProperties.Aaptflags, "--product")
-	if !hasProduct && len(ctx.Config().ProductAAPTCharacteristics()) > 0 {
+	if !autogenerateRRO && !hasProduct && len(ctx.Config().ProductAAPTCharacteristics()) > 0 {
 		aaptLinkFlags = append(aaptLinkFlags, "--product", ctx.Config().ProductAAPTCharacteristics())
 	}
 
@@ -857,7 +869,7 @@
 			ctx.InstallFile(allowlistInstallPath, allowlistInstallFilename, a.privAppAllowlist.Path())
 		}
 
-		var extraInstalledPaths android.Paths
+		var extraInstalledPaths android.InstallPaths
 		for _, extra := range a.extraOutputFiles {
 			installed := ctx.InstallFile(a.installDir, extra.Base(), extra)
 			extraInstalledPaths = append(extraInstalledPaths, installed)
@@ -1056,6 +1068,8 @@
 		}
 	case ".export-package.apk":
 		return []android.Path{a.exportPackage}, nil
+	case ".manifest.xml":
+		return []android.Path{a.aapt.manifestPath}, nil
 	}
 	return a.Library.OutputFiles(tag)
 }
@@ -1085,6 +1099,14 @@
 	a.aapt.IDEInfo(dpInfo)
 }
 
+func (a *AndroidApp) productCharacteristicsRROPackageName() string {
+	return proptools.String(a.appProperties.ProductCharacteristicsRROPackageName)
+}
+
+func (a *AndroidApp) productCharacteristicsRROManifestModuleName() string {
+	return proptools.String(a.appProperties.ProductCharacteristicsRROManifestModuleName)
+}
+
 // android_app compiles sources and Android resources into an Android application package `.apk` file.
 func AndroidAppFactory() android.Module {
 	module := &AndroidApp{}
@@ -1111,6 +1133,57 @@
 	android.InitApexModule(module)
 	android.InitBazelModule(module)
 
+	android.AddLoadHook(module, func(ctx android.LoadHookContext) {
+		a := ctx.Module().(*AndroidApp)
+
+		characteristics := ctx.Config().ProductAAPTCharacteristics()
+		if characteristics == "default" || characteristics == "" {
+			module.appProperties.Generate_product_characteristics_rro = nil
+			// no need to create RRO
+			return
+		}
+
+		if !proptools.Bool(module.appProperties.Generate_product_characteristics_rro) {
+			return
+		}
+
+		rroPackageName := a.Name() + "__" + strings.ReplaceAll(characteristics, ",", "_") + "__auto_generated_characteristics_rro"
+		rroManifestName := rroPackageName + "_manifest"
+
+		a.appProperties.ProductCharacteristicsRROPackageName = proptools.StringPtr(rroPackageName)
+		a.appProperties.ProductCharacteristicsRROManifestModuleName = proptools.StringPtr(rroManifestName)
+
+		rroManifestProperties := struct {
+			Name  *string
+			Tools []string
+			Out   []string
+			Srcs  []string
+			Cmd   *string
+		}{
+			Name:  proptools.StringPtr(rroManifestName),
+			Tools: []string{"characteristics_rro_generator"},
+			Out:   []string{"AndroidManifest.xml"},
+			Srcs:  []string{":" + a.Name() + "{.manifest.xml}"},
+			Cmd:   proptools.StringPtr("$(location characteristics_rro_generator) $(in) $(out)"),
+		}
+		ctx.CreateModule(genrule.GenRuleFactory, &rroManifestProperties)
+
+		rroProperties := struct {
+			Name           *string
+			Filter_product *string
+			Aaptflags      []string
+			Manifest       *string
+			Resource_dirs  []string
+		}{
+			Name:           proptools.StringPtr(rroPackageName),
+			Filter_product: proptools.StringPtr(characteristics),
+			Aaptflags:      []string{"--auto-add-overlay"},
+			Manifest:       proptools.StringPtr(":" + rroManifestName),
+			Resource_dirs:  a.aaptProperties.Resource_dirs,
+		}
+		ctx.CreateModule(RuntimeResourceOverlayFactory, &rroProperties)
+	})
+
 	return module
 }
 
@@ -1193,6 +1266,7 @@
 	a.testConfig = a.FixTestConfig(ctx, testConfig)
 	a.extraTestConfigs = android.PathsForModuleSrc(ctx, a.testProperties.Test_options.Extra_test_configs)
 	a.data = android.PathsForModuleSrc(ctx, a.testProperties.Data)
+	ctx.SetProvider(testing.TestModuleProviderKey, testing.TestModuleProviderData{})
 }
 
 func (a *AndroidTest) FixTestConfig(ctx android.ModuleContext, testConfig android.Path) android.Path {
@@ -1584,7 +1658,7 @@
 	// non-linux build platforms where dexpreopt is generally disabled (the check may fail due to
 	// various unrelated reasons, such as a failure to get manifest from an APK).
 	global := dexpreopt.GetGlobalConfig(ctx)
-	if global.DisablePreopt || global.OnlyPreoptBootImageAndSystemServer {
+	if global.DisablePreopt || global.OnlyPreoptArtBootImage {
 		return inputFile
 	}
 
diff --git a/java/base.go b/java/base.go
index 3d7d3de..fdc164e 100644
--- a/java/base.go
+++ b/java/base.go
@@ -497,9 +497,6 @@
 	// list of the xref extraction files
 	kytheFiles android.Paths
 
-	// Collect the module directory for IDE info in java/jdeps.go.
-	modulePaths []string
-
 	hideApexVariantFromMake bool
 
 	sdkVersion    android.SdkSpec
@@ -2015,7 +2012,6 @@
 	if j.expandJarjarRules != nil {
 		dpInfo.Jarjar_rules = append(dpInfo.Jarjar_rules, j.expandJarjarRules.String())
 	}
-	dpInfo.Paths = append(dpInfo.Paths, j.modulePaths...)
 	dpInfo.Static_libs = append(dpInfo.Static_libs, j.properties.Static_libs...)
 	dpInfo.Libs = append(dpInfo.Libs, j.properties.Libs...)
 	dpInfo.SrcJars = append(dpInfo.SrcJars, j.annoSrcJars.Strings()...)
diff --git a/java/bootclasspath_fragment.go b/java/bootclasspath_fragment.go
index 7d8a9f7..191a65e 100644
--- a/java/bootclasspath_fragment.go
+++ b/java/bootclasspath_fragment.go
@@ -23,6 +23,7 @@
 
 	"android/soong/android"
 	"android/soong/dexpreopt"
+	"android/soong/testing"
 
 	"github.com/google/blueprint/proptools"
 
@@ -238,9 +239,6 @@
 
 	sourceOnlyProperties SourceOnlyBootclasspathProperties
 
-	// Collect the module directory for IDE info in java/jdeps.go.
-	modulePaths []string
-
 	// Path to the boot image profile.
 	profilePath android.WritablePath
 }
@@ -471,9 +469,6 @@
 	// Generate classpaths.proto config
 	b.generateClasspathProtoBuildActions(ctx)
 
-	// Collect the module directory for IDE info in java/jdeps.go.
-	b.modulePaths = append(b.modulePaths, ctx.ModuleDir())
-
 	// Gather the bootclasspath fragment's contents.
 	var contents []android.Module
 	ctx.VisitDirectDeps(func(module android.Module) {
@@ -505,6 +500,7 @@
 	if ctx.Module() != ctx.FinalModule() {
 		b.HideFromMake()
 	}
+	ctx.SetProvider(testing.TestModuleProviderKey, testing.TestModuleProviderData{})
 }
 
 // getProfileProviderApex returns the name of the apex that provides a boot image profile, or an
@@ -582,7 +578,7 @@
 		// So ignore it even if it is not in PRODUCT_APEX_BOOT_JARS.
 		// TODO(b/202896428): Add better way to handle this.
 		_, unknown = android.RemoveFromList("android.car-module", unknown)
-		if len(unknown) > 0 {
+		if isActiveModule(ctx.Module()) && len(unknown) > 0 {
 			ctx.ModuleErrorf("%s in contents must also be declared in PRODUCT_APEX_BOOT_JARS", unknown)
 		}
 	}
@@ -801,7 +797,6 @@
 // Collect information for opening IDE project files in java/jdeps.go.
 func (b *BootclasspathFragmentModule) IDEInfo(dpInfo *android.IdeInfo) {
 	dpInfo.Deps = append(dpInfo.Deps, b.properties.Contents...)
-	dpInfo.Paths = append(dpInfo.Paths, b.modulePaths...)
 }
 
 type bootclasspathFragmentMemberType struct {
diff --git a/java/dexpreopt_bootjars.go b/java/dexpreopt_bootjars.go
index c0f73af..5fb36df 100644
--- a/java/dexpreopt_bootjars.go
+++ b/java/dexpreopt_bootjars.go
@@ -610,7 +610,8 @@
 	profile := bootImageProfileRule(ctx, imageConfig)
 
 	// If dexpreopt of boot image jars should be skipped, stop after generating a profile.
-	if SkipDexpreoptBootJars(ctx) {
+	global := dexpreopt.GetGlobalConfig(ctx)
+	if SkipDexpreoptBootJars(ctx) || (global.OnlyPreoptArtBootImage && imageConfig.name != "art") {
 		return
 	}
 
diff --git a/java/dexpreopt_check.go b/java/dexpreopt_check.go
index 7499481..33be603 100644
--- a/java/dexpreopt_check.go
+++ b/java/dexpreopt_check.go
@@ -68,7 +68,7 @@
 
 	// The check should be skipped on unbundled builds because system server jars are not preopted on
 	// unbundled builds since the artifacts are installed into the system image, not the APEXes.
-	if global.DisablePreopt || len(targets) == 0 || ctx.Config().UnbundledBuild() {
+	if global.DisablePreopt || global.OnlyPreoptArtBootImage || len(targets) == 0 || ctx.Config().UnbundledBuild() {
 		return
 	}
 
diff --git a/java/java.go b/java/java.go
index dd04188..bb9357c 100644
--- a/java/java.go
+++ b/java/java.go
@@ -27,6 +27,7 @@
 	"android/soong/bazel"
 	"android/soong/bazel/cquery"
 	"android/soong/remoteexec"
+	"android/soong/testing"
 	"android/soong/ui/metrics/bp2build_metrics_proto"
 
 	"github.com/google/blueprint"
@@ -640,7 +641,7 @@
 
 	exportedProguardFlagFiles android.Paths
 
-	InstallMixin func(ctx android.ModuleContext, installPath android.Path) (extraInstallDeps android.Paths)
+	InstallMixin func(ctx android.ModuleContext, installPath android.Path) (extraInstallDeps android.InstallPaths)
 }
 
 var _ android.ApexModule = (*Library)(nil)
@@ -719,12 +720,9 @@
 	}
 	j.compile(ctx, nil, nil, nil)
 
-	// Collect the module directory for IDE info in java/jdeps.go.
-	j.modulePaths = append(j.modulePaths, ctx.ModuleDir())
-
 	exclusivelyForApex := !apexInfo.IsForPlatform()
 	if (Bool(j.properties.Installable) || ctx.Host()) && !exclusivelyForApex {
-		var extraInstallDeps android.Paths
+		var extraInstallDeps android.InstallPaths
 		if j.InstallMixin != nil {
 			extraInstallDeps = j.InstallMixin(ctx, j.outputFile)
 		}
@@ -1228,10 +1226,12 @@
 	}
 
 	j.Test.generateAndroidBuildActionsWithConfig(ctx, configs)
+	ctx.SetProvider(testing.TestModuleProviderKey, testing.TestModuleProviderData{})
 }
 
 func (j *Test) GenerateAndroidBuildActions(ctx android.ModuleContext) {
 	j.generateAndroidBuildActionsWithConfig(ctx, nil)
+	ctx.SetProvider(testing.TestModuleProviderKey, testing.TestModuleProviderData{})
 }
 
 func (j *Test) generateAndroidBuildActionsWithConfig(ctx android.ModuleContext, configs []tradefed.Config) {
diff --git a/java/jdeps.go b/java/jdeps.go
index 4c8c11c..7e3a14f 100644
--- a/java/jdeps.go
+++ b/java/jdeps.go
@@ -75,7 +75,7 @@
 		dpInfo.Jarjar_rules = android.FirstUniqueStrings(dpInfo.Jarjar_rules)
 		dpInfo.Jars = android.FirstUniqueStrings(dpInfo.Jars)
 		dpInfo.SrcJars = android.FirstUniqueStrings(dpInfo.SrcJars)
-		dpInfo.Paths = android.FirstUniqueStrings(dpInfo.Paths)
+		dpInfo.Paths = []string{ctx.ModuleDir(module)}
 		dpInfo.Static_libs = android.FirstUniqueStrings(dpInfo.Static_libs)
 		dpInfo.Libs = android.FirstUniqueStrings(dpInfo.Libs)
 		moduleInfos[name] = dpInfo
diff --git a/java/resourceshrinker.go b/java/resourceshrinker.go
index bf1b04d..af13aa3 100644
--- a/java/resourceshrinker.go
+++ b/java/resourceshrinker.go
@@ -23,7 +23,8 @@
 var shrinkResources = pctx.AndroidStaticRule("shrinkResources",
 	blueprint.RuleParams{
 		// Note that we suppress stdout to avoid successful log confirmations.
-		Command:     `${config.ResourceShrinkerCmd} --output $out --input $in --raw_resources $raw_resources >/dev/null`,
+		Command: `RESOURCESHRINKER_OPTS=-Dcom.android.tools.r8.dexContainerExperiment ` +
+			`${config.ResourceShrinkerCmd} --output $out --input $in --raw_resources $raw_resources >/dev/null`,
 		CommandDeps: []string{"${config.ResourceShrinkerCmd}"},
 	}, "raw_resources")
 
diff --git a/java/robolectric.go b/java/robolectric.go
index af56339..a66b310 100644
--- a/java/robolectric.go
+++ b/java/robolectric.go
@@ -22,6 +22,7 @@
 
 	"android/soong/android"
 	"android/soong/java/config"
+	"android/soong/testing"
 	"android/soong/tradefed"
 
 	"github.com/google/blueprint/proptools"
@@ -225,7 +226,7 @@
 	}
 
 	installPath := android.PathForModuleInstall(ctx, r.BaseModuleName())
-	var installDeps android.Paths
+	var installDeps android.InstallPaths
 
 	if r.manifest != nil {
 		r.data = append(r.data, r.manifest)
@@ -253,6 +254,7 @@
 	}
 
 	r.installFile = ctx.InstallFile(installPath, ctx.ModuleName()+".jar", r.combinedJar, installDeps...)
+	ctx.SetProvider(testing.TestModuleProviderKey, testing.TestModuleProviderData{})
 }
 
 func generateRoboTestConfig(ctx android.ModuleContext, outputFile android.WritablePath,
diff --git a/java/sdk_library.go b/java/sdk_library.go
index ea45174..fb27812 100644
--- a/java/sdk_library.go
+++ b/java/sdk_library.go
@@ -624,6 +624,13 @@
 		Legacy_errors_allowed *bool
 	}
 
+	// Determines if the module contributes to any api surfaces.
+	// This property should be set to true only if the module is listed under
+	// frameworks-base-api.bootclasspath in frameworks/base/api/Android.bp.
+	// Otherwise, this property should be set to false.
+	// Defaults to false.
+	Contribute_to_android_api *bool
+
 	// TODO: determines whether to create HTML doc or not
 	// Html_doc *bool
 }
@@ -1966,6 +1973,10 @@
 	return module.uniqueApexVariations()
 }
 
+func (module *SdkLibrary) ContributeToApi() bool {
+	return proptools.BoolDefault(module.sdkLibraryProperties.Contribute_to_android_api, false)
+}
+
 // Creates the xml file that publicizes the runtime library
 func (module *SdkLibrary) createXmlFile(mctx android.DefaultableHookContext) {
 	moduleMinApiLevel := module.Library.MinSdkVersion(mctx)
diff --git a/java/sdk_library_test.go b/java/sdk_library_test.go
index 21f0bab..82f8a4d 100644
--- a/java/sdk_library_test.go
+++ b/java/sdk_library_test.go
@@ -1068,6 +1068,137 @@
 	})
 }
 
+// If a module is listed in `mainline_module_contributions, it should be used
+// It will supersede any other source vs prebuilt selection mechanism like `prefer` attribute
+func TestSdkLibraryImport_MetadataModuleSupersedesPreferred(t *testing.T) {
+	bp := `
+		apex_contributions {
+			name: "my_mainline_module_contributions",
+			api_domain: "my_mainline_module",
+			contents: [
+				// legacy mechanism prefers the prebuilt
+				// mainline_module_contributions supersedes this since source is listed explicitly
+				"sdklib.prebuilt_preferred_using_legacy_flags",
+
+				// legacy mechanism prefers the source
+				// mainline_module_contributions supersedes this since prebuilt is listed explicitly
+				"prebuilt_sdklib.source_preferred_using_legacy_flags",
+			],
+		}
+		all_apex_contributions {
+			name: "all_apex_contributions",
+		}
+		java_sdk_library {
+			name: "sdklib.prebuilt_preferred_using_legacy_flags",
+			srcs: ["a.java"],
+			sdk_version: "none",
+			system_modules: "none",
+			public: {
+				enabled: true,
+			},
+			system: {
+				enabled: true,
+			}
+		}
+		java_sdk_library_import {
+			name: "sdklib.prebuilt_preferred_using_legacy_flags",
+			prefer: true, // prebuilt is preferred using legacy mechanism
+			public: {
+				jars: ["a.jar"],
+				stub_srcs: ["a.java"],
+				current_api: "current.txt",
+				removed_api: "removed.txt",
+				annotations: "annotations.zip",
+			},
+			system: {
+				jars: ["a.jar"],
+				stub_srcs: ["a.java"],
+				current_api: "current.txt",
+				removed_api: "removed.txt",
+				annotations: "annotations.zip",
+			},
+		}
+		java_sdk_library {
+			name: "sdklib.source_preferred_using_legacy_flags",
+			srcs: ["a.java"],
+			sdk_version: "none",
+			system_modules: "none",
+			public: {
+				enabled: true,
+			},
+			system: {
+				enabled: true,
+			}
+		}
+		java_sdk_library_import {
+			name: "sdklib.source_preferred_using_legacy_flags",
+			prefer: false, // source is preferred using legacy mechanism
+			public: {
+				jars: ["a.jar"],
+				stub_srcs: ["a.java"],
+				current_api: "current.txt",
+				removed_api: "removed.txt",
+				annotations: "annotations.zip",
+			},
+			system: {
+				jars: ["a.jar"],
+				stub_srcs: ["a.java"],
+				current_api: "current.txt",
+				removed_api: "removed.txt",
+				annotations: "annotations.zip",
+			},
+		}
+
+		// rdeps
+		java_library {
+			name: "public",
+			srcs: ["a.java"],
+			libs: [
+				// this should get source since source is listed in my_mainline_module_contributions
+				"sdklib.prebuilt_preferred_using_legacy_flags.stubs",
+				"sdklib.prebuilt_preferred_using_legacy_flags.stubs.system",
+
+				// this should get prebuilt since source is listed in my_mainline_module_contributions
+				"sdklib.source_preferred_using_legacy_flags.stubs",
+				"sdklib.source_preferred_using_legacy_flags.stubs.system",
+
+			],
+		}
+	`
+	result := android.GroupFixturePreparers(
+		prepareForJavaTest,
+		PrepareForTestWithJavaSdkLibraryFiles,
+		FixtureWithLastReleaseApis("sdklib.source_preferred_using_legacy_flags", "sdklib.prebuilt_preferred_using_legacy_flags"),
+		android.FixtureRegisterWithContext(func(ctx android.RegistrationContext) {
+			android.RegisterApexContributionsBuildComponents(ctx)
+		}),
+		android.FixtureModifyProductVariables(func(variables android.FixtureProductVariables) {
+			variables.BuildFlags = map[string]string{
+				"RELEASE_APEX_CONTRIBUTIONS_ADSERVICES": "my_mainline_module_contributions",
+			}
+		}),
+	).RunTestWithBp(t, bp)
+
+	// Make sure that rdeps get the correct source vs prebuilt based on mainline_module_contributions
+	public := result.ModuleForTests("public", "android_common")
+	rule := public.Output("javac/public.jar")
+	inputs := rule.Implicits.Strings()
+	expectedInputs := []string{
+		// source
+		"out/soong/.intermediates/sdklib.prebuilt_preferred_using_legacy_flags.stubs/android_common/turbine-combined/sdklib.prebuilt_preferred_using_legacy_flags.stubs.jar",
+		"out/soong/.intermediates/sdklib.prebuilt_preferred_using_legacy_flags.stubs.system/android_common/turbine-combined/sdklib.prebuilt_preferred_using_legacy_flags.stubs.system.jar",
+
+		// prebuilt
+		"out/soong/.intermediates/prebuilt_sdklib.source_preferred_using_legacy_flags.stubs/android_common/combined/sdklib.source_preferred_using_legacy_flags.stubs.jar",
+		"out/soong/.intermediates/prebuilt_sdklib.source_preferred_using_legacy_flags.stubs.system/android_common/combined/sdklib.source_preferred_using_legacy_flags.stubs.system.jar",
+	}
+	for _, expected := range expectedInputs {
+		if !android.InList(expected, inputs) {
+			t.Errorf("expected %q to contain %q", inputs, expected)
+		}
+	}
+}
+
 func TestJavaSdkLibraryEnforce(t *testing.T) {
 	partitionToBpOption := func(partition string) string {
 		switch partition {
diff --git a/java/systemserver_classpath_fragment.go b/java/systemserver_classpath_fragment.go
index 17d301b..30dd55f 100644
--- a/java/systemserver_classpath_fragment.go
+++ b/java/systemserver_classpath_fragment.go
@@ -87,9 +87,6 @@
 	ClasspathFragmentBase
 
 	properties systemServerClasspathFragmentProperties
-
-	// Collect the module directory for IDE info in java/jdeps.go.
-	modulePaths []string
 }
 
 func (s *SystemServerClasspathModule) ShouldSupportSdkVersion(ctx android.BaseModuleContext, sdkVersion android.ApiLevel) error {
@@ -129,9 +126,6 @@
 	configuredJars = configuredJars.AppendList(&standaloneConfiguredJars)
 	classpathJars = append(classpathJars, standaloneClasspathJars...)
 	s.classpathFragmentBase().generateClasspathProtoBuildActions(ctx, configuredJars, classpathJars)
-
-	// Collect the module directory for IDE info in java/jdeps.go.
-	s.modulePaths = append(s.modulePaths, ctx.ModuleDir())
 }
 
 func (s *SystemServerClasspathModule) configuredJars(ctx android.ModuleContext) android.ConfiguredJarList {
@@ -242,7 +236,6 @@
 func (s *SystemServerClasspathModule) IDEInfo(dpInfo *android.IdeInfo) {
 	dpInfo.Deps = append(dpInfo.Deps, s.properties.Contents...)
 	dpInfo.Deps = append(dpInfo.Deps, s.properties.Standalone_contents...)
-	dpInfo.Paths = append(dpInfo.Paths, s.modulePaths...)
 }
 
 type systemServerClasspathFragmentMemberType struct {
diff --git a/java/test_spec_test.go b/java/test_spec_test.go
new file mode 100644
index 0000000..39aff4c
--- /dev/null
+++ b/java/test_spec_test.go
@@ -0,0 +1,133 @@
+package java
+
+import (
+	"strings"
+	"testing"
+
+	"android/soong/android"
+	soongTesting "android/soong/testing"
+	"android/soong/testing/test_spec_proto"
+	"google.golang.org/protobuf/proto"
+)
+
+func TestTestSpec(t *testing.T) {
+	bp := `test_spec {
+		name: "module-name",
+		teamId: "12345",
+		tests: [
+			"java-test-module-name-one",
+			"java-test-module-name-two"
+		]
+	}
+
+	java_test {
+		name: "java-test-module-name-one",
+	}
+
+	java_test {
+		name: "java-test-module-name-two",
+	}`
+	result := runTest(t, android.FixtureExpectsNoErrors, bp)
+
+	module := result.ModuleForTests(
+		"module-name", "",
+	).Module().(*soongTesting.TestSpecModule)
+
+	// Check that the provider has the right contents
+	data := result.ModuleProvider(
+		module, soongTesting.TestSpecProviderKey,
+	).(soongTesting.TestSpecProviderData)
+	if !strings.HasSuffix(
+		data.IntermediatePath.String(), "/intermediateTestSpecMetadata.pb",
+	) {
+		t.Errorf(
+			"Missing intermediates path in provider: %s",
+			data.IntermediatePath.String(),
+		)
+	}
+
+	buildParamsSlice := module.BuildParamsForTests()
+	var metadata = ""
+	for _, params := range buildParamsSlice {
+		if params.Rule.String() == "android/soong/android.writeFile" {
+			metadata = params.Args["content"]
+		}
+	}
+
+	metadataList := make([]*test_spec_proto.TestSpec_OwnershipMetadata, 0, 2)
+	teamId := "12345"
+	bpFilePath := "Android.bp"
+	targetNames := []string{
+		"java-test-module-name-one", "java-test-module-name-two",
+	}
+
+	for _, test := range targetNames {
+		targetName := test
+		metadata := test_spec_proto.TestSpec_OwnershipMetadata{
+			TrendyTeamId: &teamId,
+			TargetName:   &targetName,
+			Path:         &bpFilePath,
+		}
+		metadataList = append(metadataList, &metadata)
+	}
+	testSpecMetadata := test_spec_proto.TestSpec{OwnershipMetadataList: metadataList}
+	protoData, _ := proto.Marshal(&testSpecMetadata)
+	rawData := string(protoData)
+	formattedData := strings.ReplaceAll(rawData, "\n", "\\n")
+	expectedMetadata := "'" + formattedData + "\\n'"
+
+	if metadata != expectedMetadata {
+		t.Errorf(
+			"Retrieved metadata: %s is not equal to expectedMetadata: %s", metadata,
+			expectedMetadata,
+		)
+	}
+
+	// Tests for all_test_spec singleton.
+	singleton := result.SingletonForTests("all_test_specs")
+	rule := singleton.Rule("all_test_specs_rule")
+	prebuiltOs := result.Config.PrebuiltOS()
+	expectedCmd := "out/soong/host/" + prebuiltOs + "/bin/metadata -rule test_spec -inputFile out/soong/all_test_spec_paths.rsp -outputFile out/soong/ownership/all_test_specs.pb"
+	expectedOutputFile := "out/soong/ownership/all_test_specs.pb"
+	expectedInputFile := "out/soong/.intermediates/module-name/intermediateTestSpecMetadata.pb"
+	if !strings.Contains(
+		strings.TrimSpace(rule.Output.String()),
+		expectedOutputFile,
+	) {
+		t.Errorf(
+			"Retrieved singletonOutputFile: %s is not equal to expectedSingletonOutputFile: %s",
+			rule.Output.String(), expectedOutputFile,
+		)
+	}
+
+	if !strings.Contains(
+		strings.TrimSpace(rule.Inputs[0].String()),
+		expectedInputFile,
+	) {
+		t.Errorf(
+			"Retrieved singletonInputFile: %s is not equal to expectedSingletonInputFile: %s",
+			rule.Inputs[0].String(), expectedInputFile,
+		)
+	}
+
+	if !strings.Contains(
+		strings.TrimSpace(rule.RuleParams.Command),
+		expectedCmd,
+	) {
+		t.Errorf(
+			"Retrieved cmd: %s is not equal to expectedCmd: %s",
+			rule.RuleParams.Command, expectedCmd,
+		)
+	}
+}
+
+func runTest(
+	t *testing.T, errorHandler android.FixtureErrorHandler, bp string,
+) *android.TestResult {
+	return android.GroupFixturePreparers(
+		soongTesting.PrepareForTestWithTestSpecBuildComponents,
+		PrepareForIntegrationTestWithJava,
+	).
+		ExtendWithErrorHandler(errorHandler).
+		RunTestWithBp(t, bp)
+}
diff --git a/java/tradefed.go b/java/tradefed.go
index ebbdec1..349b327 100644
--- a/java/tradefed.go
+++ b/java/tradefed.go
@@ -30,8 +30,8 @@
 	return module
 }
 
-func tradefedJavaLibraryInstall(ctx android.ModuleContext, path android.Path) android.Paths {
+func tradefedJavaLibraryInstall(ctx android.ModuleContext, path android.Path) android.InstallPaths {
 	installedPath := ctx.InstallFile(android.PathForModuleInstall(ctx, "tradefed"),
 		ctx.ModuleName()+".jar", path)
-	return android.Paths{installedPath}
+	return android.InstallPaths{installedPath}
 }
diff --git a/kernel/prebuilt_kernel_modules.go b/kernel/prebuilt_kernel_modules.go
index 5bcca04..e200ee2 100644
--- a/kernel/prebuilt_kernel_modules.go
+++ b/kernel/prebuilt_kernel_modules.go
@@ -50,6 +50,9 @@
 	// Kernel version that these modules are for. Kernel modules are installed to
 	// /lib/modules/<kernel_version> directory in the corresponding partition. Default is "".
 	Kernel_version *string
+
+	// Whether this module is directly installable to one of the partitions. Default is true
+	Installable *bool
 }
 
 // prebuilt_kernel_modules installs a set of prebuilt kernel module files to the correct directory.
@@ -62,6 +65,10 @@
 	return module
 }
 
+func (pkm *prebuiltKernelModules) installable() bool {
+	return proptools.BoolDefault(pkm.properties.Installable, true)
+}
+
 func (pkm *prebuiltKernelModules) KernelVersion() string {
 	return proptools.StringDefault(pkm.properties.Kernel_version, "")
 }
@@ -71,6 +78,9 @@
 }
 
 func (pkm *prebuiltKernelModules) GenerateAndroidBuildActions(ctx android.ModuleContext) {
+	if !pkm.installable() {
+		pkm.SkipInstall()
+	}
 	modules := android.PathsForModuleSrc(ctx, pkm.properties.Srcs)
 
 	depmodOut := runDepmod(ctx, modules)
diff --git a/python/Android.bp b/python/Android.bp
index 7578673..87810c9 100644
--- a/python/Android.bp
+++ b/python/Android.bp
@@ -10,6 +10,7 @@
         "soong-android",
         "soong-tradefed",
         "soong-cc",
+        "soong-testing",
     ],
     srcs: [
         "binary.go",
diff --git a/python/test.go b/python/test.go
index 6e23a44..cd7c73b 100644
--- a/python/test.go
+++ b/python/test.go
@@ -17,6 +17,7 @@
 import (
 	"fmt"
 
+	"android/soong/testing"
 	"github.com/google/blueprint/proptools"
 
 	"android/soong/android"
@@ -205,6 +206,7 @@
 			p.data = append(p.data, android.DataPath{SrcPath: javaDataSrcPath})
 		}
 	}
+	ctx.SetProvider(testing.TestModuleProviderKey, testing.TestModuleProviderData{})
 }
 
 func (p *PythonTestModule) AndroidMkEntries() []android.AndroidMkEntries {
diff --git a/remoteexec/remoteexec.go b/remoteexec/remoteexec.go
index 690b47b..1e181fb 100644
--- a/remoteexec/remoteexec.go
+++ b/remoteexec/remoteexec.go
@@ -30,7 +30,7 @@
 	// DefaultImage is the default container image used for Android remote execution. The
 	// image was built with the Dockerfile at
 	// https://android.googlesource.com/platform/prebuilts/remoteexecution-client/+/refs/heads/master/docker/Dockerfile
-	DefaultImage = "docker://gcr.io/androidbuild-re-dockerimage/android-build-remoteexec-image@sha256:953fed4a6b2501256a0d17f055dc17884ff71b024e50ade773e0b348a6c303e6"
+	DefaultImage = "docker://gcr.io/androidbuild-re-dockerimage/android-build-remoteexec-image@sha256:1eb7f64b9e17102b970bd7a1af7daaebdb01c3fb777715899ef462d6c6d01a45"
 
 	// DefaultWrapperPath is the default path to the remote execution wrapper.
 	DefaultWrapperPath = "prebuilts/remoteexecution-client/live/rewrapper"
diff --git a/rust/Android.bp b/rust/Android.bp
index b01a94a..c5b2000 100644
--- a/rust/Android.bp
+++ b/rust/Android.bp
@@ -12,6 +12,7 @@
         "soong-cc",
         "soong-rust-config",
         "soong-snapshot",
+        "soong-testing",
     ],
     srcs: [
         "afdo.go",
diff --git a/rust/compiler.go b/rust/compiler.go
index 9afaec5..d453a5d 100644
--- a/rust/compiler.go
+++ b/rust/compiler.go
@@ -203,7 +203,7 @@
 	Relative_install_path *string `android:"arch_variant"`
 
 	// whether to suppress inclusion of standard crates - defaults to false
-	No_stdlibs *bool
+	No_stdlibs *bool `android:"arch_variant"`
 
 	// Change the rustlibs linkage to select rlib linkage by default for device targets.
 	// Also link libstd as an rlib as well on device targets.
diff --git a/rust/rust.go b/rust/rust.go
index d315019..d4d33c7 100644
--- a/rust/rust.go
+++ b/rust/rust.go
@@ -20,6 +20,7 @@
 
 	"android/soong/bazel"
 	"android/soong/bloaty"
+	"android/soong/testing"
 	"android/soong/ui/metrics/bp2build_metrics_proto"
 
 	"github.com/google/blueprint"
@@ -144,8 +145,9 @@
 
 	Properties BaseProperties
 
-	hod      android.HostOrDeviceSupported
-	multilib android.Multilib
+	hod        android.HostOrDeviceSupported
+	multilib   android.Multilib
+	testModule bool
 
 	makeLinkType string
 
@@ -1000,6 +1002,9 @@
 
 		ctx.Phony("rust", ctx.RustModule().OutputFile().Path())
 	}
+	if mod.testModule {
+		ctx.SetProvider(testing.TestModuleProviderKey, testing.TestModuleProviderData{})
+	}
 }
 
 func (mod *Module) deps(ctx DepsContext) Deps {
diff --git a/rust/test.go b/rust/test.go
index 4b5296e..7ffc367 100644
--- a/rust/test.go
+++ b/rust/test.go
@@ -222,11 +222,13 @@
 	// rustTestHostMultilib load hook to set MultilibFirst for the
 	// host target.
 	android.AddLoadHook(module, rustTestHostMultilib)
+	module.testModule = true
 	return module.Init()
 }
 
 func RustTestHostFactory() android.Module {
 	module, _ := NewRustTest(android.HostSupported)
+	module.testModule = true
 	return module.Init()
 }
 
diff --git a/rust/test_test.go b/rust/test_test.go
index 8906f1c..6d0ebcf 100644
--- a/rust/test_test.go
+++ b/rust/test_test.go
@@ -38,7 +38,7 @@
 
 	dataPaths := testingModule.Module().(*Module).compiler.(*testDecorator).dataPaths()
 	if len(dataPaths) != 1 {
-		t.Errorf("expected exactly one test data file. test data files: [%s]", dataPaths)
+		t.Errorf("expected exactly one test data file. test data files: [%v]", dataPaths)
 		return
 	}
 }
@@ -116,7 +116,7 @@
 		t.Fatalf("expected exactly one output file. output files: [%s]", outputFiles)
 	}
 	if len(testBinary.dataPaths()) != 2 {
-		t.Fatalf("expected exactly two test data files. test data files: [%s]", testBinary.dataPaths())
+		t.Fatalf("expected exactly two test data files. test data files: [%v]", testBinary.dataPaths())
 	}
 
 	outputPath := outputFiles[0].String()
@@ -178,7 +178,7 @@
 		t.Fatalf("expected exactly one output file. output files: [%s]", outputFiles)
 	}
 	if len(testBinary.dataPaths()) != 3 {
-		t.Fatalf("expected exactly two test data files. test data files: [%s]", testBinary.dataPaths())
+		t.Fatalf("expected exactly two test data files. test data files: [%v]", testBinary.dataPaths())
 	}
 
 	outputPath := outputFiles[0].String()
diff --git a/scripts/build-ndk-prebuilts.sh b/scripts/build-ndk-prebuilts.sh
index 0d14019..ef0f44a 100755
--- a/scripts/build-ndk-prebuilts.sh
+++ b/scripts/build-ndk-prebuilts.sh
@@ -19,9 +19,11 @@
     exit 1
 fi
 
+# Note: NDK doesn't support flagging APIs, so we hardcode it to trunk_staging.
 # TODO: remove ALLOW_MISSING_DEPENDENCIES=true when all the riscv64
 # dependencies exist (currently blocked by http://b/273792258).
 # TODO: remove BUILD_BROKEN_DISABLE_BAZEL=1 when bazel supports riscv64 (http://b/262192655).
+TARGET_RELEASE=trunk_staging \
 ALLOW_MISSING_DEPENDENCIES=true \
 BUILD_BROKEN_DISABLE_BAZEL=1 \
     TARGET_PRODUCT=ndk build/soong/soong_ui.bash --make-mode --soong-only ${OUT_DIR}/soong/ndk.timestamp
diff --git a/scripts/conv_linker_config.py b/scripts/conv_linker_config.py
index c6e6e30..ed3fbb7 100644
--- a/scripts/conv_linker_config.py
+++ b/scripts/conv_linker_config.py
@@ -149,6 +149,11 @@
     else:
         sys.exit(f'Unknown type: {args.type}')
 
+    # Reject contributions field at build time while keeping the runtime behavior for GRF.
+    if getattr(pb, 'contributions'):
+        sys.exit(f"{args.input}: 'contributions' is set. "
+                 "It's deprecated. Instead, make the APEX 'visible' and use android_dlopen_ext().")
+
 
 def ValidateAndWriteAsPbFile(pb, output_path):
     ValidateConfiguration(pb)
diff --git a/sh/Android.bp b/sh/Android.bp
index 1deedc7..930fcf5 100644
--- a/sh/Android.bp
+++ b/sh/Android.bp
@@ -11,6 +11,7 @@
         "soong-android",
         "soong-cc",
         "soong-java",
+        "soong-testing",
         "soong-tradefed",
     ],
     srcs: [
diff --git a/sh/sh_binary.go b/sh/sh_binary.go
index 2e869f4..1bebc60 100644
--- a/sh/sh_binary.go
+++ b/sh/sh_binary.go
@@ -20,6 +20,7 @@
 	"sort"
 	"strings"
 
+	"android/soong/testing"
 	"github.com/google/blueprint"
 	"github.com/google/blueprint/proptools"
 
@@ -452,6 +453,7 @@
 			ctx.PropertyErrorf(property, "%q of type %q is not supported", dep.Name(), ctx.OtherModuleType(dep))
 		}
 	})
+	ctx.SetProvider(testing.TestModuleProviderKey, testing.TestModuleProviderData{})
 }
 
 func (s *ShTest) InstallInData() bool {
diff --git a/testing/Android.bp b/testing/Android.bp
new file mode 100644
index 0000000..18dccb3
--- /dev/null
+++ b/testing/Android.bp
@@ -0,0 +1,21 @@
+package {
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+bootstrap_go_package {
+    name: "soong-testing",
+    pkgPath: "android/soong/testing",
+    deps: [
+        "blueprint",
+        "soong-android",
+        "soong-testing-test_spec_proto",
+
+    ],
+    srcs: [
+        "all_test_specs.go",
+        "test_spec.go",
+        "init.go",
+        "test.go",
+    ],
+    pluginFor: ["soong_build"],
+}
diff --git a/testing/all_test_specs.go b/testing/all_test_specs.go
new file mode 100644
index 0000000..9d4645b
--- /dev/null
+++ b/testing/all_test_specs.go
@@ -0,0 +1,45 @@
+package testing
+
+import (
+	"android/soong/android"
+)
+
+const ownershipDirectory = "ownership"
+const fileContainingFilePaths = "all_test_spec_paths.rsp"
+const allTestSpecsFile = "all_test_specs.pb"
+
+func AllTestSpecsFactory() android.Singleton {
+	return &allTestSpecsSingleton{}
+}
+
+type allTestSpecsSingleton struct {
+	// Path where the collected metadata is stored after successful validation.
+	outputPath android.OutputPath
+}
+
+func (this *allTestSpecsSingleton) GenerateBuildActions(ctx android.SingletonContext) {
+	var intermediateMetadataPaths android.Paths
+
+	ctx.VisitAllModules(func(module android.Module) {
+		if !ctx.ModuleHasProvider(module, TestSpecProviderKey) {
+			return
+		}
+		intermediateMetadataPaths = append(intermediateMetadataPaths, ctx.ModuleProvider(module, TestSpecProviderKey).(TestSpecProviderData).IntermediatePath)
+	})
+
+	rspFile := android.PathForOutput(ctx, fileContainingFilePaths)
+	this.outputPath = android.PathForOutput(ctx, ownershipDirectory, allTestSpecsFile)
+
+	rule := android.NewRuleBuilder(pctx, ctx)
+	cmd := rule.Command().
+		BuiltTool("metadata").
+		FlagWithArg("-rule ", "test_spec").
+		FlagWithRspFileInputList("-inputFile ", rspFile, intermediateMetadataPaths)
+	cmd.FlagWithOutput("-outputFile ", this.outputPath)
+	rule.Build("all_test_specs_rule", "Generate all test specifications")
+	ctx.Phony("all_test_specs", this.outputPath)
+}
+
+func (this *allTestSpecsSingleton) MakeVars(ctx android.MakeVarsContext) {
+	ctx.DistForGoal("test_specs", this.outputPath)
+}
diff --git a/testing/init.go b/testing/init.go
new file mode 100644
index 0000000..206b430
--- /dev/null
+++ b/testing/init.go
@@ -0,0 +1,33 @@
+// Copyright 2022 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package testing
+
+import (
+	"android/soong/android"
+)
+
+var (
+	pctx = android.NewPackageContext("android/soong/testing")
+)
+
+func init() {
+	RegisterBuildComponents(android.InitRegistrationContext)
+	pctx.HostBinToolVariable("metadata", "metadata")
+}
+
+func RegisterBuildComponents(ctx android.RegistrationContext) {
+	ctx.RegisterModuleType("test_spec", TestSpecFactory)
+	ctx.RegisterParallelSingletonType("all_test_specs", AllTestSpecsFactory)
+}
diff --git a/testing/test.go b/testing/test.go
new file mode 100644
index 0000000..44824e4
--- /dev/null
+++ b/testing/test.go
@@ -0,0 +1,21 @@
+// Copyright 2023 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package testing
+
+import (
+	"android/soong/android"
+)
+
+var PrepareForTestWithTestSpecBuildComponents = android.FixtureRegisterWithContext(RegisterBuildComponents)
diff --git a/testing/test_spec.go b/testing/test_spec.go
new file mode 100644
index 0000000..c370f71
--- /dev/null
+++ b/testing/test_spec.go
@@ -0,0 +1,127 @@
+// Copyright 2020 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package testing
+
+import (
+	"path/filepath"
+	"strconv"
+
+	"android/soong/android"
+	"android/soong/testing/test_spec_proto"
+	"github.com/google/blueprint"
+	"google.golang.org/protobuf/proto"
+)
+
+// ErrTestModuleDataNotFound is the error message for missing test module provider data.
+const ErrTestModuleDataNotFound = "The module '%s' does not provide test specification data. Hint: This issue could arise if either the module is not a valid testing module or if it lacks the required 'TestModuleProviderKey' provider.\n"
+
+func TestSpecFactory() android.Module {
+	module := &TestSpecModule{}
+
+	android.InitAndroidModule(module)
+	android.InitDefaultableModule(module)
+	module.AddProperties(&module.properties)
+
+	return module
+}
+
+type TestSpecModule struct {
+	android.ModuleBase
+	android.DefaultableModuleBase
+	android.BazelModuleBase
+
+	// Properties for "test_spec"
+	properties struct {
+		// Specifies the name of the test config.
+		Name string
+		// Specifies the team ID.
+		TeamId string
+		// Specifies the list of tests covered under this module.
+		Tests []string
+	}
+}
+
+type testsDepTagType struct {
+	blueprint.BaseDependencyTag
+}
+
+var testsDepTag = testsDepTagType{}
+
+func (module *TestSpecModule) DepsMutator(ctx android.BottomUpMutatorContext) {
+	// Validate Properties
+	if len(module.properties.TeamId) == 0 {
+		ctx.PropertyErrorf("TeamId", "Team Id not found in the test_spec module. Hint: Maybe the TeamId property hasn't been properly specified.")
+	}
+	if !isInt(module.properties.TeamId) {
+		ctx.PropertyErrorf("TeamId", "Invalid value for Team ID. The Team ID must be an integer.")
+	}
+	if len(module.properties.Tests) == 0 {
+		ctx.PropertyErrorf("Tests", "Expected to attribute some test but none found. Hint: Maybe the test property hasn't been properly specified.")
+	}
+	ctx.AddDependency(ctx.Module(), testsDepTag, module.properties.Tests...)
+}
+func isInt(s string) bool {
+	_, err := strconv.Atoi(s)
+	return err == nil
+}
+
+// Provider published by TestSpec
+type TestSpecProviderData struct {
+	IntermediatePath android.WritablePath
+}
+
+var TestSpecProviderKey = blueprint.NewProvider(TestSpecProviderData{})
+
+type TestModuleProviderData struct {
+}
+
+var TestModuleProviderKey = blueprint.NewProvider(TestModuleProviderData{})
+
+func (module *TestSpecModule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
+	for _, m := range ctx.GetDirectDepsWithTag(testsDepTag) {
+		if !ctx.OtherModuleHasProvider(m, TestModuleProviderKey) {
+			ctx.ModuleErrorf(ErrTestModuleDataNotFound, m.Name())
+		}
+	}
+	bpFilePath := filepath.Join(ctx.ModuleDir(), ctx.BlueprintsFile())
+	metadataList := make(
+		[]*test_spec_proto.TestSpec_OwnershipMetadata, 0,
+		len(module.properties.Tests),
+	)
+	for _, test := range module.properties.Tests {
+		targetName := test
+		metadata := test_spec_proto.TestSpec_OwnershipMetadata{
+			TrendyTeamId: &module.properties.TeamId,
+			TargetName:   &targetName,
+			Path:         &bpFilePath,
+		}
+		metadataList = append(metadataList, &metadata)
+	}
+	intermediatePath := android.PathForModuleOut(
+		ctx, "intermediateTestSpecMetadata.pb",
+	)
+	testSpecMetadata := test_spec_proto.TestSpec{OwnershipMetadataList: metadataList}
+	protoData, err := proto.Marshal(&testSpecMetadata)
+	if err != nil {
+		ctx.ModuleErrorf("Error: %s", err.Error())
+	}
+	android.WriteFileRule(ctx, intermediatePath, string(protoData))
+
+	ctx.SetProvider(
+		TestSpecProviderKey, TestSpecProviderData{
+			IntermediatePath: intermediatePath,
+		},
+	)
+}
diff --git a/testing/test_spec_proto/Android.bp b/testing/test_spec_proto/Android.bp
new file mode 100644
index 0000000..1cac492
--- /dev/null
+++ b/testing/test_spec_proto/Android.bp
@@ -0,0 +1,29 @@
+// Copyright 2022 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package {
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+bootstrap_go_package {
+    name: "soong-testing-test_spec_proto",
+    pkgPath: "android/soong/testing/test_spec_proto",
+    deps: [
+            "golang-protobuf-reflect-protoreflect",
+            "golang-protobuf-runtime-protoimpl",
+        ],
+    srcs: [
+        "test_spec.pb.go",
+    ],
+}
diff --git a/testing/test_spec_proto/OWNERS b/testing/test_spec_proto/OWNERS
new file mode 100644
index 0000000..03bcdf1
--- /dev/null
+++ b/testing/test_spec_proto/OWNERS
@@ -0,0 +1,4 @@
+dariofreni@google.com
+joeo@google.com
+ronish@google.com
+caditya@google.com
diff --git a/testing/test_spec_proto/regen.sh b/testing/test_spec_proto/regen.sh
new file mode 100644
index 0000000..2cf8203
--- /dev/null
+++ b/testing/test_spec_proto/regen.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+
+aprotoc --go_out=paths=source_relative:. test_spec.proto
diff --git a/testing/test_spec_proto/test_spec.pb.go b/testing/test_spec_proto/test_spec.pb.go
new file mode 100644
index 0000000..5cce600
--- /dev/null
+++ b/testing/test_spec_proto/test_spec.pb.go
@@ -0,0 +1,244 @@
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.30.0
+// 	protoc        v3.21.12
+// source: test_spec.proto
+
+package test_spec_proto
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type TestSpec struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// List of all test targets and their metadata.
+	OwnershipMetadataList []*TestSpec_OwnershipMetadata `protobuf:"bytes,1,rep,name=ownership_metadata_list,json=ownershipMetadataList" json:"ownership_metadata_list,omitempty"`
+}
+
+func (x *TestSpec) Reset() {
+	*x = TestSpec{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_test_spec_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *TestSpec) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*TestSpec) ProtoMessage() {}
+
+func (x *TestSpec) ProtoReflect() protoreflect.Message {
+	mi := &file_test_spec_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use TestSpec.ProtoReflect.Descriptor instead.
+func (*TestSpec) Descriptor() ([]byte, []int) {
+	return file_test_spec_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *TestSpec) GetOwnershipMetadataList() []*TestSpec_OwnershipMetadata {
+	if x != nil {
+		return x.OwnershipMetadataList
+	}
+	return nil
+}
+
+type TestSpec_OwnershipMetadata struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	TargetName   *string `protobuf:"bytes,1,opt,name=target_name,json=targetName" json:"target_name,omitempty"`
+	Path         *string `protobuf:"bytes,2,opt,name=path" json:"path,omitempty"`
+	TrendyTeamId *string `protobuf:"bytes,3,opt,name=trendy_team_id,json=trendyTeamId" json:"trendy_team_id,omitempty"`
+}
+
+func (x *TestSpec_OwnershipMetadata) Reset() {
+	*x = TestSpec_OwnershipMetadata{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_test_spec_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *TestSpec_OwnershipMetadata) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*TestSpec_OwnershipMetadata) ProtoMessage() {}
+
+func (x *TestSpec_OwnershipMetadata) ProtoReflect() protoreflect.Message {
+	mi := &file_test_spec_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use TestSpec_OwnershipMetadata.ProtoReflect.Descriptor instead.
+func (*TestSpec_OwnershipMetadata) Descriptor() ([]byte, []int) {
+	return file_test_spec_proto_rawDescGZIP(), []int{0, 0}
+}
+
+func (x *TestSpec_OwnershipMetadata) GetTargetName() string {
+	if x != nil && x.TargetName != nil {
+		return *x.TargetName
+	}
+	return ""
+}
+
+func (x *TestSpec_OwnershipMetadata) GetPath() string {
+	if x != nil && x.Path != nil {
+		return *x.Path
+	}
+	return ""
+}
+
+func (x *TestSpec_OwnershipMetadata) GetTrendyTeamId() string {
+	if x != nil && x.TrendyTeamId != nil {
+		return *x.TrendyTeamId
+	}
+	return ""
+}
+
+var File_test_spec_proto protoreflect.FileDescriptor
+
+var file_test_spec_proto_rawDesc = []byte{
+	0x0a, 0x0f, 0x74, 0x65, 0x73, 0x74, 0x5f, 0x73, 0x70, 0x65, 0x63, 0x2e, 0x70, 0x72, 0x6f, 0x74,
+	0x6f, 0x12, 0x0f, 0x74, 0x65, 0x73, 0x74, 0x5f, 0x73, 0x70, 0x65, 0x63, 0x5f, 0x70, 0x72, 0x6f,
+	0x74, 0x6f, 0x22, 0xdf, 0x01, 0x0a, 0x08, 0x54, 0x65, 0x73, 0x74, 0x53, 0x70, 0x65, 0x63, 0x12,
+	0x63, 0x0a, 0x17, 0x6f, 0x77, 0x6e, 0x65, 0x72, 0x73, 0x68, 0x69, 0x70, 0x5f, 0x6d, 0x65, 0x74,
+	0x61, 0x64, 0x61, 0x74, 0x61, 0x5f, 0x6c, 0x69, 0x73, 0x74, 0x18, 0x01, 0x20, 0x03, 0x28, 0x0b,
+	0x32, 0x2b, 0x2e, 0x74, 0x65, 0x73, 0x74, 0x5f, 0x73, 0x70, 0x65, 0x63, 0x5f, 0x70, 0x72, 0x6f,
+	0x74, 0x6f, 0x2e, 0x54, 0x65, 0x73, 0x74, 0x53, 0x70, 0x65, 0x63, 0x2e, 0x4f, 0x77, 0x6e, 0x65,
+	0x72, 0x73, 0x68, 0x69, 0x70, 0x4d, 0x65, 0x74, 0x61, 0x64, 0x61, 0x74, 0x61, 0x52, 0x15, 0x6f,
+	0x77, 0x6e, 0x65, 0x72, 0x73, 0x68, 0x69, 0x70, 0x4d, 0x65, 0x74, 0x61, 0x64, 0x61, 0x74, 0x61,
+	0x4c, 0x69, 0x73, 0x74, 0x1a, 0x6e, 0x0a, 0x11, 0x4f, 0x77, 0x6e, 0x65, 0x72, 0x73, 0x68, 0x69,
+	0x70, 0x4d, 0x65, 0x74, 0x61, 0x64, 0x61, 0x74, 0x61, 0x12, 0x1f, 0x0a, 0x0b, 0x74, 0x61, 0x72,
+	0x67, 0x65, 0x74, 0x5f, 0x6e, 0x61, 0x6d, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0a,
+	0x74, 0x61, 0x72, 0x67, 0x65, 0x74, 0x4e, 0x61, 0x6d, 0x65, 0x12, 0x12, 0x0a, 0x04, 0x70, 0x61,
+	0x74, 0x68, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x70, 0x61, 0x74, 0x68, 0x12, 0x24,
+	0x0a, 0x0e, 0x74, 0x72, 0x65, 0x6e, 0x64, 0x79, 0x5f, 0x74, 0x65, 0x61, 0x6d, 0x5f, 0x69, 0x64,
+	0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0c, 0x74, 0x72, 0x65, 0x6e, 0x64, 0x79, 0x54, 0x65,
+	0x61, 0x6d, 0x49, 0x64, 0x42, 0x27, 0x5a, 0x25, 0x61, 0x6e, 0x64, 0x72, 0x6f, 0x69, 0x64, 0x2f,
+	0x73, 0x6f, 0x6f, 0x6e, 0x67, 0x2f, 0x74, 0x65, 0x73, 0x74, 0x69, 0x6e, 0x67, 0x2f, 0x74, 0x65,
+	0x73, 0x74, 0x5f, 0x73, 0x70, 0x65, 0x63, 0x5f, 0x70, 0x72, 0x6f, 0x74, 0x6f,
+}
+
+var (
+	file_test_spec_proto_rawDescOnce sync.Once
+	file_test_spec_proto_rawDescData = file_test_spec_proto_rawDesc
+)
+
+func file_test_spec_proto_rawDescGZIP() []byte {
+	file_test_spec_proto_rawDescOnce.Do(func() {
+		file_test_spec_proto_rawDescData = protoimpl.X.CompressGZIP(file_test_spec_proto_rawDescData)
+	})
+	return file_test_spec_proto_rawDescData
+}
+
+var file_test_spec_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
+var file_test_spec_proto_goTypes = []interface{}{
+	(*TestSpec)(nil),                   // 0: test_spec_proto.TestSpec
+	(*TestSpec_OwnershipMetadata)(nil), // 1: test_spec_proto.TestSpec.OwnershipMetadata
+}
+var file_test_spec_proto_depIdxs = []int32{
+	1, // 0: test_spec_proto.TestSpec.ownership_metadata_list:type_name -> test_spec_proto.TestSpec.OwnershipMetadata
+	1, // [1:1] is the sub-list for method output_type
+	1, // [1:1] is the sub-list for method input_type
+	1, // [1:1] is the sub-list for extension type_name
+	1, // [1:1] is the sub-list for extension extendee
+	0, // [0:1] is the sub-list for field type_name
+}
+
+func init() { file_test_spec_proto_init() }
+func file_test_spec_proto_init() {
+	if File_test_spec_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_test_spec_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*TestSpec); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_test_spec_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*TestSpec_OwnershipMetadata); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_test_spec_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   2,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_test_spec_proto_goTypes,
+		DependencyIndexes: file_test_spec_proto_depIdxs,
+		MessageInfos:      file_test_spec_proto_msgTypes,
+	}.Build()
+	File_test_spec_proto = out.File
+	file_test_spec_proto_rawDesc = nil
+	file_test_spec_proto_goTypes = nil
+	file_test_spec_proto_depIdxs = nil
+}
diff --git a/testing/test_spec_proto/test_spec.proto b/testing/test_spec_proto/test_spec.proto
new file mode 100644
index 0000000..86bc789
--- /dev/null
+++ b/testing/test_spec_proto/test_spec.proto
@@ -0,0 +1,33 @@
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+syntax = "proto2";
+package test_spec_proto;
+option go_package = "android/soong/testing/test_spec_proto";
+
+message TestSpec {
+
+  message OwnershipMetadata {
+    // REQUIRED: Name of the build target
+    optional string target_name = 1;
+
+    // REQUIRED: Code location of the target.
+    // To be used to support legacy/backup systems that use OWNERS file and is
+    // also required for our dashboard to support per code location basis UI
+    optional string path = 2;
+
+    // REQUIRED: Team ID of the team that owns this target.
+    optional string trendy_team_id = 3;
+  }
+
+  // List of all test targets and their metadata.
+  repeated OwnershipMetadata ownership_metadata_list = 1;
+}
diff --git a/tests/genrule_sandbox_test.py b/tests/genrule_sandbox_test.py
index 874859a..3799e92 100755
--- a/tests/genrule_sandbox_test.py
+++ b/tests/genrule_sandbox_test.py
@@ -15,12 +15,14 @@
 # limitations under the License.
 
 import argparse
+import asyncio
 import collections
 import json
 import os
+import socket
 import subprocess
 import sys
-import tempfile
+import textwrap
 
 def get_top() -> str:
   path = '.'
@@ -30,39 +32,65 @@
     path = os.path.join(path, '..')
   return os.path.abspath(path)
 
-def _build_with_soong(targets, target_product, *, keep_going = False, extra_env={}):
-  env = {
-      **os.environ,
-      "TARGET_PRODUCT": target_product,
-      "TARGET_BUILD_VARIANT": "userdebug",
-  }
-  env.update(extra_env)
+async def _build_with_soong(out_dir, targets, *, extra_env={}):
+  env = os.environ | extra_env
+
+  # Use nsjail to remap the out_dir to out/, because some genrules write the path to the out
+  # dir into their artifacts, so if the out directories were different it would cause a diff
+  # that doesn't really matter.
   args = [
+      'prebuilts/build-tools/linux-x86/bin/nsjail',
+      '-q',
+      '--cwd',
+      os.getcwd(),
+      '-e',
+      '-B',
+      '/',
+      '-B',
+      f'{os.path.abspath(out_dir)}:{os.path.abspath("out")}',
+      '--time_limit',
+      '0',
+      '--skip_setsid',
+      '--keep_caps',
+      '--disable_clone_newcgroup',
+      '--disable_clone_newnet',
+      '--rlimit_as',
+      'soft',
+      '--rlimit_core',
+      'soft',
+      '--rlimit_cpu',
+      'soft',
+      '--rlimit_fsize',
+      'soft',
+      '--rlimit_nofile',
+      'soft',
+      '--proc_rw',
+      '--hostname',
+      socket.gethostname(),
+      '--',
       "build/soong/soong_ui.bash",
       "--make-mode",
       "--skip-soong-tests",
   ]
-  if keep_going:
-    args.append("-k")
   args.extend(targets)
-  try:
-    subprocess.check_output(
-        args,
-        env=env,
-    )
-  except subprocess.CalledProcessError as e:
-    print(e)
-    print(e.stdout)
-    print(e.stderr)
-    exit(1)
+  process = await asyncio.create_subprocess_exec(
+      *args,
+      stdout=asyncio.subprocess.PIPE,
+      stderr=asyncio.subprocess.PIPE,
+      env=env,
+  )
+  stdout, stderr = await process.communicate()
+  if process.returncode != 0:
+    print(stdout)
+    print(stderr)
+    sys.exit(process.returncode)
 
 
-def _find_outputs_for_modules(modules, out_dir, target_product):
-  module_path = os.path.join(out_dir, "soong", "module-actions.json")
+async def _find_outputs_for_modules(modules):
+  module_path = "out/soong/module-actions.json"
 
   if not os.path.exists(module_path):
-    # Use GENRULE_SANDBOXING=false so that we don't cause re-analysis later when we do the no-sandboxing build
-    _build_with_soong(["json-module-graph"], target_product, extra_env={"GENRULE_SANDBOXING": "false"})
+    await _build_with_soong('out', ["json-module-graph"])
 
   with open(module_path) as f:
     action_graph = json.load(f)
@@ -71,7 +99,7 @@
   for mod in action_graph:
     name = mod["Name"]
     if name in modules:
-      for act in mod["Module"]["Actions"]:
+      for act in (mod["Module"]["Actions"] or []):
         if "}generate" in act["Desc"]:
           module_to_outs[name].update(act["Outputs"])
   return module_to_outs
@@ -89,20 +117,19 @@
   return different_modules
 
 
-def main():
+async def main():
   parser = argparse.ArgumentParser()
   parser.add_argument(
-      "--target_product",
-      "-t",
-      default="aosp_cf_arm64_phone",
-      help="optional, target product, always runs as eng",
-  )
-  parser.add_argument(
       "modules",
       nargs="+",
       help="modules to compare builds with genrule sandboxing enabled/not",
   )
   parser.add_argument(
+      "--check-determinism",
+      action="store_true",
+      help="Don't check for working sandboxing. Instead, run two default builds, and compare their outputs. This is used to check for nondeterminsim, which would also affect the sandboxed test.",
+  )
+  parser.add_argument(
       "--show-diff",
       "-d",
       action="store_true",
@@ -117,10 +144,13 @@
   args = parser.parse_args()
   os.chdir(get_top())
 
-  out_dir = os.environ.get("OUT_DIR", "out")
+  if "TARGET_PRODUCT" not in os.environ:
+    sys.exit("Please run lunch first")
+  if os.environ.get("OUT_DIR", "out") != "out":
+    sys.exit(f"This script expects OUT_DIR to be 'out', got: '{os.environ.get('OUT_DIR')}'")
 
   print("finding output files for the modules...")
-  module_to_outs = _find_outputs_for_modules(set(args.modules), out_dir, args.target_product)
+  module_to_outs = await _find_outputs_for_modules(set(args.modules))
   if not module_to_outs:
     sys.exit("No outputs found")
 
@@ -130,33 +160,48 @@
     sys.exit(0)
 
   all_outs = list(set.union(*module_to_outs.values()))
+  for i, out in enumerate(all_outs):
+    if not out.startswith("out/"):
+      sys.exit("Expected output file to start with out/, found: " + out)
 
-  print("building without sandboxing...")
-  _build_with_soong(all_outs, args.target_product, extra_env={"GENRULE_SANDBOXING": "false"})
-  with tempfile.TemporaryDirectory() as tempdir:
-    for f in all_outs:
-      subprocess.check_call(["cp", "--parents", f, tempdir])
+  other_out_dir = "out_check_determinism" if args.check_determinism else "out_not_sandboxed"
+  other_env = {"GENRULE_SANDBOXING": "false"}
+  if args.check_determinism:
+    other_env = {}
 
-    print("building with sandboxing...")
-    _build_with_soong(
-        all_outs,
-        args.target_product,
-        # We've verified these build without sandboxing already, so do the sandboxing build
-        # with keep_going = True so that we can find all the genrules that fail to build with
-        # sandboxing.
-        keep_going = True,
-        extra_env={"GENRULE_SANDBOXING": "true"},
-    )
+  # nsjail will complain if the out dir doesn't exist
+  os.makedirs("out", exist_ok=True)
+  os.makedirs(other_out_dir, exist_ok=True)
 
-    diffs = _compare_outputs(module_to_outs, tempdir)
-    if len(diffs) == 0:
-      print("All modules are correct")
-    elif args.show_diff:
-      for m, d in diffs.items():
-        print(f"Module {m} has diffs {d}")
-    else:
-      print(f"Modules {list(diffs.keys())} have diffs")
+  print("building...")
+  await asyncio.gather(
+    _build_with_soong("out", all_outs),
+    _build_with_soong(other_out_dir, all_outs, extra_env=other_env)
+  )
+
+  diffs = collections.defaultdict(dict)
+  for module, outs in module_to_outs.items():
+    for out in outs:
+      try:
+        subprocess.check_output(["diff", os.path.join(other_out_dir, out.removeprefix("out/")), out])
+      except subprocess.CalledProcessError as e:
+        diffs[module][out] = e.stdout
+
+  if len(diffs) == 0:
+    print("All modules are correct")
+  elif args.show_diff:
+    for m, files in diffs.items():
+      print(f"Module {m} has diffs:")
+      for f, d in files.items():
+        print("  "+f+":")
+        print(textwrap.indent(d, "    "))
+  else:
+    print(f"Modules {list(diffs.keys())} have diffs in these files:")
+    all_diff_files = [f for m in diffs.values() for f in m]
+    for f in all_diff_files:
+      print(f)
+
 
 
 if __name__ == "__main__":
-  main()
+  asyncio.run(main())
diff --git a/ui/build/config.go b/ui/build/config.go
index 20d9204..d345415 100644
--- a/ui/build/config.go
+++ b/ui/build/config.go
@@ -86,7 +86,7 @@
 	searchApiDir             bool // Scan the Android.bp files generated in out/api_surfaces
 	skipMetricsUpload        bool
 	buildStartedTime         int64 // For metrics-upload-only - manually specify a build-started time
-	buildFromTextStub        bool
+	buildFromSourceStub      bool
 	ensureAllowlistIntegrity bool   // For CI builds - make sure modules are mixed-built
 	bazelExitCode            int32  // For b runs - necessary for updating NonZeroExit
 	besId                    string // For b runs, to identify the BuildEventService logs
@@ -820,8 +820,8 @@
 			} else {
 				ctx.Fatalf("unknown option for ninja_weight_source: %s", source)
 			}
-		} else if arg == "--build-from-text-stub" {
-			c.buildFromTextStub = true
+		} else if arg == "--build-from-source-stub" {
+			c.buildFromSourceStub = true
 		} else if strings.HasPrefix(arg, "--build-command=") {
 			buildCmd := strings.TrimPrefix(arg, "--build-command=")
 			// remove quotations
@@ -1156,7 +1156,7 @@
 }
 
 func (c *configImpl) BuildFromTextStub() bool {
-	return c.buildFromTextStub
+	return !c.buildFromSourceStub
 }
 
 func (c *configImpl) TargetProduct() string {
diff --git a/ui/build/soong.go b/ui/build/soong.go
index 90f1798..667f0c9 100644
--- a/ui/build/soong.go
+++ b/ui/build/soong.go
@@ -193,8 +193,8 @@
 	if pb.config.multitreeBuild {
 		commonArgs = append(commonArgs, "--multitree-build")
 	}
-	if pb.config.buildFromTextStub {
-		commonArgs = append(commonArgs, "--build-from-text-stub")
+	if pb.config.buildFromSourceStub {
+		commonArgs = append(commonArgs, "--build-from-source-stub")
 	}
 
 	commonArgs = append(commonArgs, "-l", filepath.Join(pb.config.FileListDir(), "Android.bp.list"))
@@ -310,8 +310,8 @@
 	if config.MultitreeBuild() {
 		mainSoongBuildExtraArgs = append(mainSoongBuildExtraArgs, "--multitree-build")
 	}
-	if config.buildFromTextStub {
-		mainSoongBuildExtraArgs = append(mainSoongBuildExtraArgs, "--build-from-text-stub")
+	if config.buildFromSourceStub {
+		mainSoongBuildExtraArgs = append(mainSoongBuildExtraArgs, "--build-from-source-stub")
 	}
 	if config.ensureAllowlistIntegrity {
 		mainSoongBuildExtraArgs = append(mainSoongBuildExtraArgs, "--ensure-allowlist-integrity")