Merge "Use generics for DepSets"
diff --git a/aconfig/Android.bp b/aconfig/Android.bp
new file mode 100644
index 0000000..d19b543
--- /dev/null
+++ b/aconfig/Android.bp
@@ -0,0 +1,32 @@
+package {
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+bootstrap_go_package {
+    name: "soong-aconfig",
+    pkgPath: "android/soong/aconfig",
+    deps: [
+        "blueprint",
+        "blueprint-pathtools",
+        "sbox_proto",
+        "soong",
+        "soong-android",
+        "soong-bazel",
+        "soong-android",
+        "soong-java",
+    ],
+    srcs: [
+        "aconfig_declarations.go",
+        "aconfig_values.go",
+        "aconfig_value_set.go",
+        "init.go",
+        "java_aconfig_library.go",
+        "testing.go",
+    ],
+    testSrcs: [
+        "aconfig_declarations_test.go",
+        "aconfig_values_test.go",
+        "aconfig_value_set_test.go",
+    ],
+    pluginFor: ["soong_build"],
+}
diff --git a/device_config/device_config_definitions.go b/aconfig/aconfig_declarations.go
similarity index 62%
rename from device_config/device_config_definitions.go
rename to aconfig/aconfig_declarations.go
index bb78695..007d529 100644
--- a/device_config/device_config_definitions.go
+++ b/aconfig/aconfig_declarations.go
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package device_config
+package aconfig
 
 import (
 	"android/soong/android"
@@ -21,27 +21,27 @@
 	"strings"
 )
 
-type DefinitionsModule struct {
+type DeclarationsModule struct {
 	android.ModuleBase
 	android.DefaultableModuleBase
 
-	// Properties for "device_config_definitions"
+	// Properties for "aconfig_declarations"
 	properties struct {
 		// aconfig files, relative to this Android.bp file
 		Srcs []string `android:"path"`
 
-		// Release config flag namespace
-		Namespace string
+		// Release config flag package
+		Package string
 
-		// Values from TARGET_RELEASE / RELEASE_DEVICE_CONFIG_VALUE_SETS
+		// Values from TARGET_RELEASE / RELEASE_ACONFIG_VALUE_SETS
 		Values []string `blueprint:"mutated"`
 	}
 
 	intermediatePath android.WritablePath
 }
 
-func DefinitionsFactory() android.Module {
-	module := &DefinitionsModule{}
+func DeclarationsFactory() android.Module {
+	module := &DeclarationsModule{}
 
 	android.InitAndroidModule(module)
 	android.InitDefaultableModule(module)
@@ -58,24 +58,24 @@
 
 var implicitValuesTag = implicitValuesTagType{}
 
-func (module *DefinitionsModule) DepsMutator(ctx android.BottomUpMutatorContext) {
+func (module *DeclarationsModule) DepsMutator(ctx android.BottomUpMutatorContext) {
 	// Validate Properties
 	if len(module.properties.Srcs) == 0 {
 		ctx.PropertyErrorf("srcs", "missing source files")
 		return
 	}
-	if len(module.properties.Namespace) == 0 {
-		ctx.PropertyErrorf("namespace", "missing namespace property")
+	if len(module.properties.Package) == 0 {
+		ctx.PropertyErrorf("package", "missing package property")
 	}
 
-	// Add a dependency on the device_config_value_sets defined in
-	// RELEASE_DEVICE_CONFIG_VALUE_SETS, and add any device_config_values that
-	// match our namespace.
-	valuesFromConfig := ctx.Config().ReleaseDeviceConfigValueSets()
+	// Add a dependency on the aconfig_value_sets defined in
+	// RELEASE_ACONFIG_VALUE_SETS, and add any aconfig_values that
+	// match our package.
+	valuesFromConfig := ctx.Config().ReleaseAconfigValueSets()
 	ctx.AddDependency(ctx.Module(), implicitValuesTag, valuesFromConfig...)
 }
 
-func (module *DefinitionsModule) OutputFiles(tag string) (android.Paths, error) {
+func (module *DeclarationsModule) OutputFiles(tag string) (android.Paths, error) {
 	switch tag {
 	case "":
 		// The default output of this module is the intermediates format, which is
@@ -83,7 +83,7 @@
 		// correctly.
 		return []android.Path{module.intermediatePath}, nil
 	default:
-		return nil, fmt.Errorf("unsupported device_config_definitions module reference tag %q", tag)
+		return nil, fmt.Errorf("unsupported aconfig_declarations module reference tag %q", tag)
 	}
 }
 
@@ -96,23 +96,23 @@
 	return sb.String()
 }
 
-// Provider published by device_config_value_set
-type definitionsProviderData struct {
-	namespace        string
-	intermediatePath android.WritablePath
+// Provider published by aconfig_value_set
+type declarationsProviderData struct {
+	Package          string
+	IntermediatePath android.WritablePath
 }
 
-var definitionsProviderKey = blueprint.NewProvider(definitionsProviderData{})
+var declarationsProviderKey = blueprint.NewProvider(declarationsProviderData{})
 
-func (module *DefinitionsModule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
-	// Get the values that came from the global RELEASE_DEVICE_CONFIG_VALUE_SETS flag
+func (module *DeclarationsModule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
+	// Get the values that came from the global RELEASE_ACONFIG_VALUE_SETS flag
 	ctx.VisitDirectDeps(func(dep android.Module) {
 		if !ctx.OtherModuleHasProvider(dep, valueSetProviderKey) {
 			// Other modules get injected as dependencies too, for example the license modules
 			return
 		}
 		depData := ctx.OtherModuleProvider(dep, valueSetProviderKey).(valueSetProviderData)
-		valuesFiles, ok := depData.AvailableNamespaces[module.properties.Namespace]
+		valuesFiles, ok := depData.AvailablePackages[module.properties.Package]
 		if ok {
 			for _, path := range valuesFiles {
 				module.properties.Values = append(module.properties.Values, path.String())
@@ -122,22 +122,22 @@
 
 	// Intermediate format
 	inputFiles := android.PathsForModuleSrc(ctx, module.properties.Srcs)
-	intermediatePath := android.PathForModuleOut(ctx, "intermediate.json")
+	intermediatePath := android.PathForModuleOut(ctx, "intermediate.pb")
 	ctx.Build(pctx, android.BuildParams{
 		Rule:        aconfigRule,
 		Inputs:      inputFiles,
 		Output:      intermediatePath,
-		Description: "device_config_definitions",
+		Description: "aconfig_declarations",
 		Args: map[string]string{
 			"release_version": ctx.Config().ReleaseVersion(),
-			"namespace":       module.properties.Namespace,
+			"package":         module.properties.Package,
 			"values":          joinAndPrefix(" --values ", module.properties.Values),
 		},
 	})
 
-	ctx.SetProvider(definitionsProviderKey, definitionsProviderData{
-		namespace:        module.properties.Namespace,
-		intermediatePath: intermediatePath,
+	ctx.SetProvider(declarationsProviderKey, declarationsProviderData{
+		Package:          module.properties.Package,
+		IntermediatePath: intermediatePath,
 	})
 
 }
diff --git a/device_config/device_config_definitions_test.go b/aconfig/aconfig_declarations_test.go
similarity index 68%
rename from device_config/device_config_definitions_test.go
rename to aconfig/aconfig_declarations_test.go
index 49afcc4..e14ca38 100644
--- a/device_config/device_config_definitions_test.go
+++ b/aconfig/aconfig_declarations_test.go
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package device_config
+package aconfig
 
 import (
 	"strings"
@@ -21,22 +21,22 @@
 	"android/soong/android"
 )
 
-func TestDeviceConfigDefinitions(t *testing.T) {
+func TestAconfigDeclarations(t *testing.T) {
 	bp := `
-		device_config_definitions {
+		aconfig_declarations {
 			name: "module_name",
-			namespace: "com.example.package",
+			package: "com.example.package",
 			srcs: ["foo.aconfig"],
 		}
 	`
 	result := runTest(t, android.FixtureExpectsNoErrors, bp)
 
-	module := result.ModuleForTests("module_name", "").Module().(*DefinitionsModule)
+	module := result.ModuleForTests("module_name", "").Module().(*DeclarationsModule)
 
 	// Check that the provider has the right contents
-	depData := result.ModuleProvider(module, definitionsProviderKey).(definitionsProviderData)
-	android.AssertStringEquals(t, "namespace", depData.namespace, "com.example.package")
-	if !strings.HasSuffix(depData.intermediatePath.String(), "/intermediate.json") {
-		t.Errorf("Missing intermediates path in provider: %s", depData.intermediatePath.String())
+	depData := result.ModuleProvider(module, declarationsProviderKey).(declarationsProviderData)
+	android.AssertStringEquals(t, "package", depData.Package, "com.example.package")
+	if !strings.HasSuffix(depData.IntermediatePath.String(), "/intermediate.pb") {
+		t.Errorf("Missing intermediates path in provider: %s", depData.IntermediatePath.String())
 	}
 }
diff --git a/device_config/device_config_value_set.go b/aconfig/aconfig_value_set.go
similarity index 76%
rename from device_config/device_config_value_set.go
rename to aconfig/aconfig_value_set.go
index e406d20..252908f 100644
--- a/device_config/device_config_value_set.go
+++ b/aconfig/aconfig_value_set.go
@@ -12,20 +12,20 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package device_config
+package aconfig
 
 import (
 	"android/soong/android"
 	"github.com/google/blueprint"
 )
 
-// Properties for "device_config_value_set"
+// Properties for "aconfig_value_set"
 type ValueSetModule struct {
 	android.ModuleBase
 	android.DefaultableModuleBase
 
 	properties struct {
-		// device_config_values modules
+		// aconfig_values modules
 		Values []string
 	}
 }
@@ -49,11 +49,11 @@
 
 var valueSetTag = valueSetType{}
 
-// Provider published by device_config_value_set
+// Provider published by aconfig_value_set
 type valueSetProviderData struct {
-	// The namespace of each of the
-	// (map of namespace --> device_config_module)
-	AvailableNamespaces map[string]android.Paths
+	// The package of each of the
+	// (map of package --> aconfig_module)
+	AvailablePackages map[string]android.Paths
 }
 
 var valueSetProviderKey = blueprint.NewProvider(valueSetProviderData{})
@@ -63,17 +63,17 @@
 	for _, dep := range deps {
 		_, ok := dep.(*ValuesModule)
 		if !ok {
-			ctx.PropertyErrorf("values", "values must be a device_config_values module")
+			ctx.PropertyErrorf("values", "values must be a aconfig_values module")
 			return
 		}
 	}
 }
 
 func (module *ValueSetModule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
-	// Accumulate the namespaces of the values modules listed, and set that as an
-	// valueSetProviderKey provider that device_config modules can read and use
+	// Accumulate the packages of the values modules listed, and set that as an
+	// valueSetProviderKey provider that aconfig modules can read and use
 	// to append values to their aconfig actions.
-	namespaces := make(map[string]android.Paths)
+	packages := make(map[string]android.Paths)
 	ctx.VisitDirectDeps(func(dep android.Module) {
 		if !ctx.OtherModuleHasProvider(dep, valuesProviderKey) {
 			// Other modules get injected as dependencies too, for example the license modules
@@ -83,10 +83,10 @@
 
 		srcs := make([]android.Path, len(depData.Values))
 		copy(srcs, depData.Values)
-		namespaces[depData.Namespace] = srcs
+		packages[depData.Package] = srcs
 
 	})
 	ctx.SetProvider(valueSetProviderKey, valueSetProviderData{
-		AvailableNamespaces: namespaces,
+		AvailablePackages: packages,
 	})
 }
diff --git a/device_config/device_config_value_set_test.go b/aconfig/aconfig_value_set_test.go
similarity index 78%
rename from device_config/device_config_value_set_test.go
rename to aconfig/aconfig_value_set_test.go
index f9e7c38..9127872 100644
--- a/device_config/device_config_value_set_test.go
+++ b/aconfig/aconfig_value_set_test.go
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package device_config
+package aconfig
 
 import (
 	"testing"
@@ -20,15 +20,15 @@
 	"android/soong/android"
 )
 
-func TestDeviceConfigValueSet(t *testing.T) {
+func TestAconfigValueSet(t *testing.T) {
 	bp := `
-				device_config_values {
+				aconfig_values {
 					name: "one",
 					srcs: [ "blah.aconfig_values" ],
-					namespace: "foo.namespace"
+					package: "foo.package"
 				}
 
-				device_config_value_set {
+				aconfig_value_set {
 					name: "module_name",
           values: [ "one" ],
 				}
@@ -39,5 +39,5 @@
 
 	// Check that the provider has the right contents
 	depData := result.ModuleProvider(module, valueSetProviderKey).(valueSetProviderData)
-	android.AssertStringEquals(t, "AvailableNamespaces", "blah.aconfig_values", depData.AvailableNamespaces["foo.namespace"][0].String())
+	android.AssertStringEquals(t, "AvailablePackages", "blah.aconfig_values", depData.AvailablePackages["foo.package"][0].String())
 }
diff --git a/device_config/device_config_values.go b/aconfig/aconfig_values.go
similarity index 73%
rename from device_config/device_config_values.go
rename to aconfig/aconfig_values.go
index 110f12a..91f1c90 100644
--- a/device_config/device_config_values.go
+++ b/aconfig/aconfig_values.go
@@ -12,14 +12,14 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package device_config
+package aconfig
 
 import (
 	"android/soong/android"
 	"github.com/google/blueprint"
 )
 
-// Properties for "device_config_value"
+// Properties for "aconfig_value"
 type ValuesModule struct {
 	android.ModuleBase
 	android.DefaultableModuleBase
@@ -28,8 +28,8 @@
 		// aconfig files, relative to this Android.bp file
 		Srcs []string `android:"path"`
 
-		// Release config flag namespace
-		Namespace string
+		// Release config flag package
+		Package string
 	}
 }
 
@@ -45,10 +45,10 @@
 	return module
 }
 
-// Provider published by device_config_value_set
+// Provider published by aconfig_value_set
 type valuesProviderData struct {
-	// The namespace that this values module values
-	Namespace string
+	// The package that this values module values
+	Package string
 
 	// The values aconfig files, relative to the root of the tree
 	Values android.Paths
@@ -57,14 +57,14 @@
 var valuesProviderKey = blueprint.NewProvider(valuesProviderData{})
 
 func (module *ValuesModule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
-	if len(module.properties.Namespace) == 0 {
-		ctx.PropertyErrorf("namespace", "missing namespace property")
+	if len(module.properties.Package) == 0 {
+		ctx.PropertyErrorf("package", "missing package property")
 	}
 
-	// Provide the our source files list to the device_config_value_set as a list of files
+	// Provide the our source files list to the aconfig_value_set as a list of files
 	providerData := valuesProviderData{
-		Namespace: module.properties.Namespace,
-		Values:    android.PathsForModuleSrc(ctx, module.properties.Srcs),
+		Package: module.properties.Package,
+		Values:  android.PathsForModuleSrc(ctx, module.properties.Srcs),
 	}
 	ctx.SetProvider(valuesProviderKey, providerData)
 }
diff --git a/device_config/device_config_values_test.go b/aconfig/aconfig_values_test.go
similarity index 83%
rename from device_config/device_config_values_test.go
rename to aconfig/aconfig_values_test.go
index 64c57eb..ab457f0 100644
--- a/device_config/device_config_values_test.go
+++ b/aconfig/aconfig_values_test.go
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package device_config
+package aconfig
 
 import (
 	"testing"
@@ -20,12 +20,12 @@
 	"android/soong/android"
 )
 
-func TestDeviceConfigValues(t *testing.T) {
+func TestAconfigValues(t *testing.T) {
 	bp := `
-				device_config_values {
+				aconfig_values {
 					name: "module_name",
 					srcs: [ "blah.aconfig_values" ],
-					namespace: "foo.namespace"
+					package: "foo.package"
 				}
 			`
 	result := runTest(t, android.FixtureExpectsNoErrors, bp)
@@ -34,6 +34,6 @@
 
 	// Check that the provider has the right contents
 	depData := result.ModuleProvider(module, valuesProviderKey).(valuesProviderData)
-	android.AssertStringEquals(t, "namespace", "foo.namespace", depData.Namespace)
+	android.AssertStringEquals(t, "package", "foo.package", depData.Package)
 	android.AssertPathsEndWith(t, "srcs", []string{"blah.aconfig_values"}, depData.Values)
 }
diff --git a/device_config/init.go b/aconfig/init.go
similarity index 74%
rename from device_config/init.go
rename to aconfig/init.go
index 04bbab6..6b433c9 100644
--- a/device_config/init.go
+++ b/aconfig/init.go
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package device_config
+package aconfig
 
 import (
 	"android/soong/android"
@@ -20,13 +20,13 @@
 )
 
 var (
-	pctx = android.NewPackageContext("android/soong/device_config")
+	pctx = android.NewPackageContext("android/soong/aconfig")
 
-	// For device_config_definitions: Generate cache file
+	// For aconfig_declarations: Generate cache file
 	aconfigRule = pctx.AndroidStaticRule("aconfig",
 		blueprint.RuleParams{
 			Command: `${aconfig} create-cache` +
-				` --package ${namespace}` +
+				` --package ${package}` +
 				` --declarations ${in}` +
 				` ${values}` +
 				` --cache ${out}.tmp` +
@@ -36,9 +36,9 @@
 				"${aconfig}",
 			},
 			Restat: true,
-		}, "release_version", "namespace", "values")
+		}, "release_version", "package", "values")
 
-	// For java_device_config_definitions_library: Generate java file
+	// For java_aconfig_library: Generate java file
 	srcJarRule = pctx.AndroidStaticRule("aconfig_srcjar",
 		blueprint.RuleParams{
 			Command: `rm -rf ${out}.tmp` +
@@ -63,8 +63,8 @@
 }
 
 func registerBuildComponents(ctx android.RegistrationContext) {
-	ctx.RegisterModuleType("device_config_definitions", DefinitionsFactory)
-	ctx.RegisterModuleType("device_config_values", ValuesFactory)
-	ctx.RegisterModuleType("device_config_value_set", ValueSetFactory)
-	ctx.RegisterModuleType("java_device_config_definitions_library", JavaDefinitionsLibraryFactory)
+	ctx.RegisterModuleType("aconfig_declarations", DeclarationsFactory)
+	ctx.RegisterModuleType("aconfig_values", ValuesFactory)
+	ctx.RegisterModuleType("aconfig_value_set", ValueSetFactory)
+	ctx.RegisterModuleType("java_aconfig_library", JavaDeclarationsLibraryFactory)
 }
diff --git a/aconfig/java_aconfig_library.go b/aconfig/java_aconfig_library.go
new file mode 100644
index 0000000..0eeb14f
--- /dev/null
+++ b/aconfig/java_aconfig_library.go
@@ -0,0 +1,71 @@
+// 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 aconfig
+
+import (
+	"android/soong/android"
+	"android/soong/java"
+	"fmt"
+	"github.com/google/blueprint"
+)
+
+type declarationsTagType struct {
+	blueprint.BaseDependencyTag
+}
+
+var declarationsTag = declarationsTagType{}
+
+type JavaAconfigDeclarationsLibraryProperties struct {
+	// name of the aconfig_declarations module to generate a library for
+	Aconfig_declarations string
+}
+
+type JavaAconfigDeclarationsLibraryCallbacks struct {
+	properties JavaAconfigDeclarationsLibraryProperties
+}
+
+func JavaDeclarationsLibraryFactory() android.Module {
+	callbacks := &JavaAconfigDeclarationsLibraryCallbacks{}
+	return java.GeneratedJavaLibraryModuleFactory("java_aconfig_library", callbacks, &callbacks.properties)
+}
+
+func (callbacks *JavaAconfigDeclarationsLibraryCallbacks) DepsMutator(module *java.GeneratedJavaLibraryModule, ctx android.BottomUpMutatorContext) {
+	declarations := callbacks.properties.Aconfig_declarations
+	if len(declarations) == 0 {
+		// TODO: Add test for this case
+		ctx.PropertyErrorf("aconfig_declarations", "aconfig_declarations property required")
+	} else {
+		ctx.AddDependency(ctx.Module(), declarationsTag, declarations)
+	}
+}
+
+func (callbacks *JavaAconfigDeclarationsLibraryCallbacks) GenerateSourceJarBuildActions(ctx android.ModuleContext) android.Path {
+	// Get the values that came from the global RELEASE_ACONFIG_VALUE_SETS flag
+	declarationsModules := ctx.GetDirectDepsWithTag(declarationsTag)
+	if len(declarationsModules) != 1 {
+		panic(fmt.Errorf("Exactly one aconfig_declarations property required"))
+	}
+	declarations := ctx.OtherModuleProvider(declarationsModules[0], declarationsProviderKey).(declarationsProviderData)
+
+	srcJarPath := android.PathForModuleGen(ctx, ctx.ModuleName()+".srcjar")
+	ctx.Build(pctx, android.BuildParams{
+		Rule:        srcJarRule,
+		Input:       declarations.IntermediatePath,
+		Output:      srcJarPath,
+		Description: "aconfig.srcjar",
+	})
+
+	return srcJarPath
+}
diff --git a/device_config/testing.go b/aconfig/testing.go
similarity index 78%
rename from device_config/testing.go
rename to aconfig/testing.go
index 284a7fa..60cefeb 100644
--- a/device_config/testing.go
+++ b/aconfig/testing.go
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package device_config
+package aconfig
 
 import (
 	"testing"
@@ -20,10 +20,10 @@
 	"android/soong/android"
 )
 
-var PrepareForTestWithDeviceConfigBuildComponents = android.FixtureRegisterWithContext(registerBuildComponents)
+var PrepareForTestWithAconfigBuildComponents = android.FixtureRegisterWithContext(registerBuildComponents)
 
 func runTest(t *testing.T, errorHandler android.FixtureErrorHandler, bp string) *android.TestResult {
-	return android.GroupFixturePreparers(PrepareForTestWithDeviceConfigBuildComponents).
+	return android.GroupFixturePreparers(PrepareForTestWithAconfigBuildComponents).
 		ExtendWithErrorHandler(errorHandler).
 		RunTestWithBp(t, bp)
 }
diff --git a/android/Android.bp b/android/Android.bp
index 0ebc29b..fc5198f 100644
--- a/android/Android.bp
+++ b/android/Android.bp
@@ -19,6 +19,7 @@
         "soong-shared",
         "soong-starlark",
         "soong-starlark-format",
+        "soong-ui-bp2build_metrics_proto",
         "soong-ui-metrics_proto",
         "soong-android-allowlists",
 
diff --git a/android/allowlists/allowlists.go b/android/allowlists/allowlists.go
index 78f1de2..34a6860 100644
--- a/android/allowlists/allowlists.go
+++ b/android/allowlists/allowlists.go
@@ -190,6 +190,7 @@
 		"external/python/six":                    Bp2BuildDefaultTrueRecursively,
 		"external/rappor":                        Bp2BuildDefaultTrueRecursively,
 		"external/scudo":                         Bp2BuildDefaultTrueRecursively,
+		"external/selinux/checkpolicy":           Bp2BuildDefaultTrueRecursively,
 		"external/selinux/libselinux":            Bp2BuildDefaultTrueRecursively,
 		"external/selinux/libsepol":              Bp2BuildDefaultTrueRecursively,
 		"external/speex":                         Bp2BuildDefaultTrueRecursively,
@@ -1485,6 +1486,7 @@
 		"tradefed",
 		"permissive_mte_test",
 		"ICU4CTestRunner",
+		"DeviceLongPollingStubTest",
 
 		"HelloWorldHostTest", // TODO(b/280452825): Convert HelloWorldHostTest to b test
 
diff --git a/android/bazel.go b/android/bazel.go
index e631ed4..1bfbdec 100644
--- a/android/bazel.go
+++ b/android/bazel.go
@@ -17,8 +17,10 @@
 import (
 	"bufio"
 	"errors"
+	"fmt"
 	"strings"
 
+	"android/soong/ui/metrics/bp2build_metrics_proto"
 	"github.com/google/blueprint"
 	"github.com/google/blueprint/proptools"
 
@@ -73,6 +75,21 @@
 
 	// MissingBp2buildDep stores the module names of direct dependency that were not found
 	MissingDeps []string `blueprint:"mutated"`
+
+	// If non-nil, indicates that the module could not be converted successfully
+	// with bp2build. This will describe the reason the module could not be converted.
+	UnconvertedReason *UnconvertedReason
+}
+
+// The reason a module could not be converted to a BUILD target via bp2build.
+// This should match bp2build_metrics_proto.UnconvertedReason, but omits private
+// proto-related fields that prevent copying this struct.
+type UnconvertedReason struct {
+	// Should correspond to a valid value in bp2build_metrics_proto.UnconvertedReasonType.
+	// A raw int is used here instead, because blueprint logic requires that all transitive
+	// fields of module definitions be primitives.
+	ReasonType int
+	Detail     string
 }
 
 type BazelModuleProperties struct {
@@ -137,6 +154,12 @@
 	GetBazelLabel(ctx BazelConversionPathContext, module blueprint.Module) string
 	ShouldConvertWithBp2build(ctx BazelConversionContext) bool
 	shouldConvertWithBp2build(ctx bazelOtherModuleContext, module blueprint.Module) bool
+
+	// ConvertWithBp2build either converts the module to a Bazel build target or
+	// declares the module as unconvertible (for logging and metrics).
+	// Modules must implement this function to be bp2build convertible. The function
+	// must either create at least one Bazel target module (using ctx.CreateBazelTargetModule or
+	// its related functions), or declare itself unconvertible using ctx.MarkBp2buildUnconvertible.
 	ConvertWithBp2build(ctx TopDownMutatorContext)
 
 	// namespacedVariableProps is a map from a soong config variable namespace
@@ -232,7 +255,7 @@
 	if b.ShouldConvertWithBp2build(ctx) {
 		return bp2buildModuleLabel(ctx, module)
 	}
-	return "" // no label for unconverted module
+	panic(fmt.Errorf("requested non-existent label for module ", module.Name()))
 }
 
 type Bp2BuildConversionAllowlist struct {
@@ -533,22 +556,32 @@
 }
 
 func registerBp2buildConversionMutator(ctx RegisterMutatorsContext) {
-	ctx.TopDown("bp2build_conversion", convertWithBp2build).Parallel()
+	ctx.TopDown("bp2build_conversion", bp2buildConversionMutator).Parallel()
 }
 
-func convertWithBp2build(ctx TopDownMutatorContext) {
+func bp2buildConversionMutator(ctx TopDownMutatorContext) {
 	if ctx.Config().HasBazelBuildTargetInSource(ctx) {
 		// Defer to the BUILD target. Generating an additional target would
 		// cause a BUILD file conflict.
+		ctx.MarkBp2buildUnconvertible(bp2build_metrics_proto.UnconvertedReasonType_DEFINED_IN_BUILD_FILE, "")
 		return
 	}
 
 	bModule, ok := ctx.Module().(Bazelable)
-	if !ok || !bModule.shouldConvertWithBp2build(ctx, ctx.Module()) {
+	if !ok {
+		ctx.MarkBp2buildUnconvertible(bp2build_metrics_proto.UnconvertedReasonType_TYPE_UNSUPPORTED, "")
 		return
 	}
-
+	// TODO: b/285631638 - Differentiate between denylisted modules and missing bp2build capabilities.
+	if !bModule.shouldConvertWithBp2build(ctx, ctx.Module()) {
+		ctx.MarkBp2buildUnconvertible(bp2build_metrics_proto.UnconvertedReasonType_UNSUPPORTED, "")
+		return
+	}
 	bModule.ConvertWithBp2build(ctx)
+
+	if !ctx.Module().base().IsConvertedByBp2build() && ctx.Module().base().GetUnconvertedReason() == nil {
+		panic(fmt.Errorf("illegal bp2build invariant: module '%s' was neither converted nor marked unconvertible", ctx.ModuleName()))
+	}
 }
 
 func registerApiBp2buildConversionMutator(ctx RegisterMutatorsContext) {
diff --git a/android/bazel_handler.go b/android/bazel_handler.go
index 4645e6b..f4b368b 100644
--- a/android/bazel_handler.go
+++ b/android/bazel_handler.go
@@ -28,7 +28,7 @@
 	"android/soong/android/allowlists"
 	"android/soong/bazel/cquery"
 	"android/soong/shared"
-	"android/soong/starlark_fmt"
+	"android/soong/starlark_import"
 
 	"github.com/google/blueprint"
 	"github.com/google/blueprint/metrics"
@@ -44,34 +44,6 @@
 		Description: "",
 		CommandDeps: []string{"${bazelBuildRunfilesTool}"},
 	}, "outDir")
-	allowedBazelEnvironmentVars = []string{
-		// clang-tidy
-		"ALLOW_LOCAL_TIDY_TRUE",
-		"DEFAULT_TIDY_HEADER_DIRS",
-		"TIDY_TIMEOUT",
-		"WITH_TIDY",
-		"WITH_TIDY_FLAGS",
-		"TIDY_EXTERNAL_VENDOR",
-
-		"SKIP_ABI_CHECKS",
-		"UNSAFE_DISABLE_APEX_ALLOWED_DEPS_CHECK",
-		"AUTO_ZERO_INITIALIZE",
-		"AUTO_PATTERN_INITIALIZE",
-		"AUTO_UNINITIALIZE",
-		"USE_CCACHE",
-		"LLVM_NEXT",
-		"LLVM_PREBUILTS_VERSION",
-		"LLVM_RELEASE_VERSION",
-		"ALLOW_UNKNOWN_WARNING_OPTION",
-
-		"UNBUNDLED_BUILD_TARGET_SDK_WITH_API_FINGERPRINT",
-
-		// Overrides the version in the apex_manifest.json. The version is unique for
-		// each branch (internal, aosp, mainline releases, dessert releases).  This
-		// enables modules built on an older branch to be installed against a newer
-		// device for development purposes.
-		"OVERRIDE_APEX_MANIFEST_DEFAULT_VERSION",
-	}
 )
 
 func registerMixedBuildsMutator(ctx RegisterMutatorsContext) {
@@ -257,8 +229,6 @@
 	bazelEnabledModules map[string]bool
 	// DCLA modules are enabled when used in apex.
 	bazelDclaEnabledModules map[string]bool
-	// If true, modules are bazel-enabled by default, unless present in bazelDisabledModules.
-	modulesDefaultToBazel bool
 
 	targetProduct      string
 	targetBuildVariant string
@@ -525,10 +495,8 @@
 		for enabledAdHocModule := range forceEnabled {
 			enabledModules[enabledAdHocModule] = true
 		}
-	case BazelDevMode:
-		AddToStringSet(disabledModules, allowlists.MixedBuildsDisabledList)
 	default:
-		panic("Expected BazelProdMode, BazelStagingMode, or BazelDevMode")
+		panic("Expected BazelProdMode or BazelStagingMode")
 	}
 	return enabledModules, disabledModules
 }
@@ -546,7 +514,7 @@
 }
 
 func NewBazelContext(c *config) (BazelContext, error) {
-	if c.BuildMode != BazelProdMode && c.BuildMode != BazelStagingMode && c.BuildMode != BazelDevMode {
+	if c.BuildMode != BazelProdMode && c.BuildMode != BazelStagingMode {
 		return noopBazelContext{}, nil
 	}
 
@@ -610,7 +578,6 @@
 	return &mixedBuildBazelContext{
 		bazelRunner:             &builtinBazelRunner{c.UseBazelProxy, absolutePath(c.outDir)},
 		paths:                   &paths,
-		modulesDefaultToBazel:   c.BuildMode == BazelDevMode,
 		bazelEnabledModules:     enabledModules,
 		bazelDisabledModules:    disabledModules,
 		bazelDclaEnabledModules: dclaEnabledModules,
@@ -634,7 +601,7 @@
 		return true
 	}
 
-	return context.modulesDefaultToBazel
+	return false
 }
 
 func (context *mixedBuildBazelContext) IsModuleDclaAllowed(moduleName string) bool {
@@ -722,7 +689,11 @@
 		// explicitly in BUILD files.
 		"BAZEL_DO_NOT_DETECT_CPP_TOOLCHAIN=1",
 	}
-	for _, envvar := range allowedBazelEnvironmentVars {
+	capturedEnvVars, err := starlark_import.GetStarlarkValue[[]string]("captured_env_vars")
+	if err != nil {
+		panic(err)
+	}
+	for _, envvar := range capturedEnvVars {
 		val := config.Getenv(envvar)
 		if val == "" {
 			continue
@@ -1441,13 +1412,3 @@
 func bazelDepsetName(contentHash string) string {
 	return fmt.Sprintf("bazel_depset_%s", contentHash)
 }
-
-func EnvironmentVarsFile(config Config) string {
-	return fmt.Sprintf(bazel.GeneratedBazelFileWarning+`
-_env = %s
-
-env = _env
-`,
-		starlark_fmt.PrintStringList(allowedBazelEnvironmentVars, 0),
-	)
-}
diff --git a/android/bazel_handler_test.go b/android/bazel_handler_test.go
index b17b765..a81a878 100644
--- a/android/bazel_handler_test.go
+++ b/android/bazel_handler_test.go
@@ -263,7 +263,6 @@
 	}
 
 	bazelContext := &mixedBuildBazelContext{
-		modulesDefaultToBazel:   false,
 		bazelEnabledModules:     enabledModules,
 		bazelDisabledModules:    disabledModules,
 		bazelDclaEnabledModules: dclaEnabledModules,
diff --git a/android/config.go b/android/config.go
index 90dbe0b..8c5f6e3 100644
--- a/android/config.go
+++ b/android/config.go
@@ -96,7 +96,6 @@
 	MultitreeBuild bool
 
 	BazelMode                bool
-	BazelModeDev             bool
 	BazelModeStaging         bool
 	BazelForceEnabledModules string
 
@@ -132,11 +131,6 @@
 	// Generate a documentation file for module type definitions and exit.
 	GenerateDocFile
 
-	// Use bazel during analysis of many allowlisted build modules. The allowlist
-	// is considered a "developer mode" allowlist, as some modules may be
-	// allowlisted on an experimental basis.
-	BazelDevMode
-
 	// Use bazel during analysis of a few allowlisted build modules. The allowlist
 	// is considered "staging, as these are modules being prepared to be released
 	// into prod mode shortly after.
@@ -190,8 +184,8 @@
 }
 
 // The flag values files passed to aconfig, derived from RELEASE_VERSION
-func (c Config) ReleaseDeviceConfigValueSets() []string {
-	return c.config.productVariables.ReleaseDeviceConfigValueSets
+func (c Config) ReleaseAconfigValueSets() []string {
+	return c.config.productVariables.ReleaseAconfigValueSets
 }
 
 // A DeviceConfig object represents the configuration for a particular device
@@ -622,7 +616,6 @@
 	setBuildMode(cmdArgs.BazelApiBp2buildDir, ApiBp2build)
 	setBuildMode(cmdArgs.ModuleGraphFile, GenerateModuleGraph)
 	setBuildMode(cmdArgs.DocFile, GenerateDocFile)
-	setBazelMode(cmdArgs.BazelModeDev, "--bazel-mode-dev", BazelDevMode)
 	setBazelMode(cmdArgs.BazelMode, "--bazel-mode", BazelProdMode)
 	setBazelMode(cmdArgs.BazelModeStaging, "--bazel-mode-staging", BazelStagingMode)
 
@@ -726,7 +719,7 @@
 		return true
 	}).(bool)
 
-	bazelModeEnabled := c.BuildMode == BazelProdMode || c.BuildMode == BazelDevMode || c.BuildMode == BazelStagingMode
+	bazelModeEnabled := c.BuildMode == BazelProdMode || c.BuildMode == BazelStagingMode
 	return globalMixedBuildsSupport && bazelModeEnabled
 }
 
@@ -1688,10 +1681,6 @@
 	return c.productVariables.InterPartitionJavaLibraryAllowList
 }
 
-func (c *config) InstallExtraFlattenedApexes() bool {
-	return Bool(c.productVariables.InstallExtraFlattenedApexes)
-}
-
 func (c *config) ProductHiddenAPIStubs() []string {
 	return c.productVariables.ProductHiddenAPIStubs
 }
diff --git a/android/defaults.go b/android/defaults.go
index 31d6014..e0e6e5c 100644
--- a/android/defaults.go
+++ b/android/defaults.go
@@ -17,6 +17,7 @@
 import (
 	"reflect"
 
+	"android/soong/ui/metrics/bp2build_metrics_proto"
 	"github.com/google/blueprint"
 	"github.com/google/blueprint/proptools"
 )
@@ -179,7 +180,10 @@
 
 // ConvertWithBp2build to fulfill Bazelable interface; however, at this time defaults module are
 // *NOT* converted with bp2build
-func (defaultable *DefaultsModuleBase) ConvertWithBp2build(ctx TopDownMutatorContext) {}
+func (defaultable *DefaultsModuleBase) ConvertWithBp2build(ctx TopDownMutatorContext) {
+	// Defaults types are never convertible.
+	ctx.MarkBp2buildUnconvertible(bp2build_metrics_proto.UnconvertedReasonType_TYPE_UNSUPPORTED, "")
+}
 
 func InitDefaultsModule(module DefaultsModule) {
 	commonProperties := &commonProperties{}
diff --git a/android/filegroup.go b/android/filegroup.go
index 3522f80..3b86655 100644
--- a/android/filegroup.go
+++ b/android/filegroup.go
@@ -21,6 +21,7 @@
 
 	"android/soong/bazel"
 	"android/soong/bazel/cquery"
+	"android/soong/ui/metrics/bp2build_metrics_proto"
 
 	"github.com/google/blueprint"
 )
@@ -111,6 +112,7 @@
 			if len(srcs.Value.Includes) > 1 {
 				ctx.ModuleErrorf("filegroup '%s' cannot contain a file with the same name", fg.Name())
 			}
+			ctx.MarkBp2buildUnconvertible(bp2build_metrics_proto.UnconvertedReasonType_SRC_NAME_COLLISION, "")
 			return
 		}
 	}
diff --git a/android/module.go b/android/module.go
index c1ba67a..384776a 100644
--- a/android/module.go
+++ b/android/module.go
@@ -30,6 +30,7 @@
 	"text/scanner"
 
 	"android/soong/bazel"
+	"android/soong/ui/metrics/bp2build_metrics_proto"
 
 	"github.com/google/blueprint"
 	"github.com/google/blueprint/proptools"
@@ -483,6 +484,7 @@
 	TargetRequiredModuleNames() []string
 
 	ModuleSubDir() string
+	SoongConfigTraceHash() string
 
 	Variable(pctx PackageContext, name, value string)
 	Rule(pctx PackageContext, name string, params blueprint.RuleParams, argNames ...string) blueprint.Rule
@@ -565,6 +567,8 @@
 
 	// IsConvertedByBp2build returns whether this module was converted via bp2build
 	IsConvertedByBp2build() bool
+	GetUnconvertedReason() *UnconvertedReason
+
 	// Bp2buildTargets returns the target(s) generated for Bazel via bp2build for this module
 	Bp2buildTargets() []bp2buildInfo
 	GetUnconvertedBp2buildDeps() []string
@@ -987,7 +991,11 @@
 	// Bazel conversion status
 	BazelConversionStatus BazelConversionStatus `blueprint:"mutated"`
 
-	// SoongConfigTrace records accesses to VendorVars (soong_config)
+	// SoongConfigTrace records accesses to VendorVars (soong_config). The trace will be hashed
+	// and used as a subdir of PathForModuleOut.  Note that we mainly focus on incremental
+	// builds among similar products (e.g. aosp_cf_x86_64_phone and aosp_cf_x86_64_foldable),
+	// and there are variables other than soong_config, which isn't captured by soong config
+	// trace, but influence modules among products.
 	SoongConfigTrace     soongConfigTrace `blueprint:"mutated"`
 	SoongConfigTraceHash string           `blueprint:"mutated"`
 }
@@ -1591,14 +1599,31 @@
 }
 
 func (m *ModuleBase) addBp2buildInfo(info bp2buildInfo) {
+	if m.commonProperties.BazelConversionStatus.UnconvertedReason != nil {
+		panic(fmt.Errorf("bp2build: module '%s' marked unconvertible and also is converted", m.Name()))
+	}
 	m.commonProperties.BazelConversionStatus.Bp2buildInfo = append(m.commonProperties.BazelConversionStatus.Bp2buildInfo, info)
 }
 
+func (m *ModuleBase) setBp2buildUnconvertible(reasonType bp2build_metrics_proto.UnconvertedReasonType, detail string) {
+	if len(m.commonProperties.BazelConversionStatus.Bp2buildInfo) > 0 {
+		panic(fmt.Errorf("bp2build: module '%s' marked unconvertible and also is converted", m.Name()))
+	}
+	m.commonProperties.BazelConversionStatus.UnconvertedReason = &UnconvertedReason{
+		ReasonType: int(reasonType),
+		Detail:     detail,
+	}
+}
+
 // IsConvertedByBp2build returns whether this module was converted via bp2build.
 func (m *ModuleBase) IsConvertedByBp2build() bool {
 	return len(m.commonProperties.BazelConversionStatus.Bp2buildInfo) > 0
 }
 
+func (m *ModuleBase) GetUnconvertedReason() *UnconvertedReason {
+	return m.commonProperties.BazelConversionStatus.UnconvertedReason
+}
+
 // Bp2buildTargets returns the Bazel targets bp2build generated for this module.
 func (m *ModuleBase) Bp2buildTargets() []bp2buildInfo {
 	return m.commonProperties.BazelConversionStatus.Bp2buildInfo
@@ -3192,7 +3217,7 @@
 	return m.bp.ModuleSubDir()
 }
 
-func (m *moduleContext) ModuleSoongConfigHash() string {
+func (m *moduleContext) SoongConfigTraceHash() string {
 	return m.module.base().commonProperties.SoongConfigTraceHash
 }
 
diff --git a/android/mutator.go b/android/mutator.go
index 4185315..2ec051e 100644
--- a/android/mutator.go
+++ b/android/mutator.go
@@ -16,6 +16,7 @@
 
 import (
 	"android/soong/bazel"
+	"android/soong/ui/metrics/bp2build_metrics_proto"
 
 	"github.com/google/blueprint"
 )
@@ -271,6 +272,10 @@
 	// any platform for which this bool attribute is false.
 	CreateBazelTargetModuleWithRestrictions(bazel.BazelTargetModuleProperties, CommonAttributes, interface{}, bazel.BoolAttribute)
 
+	// MarkBp2buildUnconvertible registers the current module as "unconvertible to bp2build" for the
+	// given reason.
+	MarkBp2buildUnconvertible(reasonType bp2build_metrics_proto.UnconvertedReasonType, detail string)
+
 	// CreateBazelTargetAliasInDir creates an alias definition in `dir` directory.
 	// This function can be used to create alias definitions in a directory that is different
 	// from the directory of the visited Soong module.
@@ -718,6 +723,12 @@
 	t.createBazelTargetModule(bazelProps, commonAttrs, attrs, enabledProperty)
 }
 
+func (t *topDownMutatorContext) MarkBp2buildUnconvertible(
+	reasonType bp2build_metrics_proto.UnconvertedReasonType, detail string) {
+	mod := t.Module()
+	mod.base().setBp2buildUnconvertible(reasonType, detail)
+}
+
 var (
 	bazelAliasModuleProperties = bazel.BazelTargetModuleProperties{
 		Rule_class: "alias",
diff --git a/android/neverallow.go b/android/neverallow.go
index f2e8c85..41105e6 100644
--- a/android/neverallow.go
+++ b/android/neverallow.go
@@ -239,7 +239,9 @@
 func createInitFirstStageRules() []Rule {
 	return []Rule{
 		NeverAllow().
+			Without("name", "init_first_stage_defaults").
 			Without("name", "init_first_stage").
+			Without("name", "init_first_stage.microdroid").
 			With("install_in_root", "true").
 			Because("install_in_root is only for init_first_stage."),
 	}
diff --git a/android/paths.go b/android/paths.go
index b8a119b..fda4d2f 100644
--- a/android/paths.go
+++ b/android/paths.go
@@ -1472,14 +1472,11 @@
 	ModuleName() string
 	ModuleDir() string
 	ModuleSubDir() string
+	SoongConfigTraceHash() string
 }
 
 func pathForModuleOut(ctx ModuleOutPathContext) OutputPath {
-	soongConfigHash := ""
-	if i, ok := ctx.(interface{ ModuleSoongConfigHash() string }); ok {
-		soongConfigHash = i.ModuleSoongConfigHash()
-	}
-	return PathForOutput(ctx, ".intermediates", ctx.ModuleDir(), ctx.ModuleName(), ctx.ModuleSubDir(), soongConfigHash)
+	return PathForOutput(ctx, ".intermediates", ctx.ModuleDir(), ctx.ModuleName(), ctx.ModuleSubDir(), ctx.SoongConfigTraceHash())
 }
 
 // PathForModuleOut returns a Path representing the paths... under the module's
diff --git a/android/variable.go b/android/variable.go
index 6362953..00315bc 100644
--- a/android/variable.go
+++ b/android/variable.go
@@ -431,8 +431,6 @@
 	EnforceInterPartitionJavaSdkLibrary *bool    `json:",omitempty"`
 	InterPartitionJavaLibraryAllowList  []string `json:",omitempty"`
 
-	InstallExtraFlattenedApexes *bool `json:",omitempty"`
-
 	BoardUsesRecoveryAsBoot *bool `json:",omitempty"`
 
 	BoardKernelBinaries                []string `json:",omitempty"`
@@ -479,8 +477,8 @@
 	ProductBrand        string   `json:",omitempty"`
 	BuildVersionTags    []string `json:",omitempty"`
 
-	ReleaseVersion               string   `json:",omitempty"`
-	ReleaseDeviceConfigValueSets []string `json:",omitempty"`
+	ReleaseVersion          string   `json:",omitempty"`
+	ReleaseAconfigValueSets []string `json:",omitempty"`
 }
 
 func boolPtr(v bool) *bool {
diff --git a/apex/apex.go b/apex/apex.go
index 32d7250..51c67d0 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -2151,10 +2151,6 @@
 		} else {
 			a.suffix = ""
 			a.primaryApexType = true
-
-			if ctx.Config().InstallExtraFlattenedApexes() {
-				a.makeModulesToInstall = append(a.makeModulesToInstall, a.Name()+flattenedSuffix)
-			}
 		}
 	case zipApex:
 		if proptools.String(a.properties.Payload_type) == "zip" {
diff --git a/apex/apex_test.go b/apex/apex_test.go
index 149b177..984ca41 100644
--- a/apex/apex_test.go
+++ b/apex/apex_test.go
@@ -6122,32 +6122,6 @@
 	ensureContainsOnce(t, flatAndroidMk, "LOCAL_TEST_DATA := :testdata/baz\n")
 }
 
-func TestInstallExtraFlattenedApexes(t *testing.T) {
-	ctx := testApex(t, `
-		apex {
-			name: "myapex",
-			key: "myapex.key",
-			updatable: false,
-		}
-		apex_key {
-			name: "myapex.key",
-			public_key: "testkey.avbpubkey",
-			private_key: "testkey.pem",
-		}
-	`,
-		android.FixtureModifyProductVariables(func(variables android.FixtureProductVariables) {
-			variables.InstallExtraFlattenedApexes = proptools.BoolPtr(true)
-		}),
-	)
-	ab := ctx.ModuleForTests("myapex", "android_common_myapex_image").Module().(*apexBundle)
-	ensureListContains(t, ab.makeModulesToInstall, "myapex.flattened")
-	mk := android.AndroidMkDataForTest(t, ctx, ab)
-	var builder strings.Builder
-	mk.Custom(&builder, ab.Name(), "TARGET_", "", mk)
-	androidMk := builder.String()
-	ensureContains(t, androidMk, "LOCAL_REQUIRED_MODULES := apex_manifest.pb.myapex apex_pubkey.myapex myapex.flattened\n")
-}
-
 func TestErrorsIfDepsAreNotEnabled(t *testing.T) {
 	testApexError(t, `module "myapex" .* depends on disabled module "libfoo"`, `
 		apex {
diff --git a/apex/deapexer.go b/apex/deapexer.go
index fed9cd1..3b7c77d 100644
--- a/apex/deapexer.go
+++ b/apex/deapexer.go
@@ -140,7 +140,6 @@
 			Tool(android.PathForSource(ctx, "build/soong/scripts/unpack-prebuilt-apex.sh")).
 			BuiltTool("deapexer").
 			BuiltTool("debugfs").
-			BuiltTool("blkid").
 			BuiltTool("fsck.erofs").
 			Input(p.inputApex).
 			Text(deapexerOutput.String())
diff --git a/bp2build/build_conversion.go b/bp2build/build_conversion.go
index a860484..46a5bd8 100644
--- a/bp2build/build_conversion.go
+++ b/bp2build/build_conversion.go
@@ -28,6 +28,7 @@
 	"android/soong/android"
 	"android/soong/bazel"
 	"android/soong/starlark_fmt"
+	"android/soong/ui/metrics/bp2build_metrics_proto"
 	"github.com/google/blueprint"
 	"github.com/google/blueprint/proptools"
 )
@@ -283,12 +284,15 @@
 				// target in a BUILD file, we don't autoconvert them.
 
 				// Log the module.
-				metrics.AddConvertedModule(m, moduleType, dir, Handcrafted)
+				metrics.AddUnconvertedModule(m, moduleType, dir,
+					android.UnconvertedReason{
+						ReasonType: int(bp2build_metrics_proto.UnconvertedReasonType_DEFINED_IN_BUILD_FILE),
+					})
 			} else if aModule, ok := m.(android.Module); ok && aModule.IsConvertedByBp2build() {
 				// Handle modules converted to generated targets.
 
 				// Log the module.
-				metrics.AddConvertedModule(aModule, moduleType, dir, Generated)
+				metrics.AddConvertedModule(aModule, moduleType, dir)
 
 				// Handle modules with unconverted deps. By default, emit a warning.
 				if unconvertedDeps := aModule.GetUnconvertedBp2buildDeps(); len(unconvertedDeps) > 0 {
@@ -324,8 +328,18 @@
 			} else if _, ok := ctx.Config().BazelModulesForceEnabledByFlag()[m.Name()]; ok && m.Name() != "" {
 				err := fmt.Errorf("Force Enabled Module %s not converted", m.Name())
 				errs = append(errs, err)
+			} else if aModule, ok := m.(android.Module); ok {
+				reason := aModule.GetUnconvertedReason()
+				if reason == nil {
+					panic(fmt.Errorf("module '%s' was neither converted nor marked unconvertible with bp2build", aModule.Name()))
+				} else {
+					metrics.AddUnconvertedModule(m, moduleType, dir, *reason)
+				}
+				return
 			} else {
-				metrics.AddUnconvertedModule(moduleType)
+				metrics.AddUnconvertedModule(m, moduleType, dir, android.UnconvertedReason{
+					ReasonType: int(bp2build_metrics_proto.UnconvertedReasonType_TYPE_UNSUPPORTED),
+				})
 				return
 			}
 		case QueryView:
diff --git a/bp2build/cc_binary_conversion_test.go b/bp2build/cc_binary_conversion_test.go
index f89d42c..ab6e4a5 100644
--- a/bp2build/cc_binary_conversion_test.go
+++ b/bp2build/cc_binary_conversion_test.go
@@ -1126,6 +1126,26 @@
 	})
 }
 
+func TestCcBinaryExplicitlyDisablesCfiWhenFalse(t *testing.T) {
+	runCcBinaryTestCase(t, ccBinaryBp2buildTestCase{
+		description: "cc_binary disables cfi when explciitly set to false in the bp",
+		blueprint: `
+{rule_name} {
+	name: "foo",
+	sanitize: {
+		cfi: false,
+	},
+}
+`,
+		targets: []testBazelTarget{
+			{"cc_binary", "foo", AttrNameToString{
+				"features":       `["-android_cfi"]`,
+				"local_includes": `["."]`,
+			}},
+		},
+	})
+}
+
 func TestCcBinaryStem(t *testing.T) {
 	runCcBinaryTestCase(t, ccBinaryBp2buildTestCase{
 		description: "cc_binary with stem property",
diff --git a/bp2build/cc_library_conversion_test.go b/bp2build/cc_library_conversion_test.go
index 24e91f5..1e3d72e 100644
--- a/bp2build/cc_library_conversion_test.go
+++ b/bp2build/cc_library_conversion_test.go
@@ -4839,6 +4839,32 @@
 	})
 }
 
+func TestCcLibraryExplicitlyDisablesCfiWhenFalse(t *testing.T) {
+	runCcLibraryTestCase(t, Bp2buildTestCase{
+		Description:                "cc_library disables cfi when explciitly set to false in the bp",
+		ModuleTypeUnderTest:        "cc_library",
+		ModuleTypeUnderTestFactory: cc.LibraryFactory,
+		Blueprint: `
+cc_library {
+	name: "foo",
+	sanitize: {
+		cfi: false,
+	},
+}
+`,
+		ExpectedBazelTargets: []string{
+			MakeBazelTarget("cc_library_static", "foo_bp2build_cc_library_static", AttrNameToString{
+				"features":       `["-android_cfi"]`,
+				"local_includes": `["."]`,
+			}),
+			MakeBazelTarget("cc_library_shared", "foo", AttrNameToString{
+				"features":       `["-android_cfi"]`,
+				"local_includes": `["."]`,
+			}),
+		},
+	})
+}
+
 func TestCcLibraryWithStem(t *testing.T) {
 	runCcLibraryTestCase(t, Bp2buildTestCase{
 		Description:                "cc_library with stem property",
diff --git a/bp2build/cc_library_shared_conversion_test.go b/bp2build/cc_library_shared_conversion_test.go
index a828855..a16cfb3 100644
--- a/bp2build/cc_library_shared_conversion_test.go
+++ b/bp2build/cc_library_shared_conversion_test.go
@@ -1535,3 +1535,23 @@
 		},
 	})
 }
+
+func TestCcLibrarySharedExplicitlyDisablesCfiWhenFalse(t *testing.T) {
+	runCcLibrarySharedTestCase(t, Bp2buildTestCase{
+		Description: "cc_library_shared disables cfi when explciitly set to false in the bp",
+		Blueprint: `
+cc_library_shared {
+	name: "foo",
+	sanitize: {
+		cfi: false,
+	},
+}
+`,
+		ExpectedBazelTargets: []string{
+			MakeBazelTarget("cc_library_shared", "foo", AttrNameToString{
+				"features":       `["-android_cfi"]`,
+				"local_includes": `["."]`,
+			}),
+		},
+	})
+}
diff --git a/bp2build/cc_library_static_conversion_test.go b/bp2build/cc_library_static_conversion_test.go
index afe76e5..b473f27 100644
--- a/bp2build/cc_library_static_conversion_test.go
+++ b/bp2build/cc_library_static_conversion_test.go
@@ -2165,3 +2165,23 @@
 		},
 	})
 }
+
+func TestCcLibraryStaticExplicitlyDisablesCfiWhenFalse(t *testing.T) {
+	runCcLibraryStaticTestCase(t, Bp2buildTestCase{
+		Description: "cc_library_static disables cfi when explciitly set to false in the bp",
+		Blueprint: `
+cc_library_static {
+	name: "foo",
+	sanitize: {
+		cfi: false,
+	},
+}
+`,
+		ExpectedBazelTargets: []string{
+			MakeBazelTarget("cc_library_static", "foo", AttrNameToString{
+				"features":       `["-android_cfi"]`,
+				"local_includes": `["."]`,
+			}),
+		},
+	})
+}
diff --git a/bp2build/conversion.go b/bp2build/conversion.go
index f598332..d5f2386 100644
--- a/bp2build/conversion.go
+++ b/bp2build/conversion.go
@@ -73,7 +73,6 @@
 	files = append(files, newFile("api_levels", "platform_versions.bzl", platformVersionContents(cfg)))
 
 	files = append(files, newFile("allowlists", GeneratedBuildFileName, ""))
-	files = append(files, newFile("allowlists", "env.bzl", android.EnvironmentVarsFile(cfg)))
 	// TODO(b/262781701): Create an alternate soong_build entrypoint for writing out these files only when requested
 	files = append(files, newFile("allowlists", "mixed_build_prod_allowlist.txt", strings.Join(android.GetBazelEnabledModules(android.BazelProdMode), "\n")+"\n"))
 	files = append(files, newFile("allowlists", "mixed_build_staging_allowlist.txt", strings.Join(android.GetBazelEnabledModules(android.BazelStagingMode), "\n")+"\n"))
diff --git a/bp2build/conversion_test.go b/bp2build/conversion_test.go
index 379f83b..00ffd79 100644
--- a/bp2build/conversion_test.go
+++ b/bp2build/conversion_test.go
@@ -167,10 +167,6 @@
 		},
 		{
 			dir:      "allowlists",
-			basename: "env.bzl",
-		},
-		{
-			dir:      "allowlists",
 			basename: "mixed_build_prod_allowlist.txt",
 		},
 		{
diff --git a/bp2build/metrics.go b/bp2build/metrics.go
index a020650..00f21c8 100644
--- a/bp2build/metrics.go
+++ b/bp2build/metrics.go
@@ -38,6 +38,7 @@
 			RuleClassCount:           make(map[string]uint64),
 			ConvertedModuleTypeCount: make(map[string]uint64),
 			TotalModuleTypeCount:     make(map[string]uint64),
+			UnconvertedModules:       make(map[string]*bp2build_metrics_proto.UnconvertedReason),
 		},
 		convertedModulePathMap: make(map[string]string),
 	}
@@ -149,11 +150,6 @@
 	metrics.serialized.Events = append(metrics.serialized.Events, event)
 }
 
-func (metrics *CodegenMetrics) AddUnconvertedModule(moduleType string) {
-	metrics.serialized.UnconvertedModuleCount += 1
-	metrics.serialized.TotalModuleTypeCount[moduleType] += 1
-}
-
 func (metrics *CodegenMetrics) SetSymlinkCount(n uint64) {
 	if m := metrics.serialized.WorkspaceSymlinkCount; m != 0 {
 		fmt.Fprintf(os.Stderr, "unexpected non-zero workspaceSymlinkCount of %d", m)
@@ -187,7 +183,7 @@
 	Handcrafted
 )
 
-func (metrics *CodegenMetrics) AddConvertedModule(m blueprint.Module, moduleType string, dir string, conversionType ConversionType) {
+func (metrics *CodegenMetrics) AddConvertedModule(m blueprint.Module, moduleType string, dir string) {
 	//a package module has empty name
 	if moduleType == "package" {
 		return
@@ -198,10 +194,25 @@
 	metrics.convertedModulePathMap[moduleName] = "//" + dir
 	metrics.serialized.ConvertedModuleTypeCount[moduleType] += 1
 	metrics.serialized.TotalModuleTypeCount[moduleType] += 1
+	metrics.serialized.GeneratedModuleCount += 1
+}
 
-	if conversionType == Handcrafted {
+func (metrics *CodegenMetrics) AddUnconvertedModule(m blueprint.Module, moduleType string, dir string,
+	reason android.UnconvertedReason) {
+	//a package module has empty name
+	if moduleType == "package" {
+		return
+	}
+	// Undo prebuilt_ module name prefix modifications
+	moduleName := android.RemoveOptionalPrebuiltPrefix(m.Name())
+	metrics.serialized.UnconvertedModules[moduleName] = &bp2build_metrics_proto.UnconvertedReason{
+		Type:   bp2build_metrics_proto.UnconvertedReasonType(reason.ReasonType),
+		Detail: reason.Detail,
+	}
+	metrics.serialized.UnconvertedModuleCount += 1
+	metrics.serialized.TotalModuleTypeCount[moduleType] += 1
+
+	if reason.ReasonType == int(bp2build_metrics_proto.UnconvertedReasonType_DEFINED_IN_BUILD_FILE) {
 		metrics.serialized.HandCraftedModuleCount += 1
-	} else if conversionType == Generated {
-		metrics.serialized.GeneratedModuleCount += 1
 	}
 }
diff --git a/bp2build/testing.go b/bp2build/testing.go
index f3263a1..140b214 100644
--- a/bp2build/testing.go
+++ b/bp2build/testing.go
@@ -78,7 +78,7 @@
 	ModuleTypeUnderTestFactory android.ModuleFactory
 	// Text to add to the toplevel, root Android.bp file. If Dir is not set, all
 	// ExpectedBazelTargets are assumed to be generated by this file.
-	Blueprint            string
+	Blueprint string
 	// ExpectedBazelTargets compares the BazelTargets generated in `Dir` (if not empty).
 	// Otherwise, it checks the BazelTargets generated by `Blueprint` in the root directory.
 	ExpectedBazelTargets []string
@@ -146,6 +146,10 @@
 				})
 			}
 			ctx.RegisterBp2BuildConfig(bp2buildConfig)
+			// This setting is added to bp2build invocations. It prevents bp2build
+			// from cloning modules to their original state after mutators run. This
+			// would lose some data intentionally set by these mutators.
+			ctx.SkipCloneModulesAfterMutators = true
 		}),
 		android.FixtureModifyEnv(func(env map[string]string) {
 			if tc.UnconvertedDepsMode == errorModulesUnconvertedDeps {
@@ -210,7 +214,11 @@
 		return
 	}
 
-	codegenCtx := NewCodegenContext(config, ctx.Context, Bp2Build, "")
+	codegenMode := Bp2Build
+	if ctx.Config().BuildMode == android.ApiBp2build {
+		codegenMode = ApiBp2build
+	}
+	codegenCtx := NewCodegenContext(config, ctx.Context, codegenMode, "")
 	res, errs := GenerateBazelTargets(codegenCtx, false)
 	if bazelResult.CollateErrs(errs) {
 		return
diff --git a/cc/binary.go b/cc/binary.go
index 14f93e9..5ba33a2 100644
--- a/cc/binary.go
+++ b/cc/binary.go
@@ -609,6 +609,9 @@
 		baseAttrs.implementationDeps.Add(baseAttrs.protoDependency)
 	}
 
+	// binaries don't have implementation_whole_archive_deps
+	baseAttrs.wholeArchiveDeps.Append(baseAttrs.implementationWholeArchiveDeps)
+
 	attrs := binaryAttributes{
 		binaryLinkerAttrs: binaryLinkerAttrs,
 
diff --git a/cc/bp2build.go b/cc/bp2build.go
index eb91898..d09cdcd 100644
--- a/cc/bp2build.go
+++ b/cc/bp2build.go
@@ -1787,7 +1787,9 @@
 				blocklistFeatureSuffix := strings.Replace(strings.ToLower(*blocklist), ".", "_", -1)
 				features = append(features, "ubsan_blocklist_"+blocklistFeatureSuffix)
 			}
-			if proptools.Bool(sanitizerProps.Sanitize.Cfi) {
+			if sanitizerProps.Sanitize.Cfi != nil && !proptools.Bool(sanitizerProps.Sanitize.Cfi) {
+				features = append(features, "-android_cfi")
+			} else if proptools.Bool(sanitizerProps.Sanitize.Cfi) {
 				features = append(features, "android_cfi")
 				if proptools.Bool(sanitizerProps.Sanitize.Config.Cfi_assembly_support) {
 					features = append(features, "android_cfi_assembly_support")
diff --git a/cc/cc.go b/cc/cc.go
index a7fda2d..7bc8341 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -24,6 +24,7 @@
 	"strconv"
 	"strings"
 
+	"android/soong/ui/metrics/bp2build_metrics_proto"
 	"github.com/google/blueprint"
 	"github.com/google/blueprint/proptools"
 
@@ -4103,6 +4104,8 @@
 		} else {
 			sharedOrStaticLibraryBp2Build(ctx, c, false)
 		}
+	default:
+		ctx.MarkBp2buildUnconvertible(bp2build_metrics_proto.UnconvertedReasonType_TYPE_UNSUPPORTED, "")
 	}
 }
 
diff --git a/cc/cc_test.go b/cc/cc_test.go
index 2635b8f..7534db2 100644
--- a/cc/cc_test.go
+++ b/cc/cc_test.go
@@ -4981,7 +4981,7 @@
 	cppOnly := []string{"-fPIC", "${config.CommonGlobalCppflags}", "${config.DeviceGlobalCppflags}", "${config.ArmCppflags}"}
 
 	cflags := []string{"-Werror", "-std=candcpp"}
-	cstd := []string{"-std=gnu11", "-std=conly"}
+	cstd := []string{"-std=gnu17", "-std=conly"}
 	cppstd := []string{"-std=gnu++17", "-std=cpp", "-fno-rtti"}
 
 	lastIncludes := []string{
diff --git a/cc/config/global.go b/cc/config/global.go
index d63e324..8ff5f55 100644
--- a/cc/config/global.go
+++ b/cc/config/global.go
@@ -298,9 +298,9 @@
 		"-w",
 	}
 
-	CStdVersion               = "gnu11"
+	CStdVersion               = "gnu17"
 	CppStdVersion             = "gnu++17"
-	ExperimentalCStdVersion   = "gnu17"
+	ExperimentalCStdVersion   = "gnu2x"
 	ExperimentalCppStdVersion = "gnu++2a"
 
 	// prebuilts/clang default settings.
diff --git a/cc/sanitize.go b/cc/sanitize.go
index d391cf5..7dedd60 100644
--- a/cc/sanitize.go
+++ b/cc/sanitize.go
@@ -38,11 +38,11 @@
 	}
 	asanLdflags = []string{"-Wl,-u,__asan_preinit"}
 
+	// DO NOT ADD MLLVM FLAGS HERE! ADD THEM BELOW TO hwasanCommonFlags.
 	hwasanCflags = []string{
 		"-fno-omit-frame-pointer",
 		"-Wno-frame-larger-than=",
 		"-fsanitize-hwaddress-abi=platform",
-		"-mllvm", "-hwasan-use-after-scope=1",
 	}
 
 	// ThinLTO performs codegen during link time, thus these flags need to
@@ -60,6 +60,8 @@
 		// GlobalISel is the default at -O0 on aarch64.
 		"--aarch64-enable-global-isel-at-O=-1",
 		"-fast-isel=false",
+		"-hwasan-use-after-scope=1",
+		"-dom-tree-reachability-max-bbs-to-explore=128",
 	}
 
 	sanitizeIgnorelistPrefix = "-fsanitize-ignorelist="
@@ -882,13 +884,8 @@
 
 	if Bool(sanProps.Memtag_stack) {
 		flags.Local.CFlags = append(flags.Local.CFlags, memtagStackCommonFlags...)
-		// TODO(fmayer): remove -Wno-error once https://reviews.llvm.org/D127917 is in Android toolchain.
-		flags.Local.CFlags = append(flags.Local.CFlags, "-Wno-error=frame-larger-than")
 		flags.Local.AsFlags = append(flags.Local.AsFlags, memtagStackCommonFlags...)
 		flags.Local.LdFlags = append(flags.Local.LdFlags, memtagStackCommonFlags...)
-		// This works around LLD complaining about the stack frame size.
-		// TODO(fmayer): remove once https://reviews.llvm.org/D127917 is in Android toolchain.
-		flags.Local.LdFlags = append(flags.Local.LdFlags, "-Wl,--no-fatal-warnings")
 	}
 
 	if (Bool(sanProps.Memtag_heap) || Bool(sanProps.Memtag_stack)) && ctx.binary() {
diff --git a/cmd/multiproduct_kati/main.go b/cmd/multiproduct_kati/main.go
index 0212075..c3b0381 100644
--- a/cmd/multiproduct_kati/main.go
+++ b/cmd/multiproduct_kati/main.go
@@ -50,7 +50,6 @@
 
 var bazelMode = flag.Bool("bazel-mode", false, "use bazel for analysis of certain modules")
 var bazelModeStaging = flag.Bool("bazel-mode-staging", false, "use bazel for analysis of certain near-ready modules")
-var bazelModeDev = flag.Bool("bazel-mode-dev", false, "use bazel for analysis of a large number of modules (less stable)")
 
 var onlyConfig = flag.Bool("only-config", false, "Only run product config (not Soong or Kati)")
 var onlySoong = flag.Bool("only-soong", false, "Only run product config and Soong (not Kati)")
@@ -229,10 +228,6 @@
 		count++
 		str = "--bazel-mode-staging"
 	}
-	if *bazelModeDev {
-		count++
-		str = "--bazel-mode-dev"
-	}
 
 	if count > 1 {
 		// Can't set more than one
@@ -404,6 +399,9 @@
 	var wg sync.WaitGroup
 	for i := 0; i < jobs; i++ {
 		wg.Add(1)
+		// To smooth out the spikes in memory usage, skew the
+		// initial starting time of the jobs by a small amount.
+		time.Sleep(15 * time.Second)
 		go func() {
 			defer wg.Done()
 			for {
diff --git a/cmd/soong_build/main.go b/cmd/soong_build/main.go
index d2eadba..10a5762 100644
--- a/cmd/soong_build/main.go
+++ b/cmd/soong_build/main.go
@@ -86,7 +86,6 @@
 	flag.BoolVar(&cmdlineArgs.MultitreeBuild, "multitree-build", false, "this is a multitree build")
 	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.BazelModeDev, "bazel-mode-dev", false, "use bazel for analysis of a large number of modules (less stable)")
 	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.EnsureAllowlistIntegrity, "ensure-allowlist-integrity", false, "verify that allowlisted modules are mixed-built")
@@ -125,7 +124,8 @@
 		return ctx.Config().BazelContext.InvokeBazel(ctx.Config(), ctx)
 	}
 	ctx.SetBeforePrepareBuildActionsHook(bazelHook)
-	ninjaDeps := bootstrap.RunBlueprint(cmdlineArgs.Args, bootstrap.DoEverything, ctx.Context, ctx.Config())
+	ninjaDeps, err := bootstrap.RunBlueprint(cmdlineArgs.Args, bootstrap.DoEverything, ctx.Context, ctx.Config())
+	maybeQuit(err, "")
 	ninjaDeps = append(ninjaDeps, extraNinjaDeps...)
 
 	bazelPaths, err := readFileLines(ctx.Config().Getenv("BAZEL_DEPS_FILE"))
@@ -186,10 +186,11 @@
 	}
 
 	// Run the loading and analysis phase
-	ninjaDeps := bootstrap.RunBlueprint(cmdlineArgs.Args,
+	ninjaDeps, err := bootstrap.RunBlueprint(cmdlineArgs.Args,
 		bootstrap.StopBeforePrepareBuildActions,
 		ctx.Context,
 		ctx.Config())
+	maybeQuit(err, "")
 	ninjaDeps = append(ninjaDeps, extraNinjaDeps...)
 
 	// Add the globbed dependencies
@@ -219,7 +220,7 @@
 	// }
 	//
 	// If we don't generate f/b/api/BUILD, foo.contribution will be unbuildable.
-	err := createBazelWorkspace(codegenContext, absoluteApiBp2buildDir, true)
+	err = createBazelWorkspace(codegenContext, absoluteApiBp2buildDir, true)
 	maybeQuit(err, "")
 	ninjaDeps = append(ninjaDeps, codegenContext.AdditionalNinjaDeps()...)
 
@@ -413,12 +414,13 @@
 	defer ctx.EventHandler.End("globs_ninja_file")
 
 	globDir := bootstrap.GlobDirectory(ctx.Config().SoongOutDir(), globListDir)
-	bootstrap.WriteBuildGlobsNinjaFile(&bootstrap.GlobSingleton{
+	err := bootstrap.WriteBuildGlobsNinjaFile(&bootstrap.GlobSingleton{
 		GlobLister: ctx.Globs,
 		GlobFile:   globFile,
 		GlobDir:    globDir,
 		SrcDir:     ctx.SrcDir(),
 	}, ctx.Config())
+	maybeQuit(err, "")
 	return bootstrap.GlobFileListFiles(globDir)
 }
 
@@ -445,7 +447,8 @@
 		stopBefore = bootstrap.DoEverything
 	}
 
-	ninjaDeps := bootstrap.RunBlueprint(cmdlineArgs.Args, stopBefore, ctx.Context, ctx.Config())
+	ninjaDeps, err := bootstrap.RunBlueprint(cmdlineArgs.Args, stopBefore, ctx.Context, ctx.Config())
+	maybeQuit(err, "")
 	ninjaDeps = append(ninjaDeps, extraNinjaDeps...)
 
 	globListFiles := writeBuildGlobsNinjaFile(ctx)
@@ -532,8 +535,6 @@
 
 	var finalOutputFile string
 
-	writeSymlink := false
-
 	// Run Soong for a specific activity, like bp2build, queryview
 	// or the actual Soong build for the build.ninja file.
 	switch configuration.BuildMode {
@@ -556,13 +557,8 @@
 					maybeQuit(err, "")
 				}
 			}
-			writeSymlink = true
 		} else {
 			finalOutputFile = runSoongOnlyBuild(ctx, extraNinjaDeps)
-
-			if configuration.BuildMode == android.AnalysisNoBazel {
-				writeSymlink = true
-			}
 		}
 		writeMetrics(configuration, ctx.EventHandler, metricsDir)
 	}
@@ -579,24 +575,6 @@
 	// are ninja inputs to the main output file, then ninja would superfluously
 	// rebuild this output file on the next build invocation.
 	touch(shared.JoinPath(topDir, finalOutputFile))
-
-	// TODO(b/277029044): Remove this function once build.<product>.ninja lands
-	if writeSymlink {
-		writeBuildNinjaSymlink(configuration, finalOutputFile)
-	}
-}
-
-// TODO(b/277029044): Remove this function once build.<product>.ninja lands
-func writeBuildNinjaSymlink(config android.Config, source string) {
-	targetPath := shared.JoinPath(topDir, config.SoongOutDir(), "build.ninja")
-	sourcePath := shared.JoinPath(topDir, source)
-
-	if targetPath == sourcePath {
-		return
-	}
-
-	os.Remove(targetPath)
-	os.Symlink(sourcePath, targetPath)
 }
 
 func writeUsedEnvironmentFile(configuration android.Config) {
@@ -829,8 +807,9 @@
 		// from the regular Modules.
 		ctx.EventHandler.Do("bootstrap", func() {
 			blueprintArgs := cmdlineArgs
-			bootstrapDeps := bootstrap.RunBlueprint(blueprintArgs.Args,
+			bootstrapDeps, err := bootstrap.RunBlueprint(blueprintArgs.Args,
 				bootstrap.StopBeforePrepareBuildActions, ctx.Context, ctx.Config())
+			maybeQuit(err, "")
 			ninjaDeps = append(ninjaDeps, bootstrapDeps...)
 		})
 
diff --git a/device_config/Android.bp b/device_config/Android.bp
deleted file mode 100644
index 6c44454..0000000
--- a/device_config/Android.bp
+++ /dev/null
@@ -1,32 +0,0 @@
-package {
-    default_applicable_licenses: ["Android-Apache-2.0"],
-}
-
-bootstrap_go_package {
-    name: "soong-device_config",
-    pkgPath: "android/soong/device_config",
-    deps: [
-        "blueprint",
-        "blueprint-pathtools",
-        "sbox_proto",
-        "soong",
-        "soong-android",
-        "soong-bazel",
-        "soong-android",
-        "soong-java",
-    ],
-    srcs: [
-        "device_config_definitions.go",
-        "device_config_values.go",
-        "device_config_value_set.go",
-        "init.go",
-        "java_device_config_definitions_library.go",
-        "testing.go",
-    ],
-    testSrcs: [
-        "device_config_definitions_test.go",
-        "device_config_values_test.go",
-        "device_config_value_set_test.go",
-    ],
-    pluginFor: ["soong_build"],
-}
diff --git a/device_config/java_device_config_definitions_library.go b/device_config/java_device_config_definitions_library.go
deleted file mode 100644
index 6e48ece..0000000
--- a/device_config/java_device_config_definitions_library.go
+++ /dev/null
@@ -1,71 +0,0 @@
-// 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 device_config
-
-import (
-	"android/soong/android"
-	"android/soong/java"
-	"fmt"
-	"github.com/google/blueprint"
-)
-
-type definitionsTagType struct {
-	blueprint.BaseDependencyTag
-}
-
-var definitionsTag = definitionsTagType{}
-
-type JavaDeviceConfigDefinitionsLibraryProperties struct {
-	// name of the device_config_definitions module to generate a library for
-	Device_config_definitions string
-}
-
-type JavaDeviceConfigDefinitionsLibraryCallbacks struct {
-	properties JavaDeviceConfigDefinitionsLibraryProperties
-}
-
-func JavaDefinitionsLibraryFactory() android.Module {
-	callbacks := &JavaDeviceConfigDefinitionsLibraryCallbacks{}
-	return java.GeneratedJavaLibraryModuleFactory("java_device_config_definitions_library", callbacks, &callbacks.properties)
-}
-
-func (callbacks *JavaDeviceConfigDefinitionsLibraryCallbacks) DepsMutator(module *java.GeneratedJavaLibraryModule, ctx android.BottomUpMutatorContext) {
-	definitions := callbacks.properties.Device_config_definitions
-	if len(definitions) == 0 {
-		// TODO: Add test for this case
-		ctx.PropertyErrorf("device_config_definitions", "device_config_definitions property required")
-	} else {
-		ctx.AddDependency(ctx.Module(), definitionsTag, definitions)
-	}
-}
-
-func (callbacks *JavaDeviceConfigDefinitionsLibraryCallbacks) GenerateSourceJarBuildActions(ctx android.ModuleContext) android.Path {
-	// Get the values that came from the global RELEASE_DEVICE_CONFIG_VALUE_SETS flag
-	definitionsModules := ctx.GetDirectDepsWithTag(definitionsTag)
-	if len(definitionsModules) != 1 {
-		panic(fmt.Errorf("Exactly one device_config_definitions property required"))
-	}
-	definitions := ctx.OtherModuleProvider(definitionsModules[0], definitionsProviderKey).(definitionsProviderData)
-
-	srcJarPath := android.PathForModuleGen(ctx, ctx.ModuleName()+".srcjar")
-	ctx.Build(pctx, android.BuildParams{
-		Rule:        srcJarRule,
-		Input:       definitions.intermediatePath,
-		Output:      srcJarPath,
-		Description: "device_config.srcjar",
-	})
-
-	return srcJarPath
-}
diff --git a/genrule/allowlists.go b/genrule/allowlists.go
index 1fe30db..495bc19 100644
--- a/genrule/allowlists.go
+++ b/genrule/allowlists.go
@@ -56,7 +56,6 @@
 		"ImageProcessingJB-rscript",
 		"RSTest-rscript",
 		"BluetoothGeneratedDumpsysBinarySchema_bfbs",
-		"WmediumdServerProto_h",
 		"TracingVMProtoStub_h",
 		"FrontendStub_h",
 		"VehicleServerProtoStub_cc",
@@ -104,7 +103,6 @@
 		"FrontendStub_cc",
 		"OpenwrtControlServerProto_cc",
 		"OpenwrtControlServerProto_h",
-		"WmediumdServerProto_cc",
 		"c2hal_test_genc++",
 		"c2hal_test_genc++_headers",
 		"hidl2aidl_test_gen_aidl",
diff --git a/genrule/genrule.go b/genrule/genrule.go
index a7264cc..b29e2c9 100644
--- a/genrule/genrule.go
+++ b/genrule/genrule.go
@@ -1012,6 +1012,17 @@
 				break
 			}
 		}
+		bazelName := m.Name()
+		for _, out := range outs {
+			if out == bazelName {
+				// This is a workaround to circumvent a Bazel warning where a genrule's
+				// out may not have the same name as the target itself. This makes no
+				// difference for reverse dependencies, because they may depend on the
+				// out file by name.
+				bazelName = bazelName + "-gen"
+				break
+			}
+		}
 		attrs := &bazelGenruleAttributes{
 			Srcs:  srcs,
 			Outs:  outs,
@@ -1022,7 +1033,7 @@
 			Rule_class: "genrule",
 		}
 		ctx.CreateBazelTargetModule(props, android.CommonAttributes{
-			Name: m.Name(),
+			Name: bazelName,
 			Tags: tags,
 		}, attrs)
 	}
diff --git a/java/base.go b/java/base.go
index 3fd5a45..75e25e3 100644
--- a/java/base.go
+++ b/java/base.go
@@ -20,6 +20,7 @@
 	"strconv"
 	"strings"
 
+	"android/soong/ui/metrics/bp2build_metrics_proto"
 	"github.com/google/blueprint/pathtools"
 	"github.com/google/blueprint/proptools"
 
@@ -1385,12 +1386,20 @@
 		// prebuilt dependencies until we support modules in the platform build, so there shouldn't be
 		// any if len(jars) == 1.
 
+		// moduleStubLinkType determines if the module is the TopLevelStubLibrary generated
+		// from sdk_library. The TopLevelStubLibrary contains only one static lib,
+		// either with .from-source or .from-text suffix.
+		// outputFile should be agnostic to the build configuration,
+		// thus "combine" the single static lib in order to prevent the static lib from being exposed
+		// to the copy rules.
+		stub, _ := moduleStubLinkType(ctx.ModuleName())
+
 		// Transform the single path to the jar into an OutputPath as that is required by the following
 		// code.
-		if moduleOutPath, ok := jars[0].(android.ModuleOutPath); ok {
+		if moduleOutPath, ok := jars[0].(android.ModuleOutPath); ok && !stub {
 			// The path contains an embedded OutputPath so reuse that.
 			outputFile = moduleOutPath.OutputPath
-		} else if outputPath, ok := jars[0].(android.OutputPath); ok {
+		} else if outputPath, ok := jars[0].(android.OutputPath); ok && !stub {
 			// The path is an OutputPath so reuse it directly.
 			outputFile = outputPath
 		} else {
@@ -2205,5 +2214,7 @@
 		if testHost, ok := ctx.Module().(*TestHost); ok {
 			javaTestHostBp2Build(ctx, testHost)
 		}
+	default:
+		ctx.MarkBp2buildUnconvertible(bp2build_metrics_proto.UnconvertedReasonType_TYPE_UNSUPPORTED, "")
 	}
 }
diff --git a/java/sdk_library.go b/java/sdk_library.go
index 89da19a..a3d81ce 100644
--- a/java/sdk_library.go
+++ b/java/sdk_library.go
@@ -24,6 +24,8 @@
 	"strings"
 	"sync"
 
+	"android/soong/ui/metrics/bp2build_metrics_proto"
+
 	"github.com/google/blueprint"
 	"github.com/google/blueprint/proptools"
 
@@ -236,6 +238,10 @@
 	return scope.stubsLibraryModuleName(baseName) + ".from-text"
 }
 
+func (scope *apiScope) sourceStubLibraryModuleName(baseName string) string {
+	return scope.stubsLibraryModuleName(baseName) + ".from-source"
+}
+
 func (scope *apiScope) stubsLibraryModuleName(baseName string) string {
 	return baseName + scope.stubsLibraryModuleNameSuffix()
 }
@@ -861,6 +867,13 @@
 	return c.namingScheme.apiLibraryModuleName(apiScope, baseName)
 }
 
+// Name of the java_library module that compiles the stubs
+// generated from source Java files.
+func (c *commonToSdkLibraryAndImport) sourceStubLibraryModuleName(apiScope *apiScope) string {
+	baseName := c.module.BaseModuleName()
+	return c.namingScheme.sourceStubLibraryModuleName(apiScope, baseName)
+}
+
 // The component names for different outputs of the java_sdk_library.
 //
 // They are similar to the names used for the child modules it creates
@@ -1287,10 +1300,7 @@
 	for _, apiScope := range module.getGeneratedApiScopes(ctx) {
 		// Add dependencies to the stubs library
 		stubModuleName := module.stubsLibraryModuleName(apiScope)
-		// Use JavaApiLibraryName function to be redirected to stubs generated from .txt if applicable
-		if module.contributesToApiSurface(ctx.Config()) {
-			stubModuleName = android.JavaApiLibraryName(ctx.Config(), stubModuleName)
-		}
+
 		ctx.AddVariationDependencies(nil, apiScope.stubsTag, stubModuleName)
 
 		// Add a dependency on the stubs source in order to access both stubs source and api information.
@@ -1582,7 +1592,7 @@
 		}
 	}{}
 
-	props.Name = proptools.StringPtr(module.stubsLibraryModuleName(apiScope))
+	props.Name = proptools.StringPtr(module.sourceStubLibraryModuleName(apiScope))
 	props.Visibility = childModuleVisibility(module.sdkLibraryProperties.Stubs_library_visibility)
 	// sources are generated from the droiddoc
 	props.Srcs = []string{":" + module.stubsSourceModuleName(apiScope)}
@@ -1604,21 +1614,6 @@
 	// interop with older developer tools that don't support 1.9.
 	props.Java_version = proptools.StringPtr("1.8")
 
-	// The imports need to be compiled to dex if the java_sdk_library requests it.
-	compileDex := module.dexProperties.Compile_dex
-	if module.stubLibrariesCompiledForDex() {
-		compileDex = proptools.BoolPtr(true)
-	}
-	props.Compile_dex = compileDex
-
-	// Dist the class jar artifact for sdk builds.
-	if !Bool(module.sdkLibraryProperties.No_dist) {
-		props.Dist.Targets = []string{"sdk", "win_sdk"}
-		props.Dist.Dest = proptools.StringPtr(fmt.Sprintf("%v.jar", module.distStem()))
-		props.Dist.Dir = proptools.StringPtr(module.apiDistPath(apiScope))
-		props.Dist.Tag = proptools.StringPtr(".jar")
-	}
-
 	mctx.CreateModule(LibraryFactory, &props, module.sdkComponentPropertiesForChildLibrary())
 }
 
@@ -1704,7 +1699,6 @@
 		"MissingPermission",
 		"SdkConstant",
 		"Todo",
-		"Typo",
 		"UnavailableSymbol",
 	}
 	droidstubsArgs = append(droidstubsArgs, android.JoinWithPrefix(disabledWarnings, "--hide "))
@@ -1824,6 +1818,53 @@
 	mctx.CreateModule(ApiLibraryFactory, &props)
 }
 
+func (module *SdkLibrary) createTopLevelStubsLibrary(
+	mctx android.DefaultableHookContext, apiScope *apiScope, contributesToApiSurface bool) {
+	props := struct {
+		Name           *string
+		Visibility     []string
+		Sdk_version    *string
+		Static_libs    []string
+		System_modules *string
+		Dist           struct {
+			Targets []string
+			Dest    *string
+			Dir     *string
+			Tag     *string
+		}
+		Compile_dex *bool
+	}{}
+	props.Name = proptools.StringPtr(module.stubsLibraryModuleName(apiScope))
+	props.Visibility = childModuleVisibility(module.sdkLibraryProperties.Stubs_library_visibility)
+	sdkVersion := module.sdkVersionForStubsLibrary(mctx, apiScope)
+	props.Sdk_version = proptools.StringPtr(sdkVersion)
+
+	// Add the stub compiling java_library/java_api_library as static lib based on build config
+	staticLib := module.sourceStubLibraryModuleName(apiScope)
+	if mctx.Config().BuildFromTextStub() && contributesToApiSurface {
+		staticLib = module.apiLibraryModuleName(apiScope)
+	}
+	props.Static_libs = append(props.Static_libs, staticLib)
+	props.System_modules = module.deviceProperties.System_modules
+
+	// Dist the class jar artifact for sdk builds.
+	if !Bool(module.sdkLibraryProperties.No_dist) {
+		props.Dist.Targets = []string{"sdk", "win_sdk"}
+		props.Dist.Dest = proptools.StringPtr(fmt.Sprintf("%v.jar", module.distStem()))
+		props.Dist.Dir = proptools.StringPtr(module.apiDistPath(apiScope))
+		props.Dist.Tag = proptools.StringPtr(".jar")
+	}
+
+	// The imports need to be compiled to dex if the java_sdk_library requests it.
+	compileDex := module.dexProperties.Compile_dex
+	if module.stubLibrariesCompiledForDex() {
+		compileDex = proptools.BoolPtr(true)
+	}
+	props.Compile_dex = compileDex
+
+	mctx.CreateModule(LibraryFactory, &props, module.sdkComponentPropertiesForChildLibrary())
+}
+
 func (module *SdkLibrary) compareAgainstLatestApi(apiScope *apiScope) bool {
 	return !(apiScope.unstable || module.sdkLibraryProperties.Unsafe_ignore_missing_latest_api)
 }
@@ -2021,9 +2062,12 @@
 
 		module.createStubsLibrary(mctx, scope)
 
-		if module.contributesToApiSurface(mctx.Config()) {
+		contributesToApiSurface := module.contributesToApiSurface(mctx.Config())
+		if contributesToApiSurface {
 			module.createApiLibrary(mctx, scope)
 		}
+
+		module.createTopLevelStubsLibrary(mctx, scope, contributesToApiSurface)
 	}
 
 	if module.requiresRuntimeImplementationLibrary() {
@@ -2078,6 +2122,8 @@
 	stubsSourceModuleName(scope *apiScope, baseName string) string
 
 	apiLibraryModuleName(scope *apiScope, baseName string) string
+
+	sourceStubLibraryModuleName(scope *apiScope, baseName string) string
 }
 
 type defaultNamingScheme struct {
@@ -2095,9 +2141,15 @@
 	return scope.apiLibraryModuleName(baseName)
 }
 
+func (s *defaultNamingScheme) sourceStubLibraryModuleName(scope *apiScope, baseName string) string {
+	return scope.sourceStubLibraryModuleName(baseName)
+}
+
 var _ sdkLibraryComponentNamingScheme = (*defaultNamingScheme)(nil)
 
 func moduleStubLinkType(name string) (stub bool, ret sdkLinkType) {
+	name = strings.TrimSuffix(name, ".from-source")
+
 	// This suffix-based approach is fragile and could potentially mis-trigger.
 	// TODO(b/155164730): Clean this up when modules no longer reference sdk_lib stubs directly.
 	if strings.HasSuffix(name, apiScopePublic.stubsLibraryModuleNameSuffix()) {
@@ -2116,6 +2168,9 @@
 	if strings.HasSuffix(name, apiScopeTest.stubsLibraryModuleNameSuffix()) {
 		return true, javaSystem
 	}
+	if strings.HasSuffix(name, apiScopeSystemServer.stubsLibraryModuleNameSuffix()) {
+		return true, javaSystemServer
+	}
 	return false, javaPlatform
 }
 
@@ -2178,6 +2233,7 @@
 // java_sdk_library bp2build converter
 func (module *SdkLibrary) ConvertWithBp2build(ctx android.TopDownMutatorContext) {
 	if ctx.ModuleType() != "java_sdk_library" {
+		ctx.MarkBp2buildUnconvertible(bp2build_metrics_proto.UnconvertedReasonType_TYPE_UNSUPPORTED, "")
 		return
 	}
 
diff --git a/java/sdk_library_test.go b/java/sdk_library_test.go
index 141e16b..7ba1f6d 100644
--- a/java/sdk_library_test.go
+++ b/java/sdk_library_test.go
@@ -411,10 +411,9 @@
 		android.AssertStringListContainsEquals(t, "bad combined inputs for "+sdklib, combineJarInputs, depPath, combined)
 	}
 	for _, expectation := range expectations {
-		verify("sdklib", expectation.lib, expectation.on_impl_classpath, expectation.in_impl_combined)
 		verify("sdklib.impl", expectation.lib, expectation.on_impl_classpath, expectation.in_impl_combined)
 
-		stubName := apiScopePublic.stubsLibraryModuleName("sdklib")
+		stubName := apiScopePublic.sourceStubLibraryModuleName("sdklib")
 		verify(stubName, expectation.lib, expectation.on_stub_classpath, expectation.in_stub_combined)
 	}
 }
diff --git a/linkerconfig/linkerconfig.go b/linkerconfig/linkerconfig.go
index 412a23b..165697d 100644
--- a/linkerconfig/linkerconfig.go
+++ b/linkerconfig/linkerconfig.go
@@ -19,6 +19,7 @@
 	"sort"
 	"strings"
 
+	"android/soong/ui/metrics/bp2build_metrics_proto"
 	"github.com/google/blueprint/proptools"
 
 	"android/soong/android"
@@ -109,6 +110,7 @@
 func (l *linkerConfig) ConvertWithBp2build(ctx android.TopDownMutatorContext) {
 	if l.properties.Src == nil {
 		ctx.PropertyErrorf("src", "empty src is not supported")
+		ctx.MarkBp2buildUnconvertible(bp2build_metrics_proto.UnconvertedReasonType_UNSUPPORTED, "")
 		return
 	}
 	src := android.BazelLabelForModuleSrcSingle(ctx, *l.properties.Src)
diff --git a/rust/library.go b/rust/library.go
index 5e445a9..331763a 100644
--- a/rust/library.go
+++ b/rust/library.go
@@ -25,8 +25,7 @@
 )
 
 var (
-	DylibStdlibSuffix = ".dylib-std"
-	RlibStdlibSuffix  = ".rlib-std"
+	RlibStdlibSuffix = ".rlib-std"
 )
 
 func init() {
@@ -756,7 +755,6 @@
 					dylib.Disable()
 				}
 				rlib.Properties.RustSubName += RlibStdlibSuffix
-				dylib.Properties.RustSubName += DylibStdlibSuffix
 			}
 		}
 	}
diff --git a/rust/library_test.go b/rust/library_test.go
index d4b525f..add7173 100644
--- a/rust/library_test.go
+++ b/rust/library_test.go
@@ -247,10 +247,10 @@
 		if !android.InList("libbar", dyn.Module().(*Module).Properties.AndroidMkDylibs) {
 			t.Errorf("libbar not present as dynamic dependency in dynamic lib")
 		}
-		if android.InList("libbar.dylib-std", dyn.Module().(*Module).Properties.AndroidMkRlibs) {
+		if android.InList("libbar", dyn.Module().(*Module).Properties.AndroidMkRlibs) {
 			t.Errorf("libbar present as rlib dependency in dynamic lib")
 		}
-		if !android.InList("librlib_only.dylib-std", dyn.Module().(*Module).Properties.AndroidMkRlibs) {
+		if !android.InList("librlib_only", dyn.Module().(*Module).Properties.AndroidMkRlibs) {
 			t.Errorf("librlib_only should be selected by rustlibs as an rlib.")
 		}
 	}
diff --git a/rust/rust_test.go b/rust/rust_test.go
index 2a38b89..64f90b6 100644
--- a/rust/rust_test.go
+++ b/rust/rust_test.go
@@ -377,11 +377,11 @@
 
 	// Check that our bindings are picked up as crate dependencies as well
 	libfooMod := ctx.ModuleForTests("libfoo", "android_arm64_armv8-a_dylib").Module().(*Module)
-	if !android.InList("libbindings.dylib-std", libfooMod.Properties.AndroidMkRlibs) {
+	if !android.InList("libbindings", libfooMod.Properties.AndroidMkRlibs) {
 		t.Errorf("bindgen dependency not detected as a rlib dependency (dependency missing from AndroidMkRlibs)")
 	}
 	fizzBuzzMod := ctx.ModuleForTests("fizz-buzz-dep", "android_arm64_armv8-a").Module().(*Module)
-	if !android.InList("libbindings.dylib-std", fizzBuzzMod.Properties.AndroidMkRlibs) {
+	if !android.InList("libbindings", fizzBuzzMod.Properties.AndroidMkRlibs) {
 		t.Errorf("bindgen dependency not detected as a rlib dependency (dependency missing from AndroidMkRlibs)")
 	}
 	libprocmacroMod := ctx.ModuleForTests("libprocmacro", "linux_glibc_x86_64").Module().(*Module)
diff --git a/scripts/unpack-prebuilt-apex.sh b/scripts/unpack-prebuilt-apex.sh
index b244f79..2a20e45 100755
--- a/scripts/unpack-prebuilt-apex.sh
+++ b/scripts/unpack-prebuilt-apex.sh
@@ -18,17 +18,16 @@
 
 # Tool to unpack an apex file and verify that the required files were extracted.
 if [ $# -lt 7 ]; then
-  echo "usage: $0 <deapaxer_path> <debugfs_path> <blkid_path> <fsck.erofs_path> <apex file> <output_dir> <required_files>+" >&2
+  echo "usage: $0 <deapaxer_path> <debugfs_path> <fsck.erofs_path> <apex file> <output_dir> <required_files>+" >&2
   exit 1
 fi
 
 DEAPEXER_PATH=$1
 DEBUGFS_PATH=$2
-BLKID_PATH=$3
-FSCK_EROFS_PATH=$4
-APEX_FILE=$5
-OUTPUT_DIR=$6
-shift 6
+FSCK_EROFS_PATH=$3
+APEX_FILE=$4
+OUTPUT_DIR=$5
+shift 5
 REQUIRED_PATHS=$@
 
 rm -fr $OUTPUT_DIR
@@ -36,7 +35,6 @@
 
 # Unpack the apex file contents.
 $DEAPEXER_PATH --debugfs_path $DEBUGFS_PATH \
-               --blkid_path $BLKID_PATH \
                --fsckerofs_path $FSCK_EROFS_PATH \
                extract $APEX_FILE $OUTPUT_DIR
 
diff --git a/sdk/bootclasspath_fragment_sdk_test.go b/sdk/bootclasspath_fragment_sdk_test.go
index bef82d6..894109a 100644
--- a/sdk/bootclasspath_fragment_sdk_test.go
+++ b/sdk/bootclasspath_fragment_sdk_test.go
@@ -489,13 +489,13 @@
 .intermediates/mybootclasspathfragment/android_common/modular-hiddenapi/filtered-stub-flags.csv -> hiddenapi/filtered-stub-flags.csv
 .intermediates/mybootclasspathfragment/android_common/modular-hiddenapi/filtered-flags.csv -> hiddenapi/filtered-flags.csv
 .intermediates/mysdk/common_os/empty -> java_boot_libs/snapshot/jars/are/invalid/mybootlib.jar
-.intermediates/myothersdklibrary.stubs/android_common/javac/myothersdklibrary.stubs.jar -> sdk_library/public/myothersdklibrary-stubs.jar
+.intermediates/myothersdklibrary.stubs/android_common/combined/myothersdklibrary.stubs.jar -> sdk_library/public/myothersdklibrary-stubs.jar
 .intermediates/myothersdklibrary.stubs.source/android_common/metalava/myothersdklibrary.stubs.source_api.txt -> sdk_library/public/myothersdklibrary.txt
 .intermediates/myothersdklibrary.stubs.source/android_common/metalava/myothersdklibrary.stubs.source_removed.txt -> sdk_library/public/myothersdklibrary-removed.txt
-.intermediates/mysdklibrary.stubs/android_common/javac/mysdklibrary.stubs.jar -> sdk_library/public/mysdklibrary-stubs.jar
+.intermediates/mysdklibrary.stubs/android_common/combined/mysdklibrary.stubs.jar -> sdk_library/public/mysdklibrary-stubs.jar
 .intermediates/mysdklibrary.stubs.source/android_common/metalava/mysdklibrary.stubs.source_api.txt -> sdk_library/public/mysdklibrary.txt
 .intermediates/mysdklibrary.stubs.source/android_common/metalava/mysdklibrary.stubs.source_removed.txt -> sdk_library/public/mysdklibrary-removed.txt
-.intermediates/mycoreplatform.stubs/android_common/javac/mycoreplatform.stubs.jar -> sdk_library/public/mycoreplatform-stubs.jar
+.intermediates/mycoreplatform.stubs/android_common/combined/mycoreplatform.stubs.jar -> sdk_library/public/mycoreplatform-stubs.jar
 .intermediates/mycoreplatform.stubs.source/android_common/metalava/mycoreplatform.stubs.source_api.txt -> sdk_library/public/mycoreplatform.txt
 .intermediates/mycoreplatform.stubs.source/android_common/metalava/mycoreplatform.stubs.source_removed.txt -> sdk_library/public/mycoreplatform-removed.txt
 `)
@@ -509,13 +509,13 @@
 .intermediates/mybootclasspathfragment/android_common_myapex/modular-hiddenapi/filtered-stub-flags.csv -> hiddenapi/filtered-stub-flags.csv
 .intermediates/mybootclasspathfragment/android_common_myapex/modular-hiddenapi/filtered-flags.csv -> hiddenapi/filtered-flags.csv
 .intermediates/mysdk/common_os/empty -> java_boot_libs/snapshot/jars/are/invalid/mybootlib.jar
-.intermediates/myothersdklibrary.stubs/android_common/javac/myothersdklibrary.stubs.jar -> sdk_library/public/myothersdklibrary-stubs.jar
+.intermediates/myothersdklibrary.stubs/android_common/combined/myothersdklibrary.stubs.jar -> sdk_library/public/myothersdklibrary-stubs.jar
 .intermediates/myothersdklibrary.stubs.source/android_common/metalava/myothersdklibrary.stubs.source_api.txt -> sdk_library/public/myothersdklibrary.txt
 .intermediates/myothersdklibrary.stubs.source/android_common/metalava/myothersdklibrary.stubs.source_removed.txt -> sdk_library/public/myothersdklibrary-removed.txt
-.intermediates/mysdklibrary.stubs/android_common/javac/mysdklibrary.stubs.jar -> sdk_library/public/mysdklibrary-stubs.jar
+.intermediates/mysdklibrary.stubs/android_common/combined/mysdklibrary.stubs.jar -> sdk_library/public/mysdklibrary-stubs.jar
 .intermediates/mysdklibrary.stubs.source/android_common/metalava/mysdklibrary.stubs.source_api.txt -> sdk_library/public/mysdklibrary.txt
 .intermediates/mysdklibrary.stubs.source/android_common/metalava/mysdklibrary.stubs.source_removed.txt -> sdk_library/public/mysdklibrary-removed.txt
-.intermediates/mycoreplatform.stubs/android_common/javac/mycoreplatform.stubs.jar -> sdk_library/public/mycoreplatform-stubs.jar
+.intermediates/mycoreplatform.stubs/android_common/combined/mycoreplatform.stubs.jar -> sdk_library/public/mycoreplatform-stubs.jar
 .intermediates/mycoreplatform.stubs.source/android_common/metalava/mycoreplatform.stubs.source_api.txt -> sdk_library/public/mycoreplatform.txt
 .intermediates/mycoreplatform.stubs.source/android_common/metalava/mycoreplatform.stubs.source_removed.txt -> sdk_library/public/mycoreplatform-removed.txt
 `
@@ -963,10 +963,10 @@
 .intermediates/mybootclasspathfragment/android_common/modular-hiddenapi/filtered-stub-flags.csv -> hiddenapi/filtered-stub-flags.csv
 .intermediates/mybootclasspathfragment/android_common/modular-hiddenapi/filtered-flags.csv -> hiddenapi/filtered-flags.csv
 .intermediates/mysdk/common_os/empty -> java_boot_libs/snapshot/jars/are/invalid/mybootlib.jar
-.intermediates/mynewlibrary.stubs/android_common/javac/mynewlibrary.stubs.jar -> sdk_library/public/mynewlibrary-stubs.jar
+.intermediates/mynewlibrary.stubs/android_common/combined/mynewlibrary.stubs.jar -> sdk_library/public/mynewlibrary-stubs.jar
 .intermediates/mynewlibrary.stubs.source/android_common/metalava/mynewlibrary.stubs.source_api.txt -> sdk_library/public/mynewlibrary.txt
 .intermediates/mynewlibrary.stubs.source/android_common/metalava/mynewlibrary.stubs.source_removed.txt -> sdk_library/public/mynewlibrary-removed.txt
-.intermediates/mysdklibrary.stubs/android_common/javac/mysdklibrary.stubs.jar -> sdk_library/public/mysdklibrary-stubs.jar
+.intermediates/mysdklibrary.stubs/android_common/combined/mysdklibrary.stubs.jar -> sdk_library/public/mysdklibrary-stubs.jar
 .intermediates/mysdklibrary.stubs.source/android_common/metalava/mysdklibrary.stubs.source_api.txt -> sdk_library/public/mysdklibrary.txt
 .intermediates/mysdklibrary.stubs.source/android_common/metalava/mysdklibrary.stubs.source_removed.txt -> sdk_library/public/mysdklibrary-removed.txt
 `),
@@ -1095,7 +1095,7 @@
 .intermediates/mybootclasspathfragment/android_common_myapex/modular-hiddenapi-for-sdk-snapshot/index.csv -> hiddenapi/index.csv
 .intermediates/mybootclasspathfragment/android_common_myapex/modular-hiddenapi-for-sdk-snapshot/stub-flags.csv -> hiddenapi/stub-flags.csv
 .intermediates/mybootclasspathfragment/android_common_myapex/modular-hiddenapi-for-sdk-snapshot/all-flags.csv -> hiddenapi/all-flags.csv
-.intermediates/mysdklibrary.stubs/android_common/javac/mysdklibrary.stubs.jar -> sdk_library/public/mysdklibrary-stubs.jar
+.intermediates/mysdklibrary.stubs/android_common/combined/mysdklibrary.stubs.jar -> sdk_library/public/mysdklibrary-stubs.jar
 .intermediates/mysdklibrary.stubs.source/android_common/metalava/mysdklibrary.stubs.source_api.txt -> sdk_library/public/mysdklibrary.txt
 .intermediates/mysdklibrary.stubs.source/android_common/metalava/mysdklibrary.stubs.source_removed.txt -> sdk_library/public/mysdklibrary-removed.txt
 `
@@ -1173,10 +1173,10 @@
 .intermediates/mybootclasspathfragment/android_common_myapex/modular-hiddenapi/signature-patterns.csv -> hiddenapi/signature-patterns.csv
 .intermediates/mybootclasspathfragment/android_common_myapex/modular-hiddenapi/filtered-stub-flags.csv -> hiddenapi/filtered-stub-flags.csv
 .intermediates/mybootclasspathfragment/android_common_myapex/modular-hiddenapi/filtered-flags.csv -> hiddenapi/filtered-flags.csv
-.intermediates/mysdklibrary.stubs/android_common/javac/mysdklibrary.stubs.jar -> sdk_library/public/mysdklibrary-stubs.jar
+.intermediates/mysdklibrary.stubs/android_common/combined/mysdklibrary.stubs.jar -> sdk_library/public/mysdklibrary-stubs.jar
 .intermediates/mysdklibrary.stubs.source/android_common/metalava/mysdklibrary.stubs.source_api.txt -> sdk_library/public/mysdklibrary.txt
 .intermediates/mysdklibrary.stubs.source/android_common/metalava/mysdklibrary.stubs.source_removed.txt -> sdk_library/public/mysdklibrary-removed.txt
-.intermediates/mynewsdklibrary.stubs/android_common/javac/mynewsdklibrary.stubs.jar -> sdk_library/public/mynewsdklibrary-stubs.jar
+.intermediates/mynewsdklibrary.stubs/android_common/combined/mynewsdklibrary.stubs.jar -> sdk_library/public/mynewsdklibrary-stubs.jar
 .intermediates/mynewsdklibrary.stubs.source/android_common/metalava/mynewsdklibrary.stubs.source_api.txt -> sdk_library/public/mynewsdklibrary.txt
 .intermediates/mynewsdklibrary.stubs.source/android_common/metalava/mynewsdklibrary.stubs.source_removed.txt -> sdk_library/public/mynewsdklibrary-removed.txt
 `
diff --git a/sdk/java_sdk_test.go b/sdk/java_sdk_test.go
index 6159ea9..c018671 100644
--- a/sdk/java_sdk_test.go
+++ b/sdk/java_sdk_test.go
@@ -696,7 +696,7 @@
 		checkAllCopyRules(`
 .intermediates/exported-system-module/android_common/turbine-combined/exported-system-module.jar -> java/exported-system-module.jar
 .intermediates/system-module/android_common/turbine-combined/system-module.jar -> java/system-module.jar
-.intermediates/myjavalib.stubs/android_common/javac/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs/android_common/combined/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_api.txt -> sdk_library/public/myjavalib.txt
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_removed.txt -> sdk_library/public/myjavalib-removed.txt
 `),
@@ -941,13 +941,13 @@
 }
 `),
 		checkAllCopyRules(`
-.intermediates/myjavalib.stubs/android_common/javac/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs/android_common/combined/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_api.txt -> sdk_library/public/myjavalib.txt
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_removed.txt -> sdk_library/public/myjavalib-removed.txt
-.intermediates/myjavalib.stubs.system/android_common/javac/myjavalib.stubs.system.jar -> sdk_library/system/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs.system/android_common/combined/myjavalib.stubs.system.jar -> sdk_library/system/myjavalib-stubs.jar
 .intermediates/myjavalib.stubs.source.system/android_common/metalava/myjavalib.stubs.source.system_api.txt -> sdk_library/system/myjavalib.txt
 .intermediates/myjavalib.stubs.source.system/android_common/metalava/myjavalib.stubs.source.system_removed.txt -> sdk_library/system/myjavalib-removed.txt
-.intermediates/myjavalib.stubs.test/android_common/javac/myjavalib.stubs.test.jar -> sdk_library/test/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs.test/android_common/combined/myjavalib.stubs.test.jar -> sdk_library/test/myjavalib-stubs.jar
 .intermediates/myjavalib.stubs.source.test/android_common/metalava/myjavalib.stubs.source.test_api.txt -> sdk_library/test/myjavalib.txt
 .intermediates/myjavalib.stubs.source.test/android_common/metalava/myjavalib.stubs.source.test_removed.txt -> sdk_library/test/myjavalib-removed.txt
 `),
@@ -999,7 +999,7 @@
 }
 `),
 		checkAllCopyRules(`
-.intermediates/myjavalib-foo.stubs/android_common/javac/myjavalib-foo.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
+.intermediates/myjavalib-foo.stubs/android_common/combined/myjavalib-foo.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
 .intermediates/myjavalib-foo.stubs.source/android_common/metalava/myjavalib-foo.stubs.source_api.txt -> sdk_library/public/myjavalib.txt
 .intermediates/myjavalib-foo.stubs.source/android_common/metalava/myjavalib-foo.stubs.source_removed.txt -> sdk_library/public/myjavalib-removed.txt
 `),
@@ -1052,7 +1052,7 @@
 }
 		`),
 		checkAllCopyRules(`
-.intermediates/myjavalib.stubs/android_common/javac/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs/android_common/combined/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source-stubs.srcjar -> sdk_library/public/myjavalib.srcjar
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_api.txt -> sdk_library/public/myjavalib.txt
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_removed.txt -> sdk_library/public/myjavalib-removed.txt
@@ -1100,7 +1100,7 @@
 }
 		`),
 		checkAllCopyRules(`
-.intermediates/myjavalib.stubs/android_common/javac/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs/android_common/combined/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_api.txt -> sdk_library/public/myjavalib.txt
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_removed.txt -> sdk_library/public/myjavalib-removed.txt
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_annotations.zip -> sdk_library/public/myjavalib_annotations.zip
@@ -1153,7 +1153,7 @@
 }
 		`),
 		checkAllCopyRules(`
-.intermediates/myjavalib.stubs/android_common/javac/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs/android_common/combined/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_api.txt -> sdk_library/public/myjavalib.txt
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_removed.txt -> sdk_library/public/myjavalib-removed.txt
 		`),
@@ -1270,7 +1270,7 @@
 }
 `),
 		checkAllCopyRules(`
-.intermediates/myjavalib.stubs/android_common/javac/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs/android_common/combined/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_api.txt -> sdk_library/public/myjavalib.txt
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_removed.txt -> sdk_library/public/myjavalib-removed.txt
 `),
@@ -1318,7 +1318,7 @@
 }
 `),
 		checkAllCopyRules(`
-.intermediates/myjavalib.stubs/android_common/javac/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs/android_common/combined/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_api.txt -> sdk_library/public/myjavalib.txt
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_removed.txt -> sdk_library/public/myjavalib-removed.txt
 `),
@@ -1376,10 +1376,10 @@
 }
 `),
 		checkAllCopyRules(`
-.intermediates/myjavalib.stubs/android_common/javac/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs/android_common/combined/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_api.txt -> sdk_library/public/myjavalib.txt
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_removed.txt -> sdk_library/public/myjavalib-removed.txt
-.intermediates/myjavalib.stubs.system/android_common/javac/myjavalib.stubs.system.jar -> sdk_library/system/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs.system/android_common/combined/myjavalib.stubs.system.jar -> sdk_library/system/myjavalib-stubs.jar
 .intermediates/myjavalib.stubs.source.system/android_common/metalava/myjavalib.stubs.source.system_api.txt -> sdk_library/system/myjavalib.txt
 .intermediates/myjavalib.stubs.source.system/android_common/metalava/myjavalib.stubs.source.system_removed.txt -> sdk_library/system/myjavalib-removed.txt
 `),
@@ -1448,13 +1448,13 @@
 }
 `),
 		checkAllCopyRules(`
-.intermediates/myjavalib.stubs/android_common/javac/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs/android_common/combined/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_api.txt -> sdk_library/public/myjavalib.txt
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_removed.txt -> sdk_library/public/myjavalib-removed.txt
-.intermediates/myjavalib.stubs.system/android_common/javac/myjavalib.stubs.system.jar -> sdk_library/system/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs.system/android_common/combined/myjavalib.stubs.system.jar -> sdk_library/system/myjavalib-stubs.jar
 .intermediates/myjavalib.stubs.source.system/android_common/metalava/myjavalib.stubs.source.system_api.txt -> sdk_library/system/myjavalib.txt
 .intermediates/myjavalib.stubs.source.system/android_common/metalava/myjavalib.stubs.source.system_removed.txt -> sdk_library/system/myjavalib-removed.txt
-.intermediates/myjavalib.stubs.module_lib/android_common/javac/myjavalib.stubs.module_lib.jar -> sdk_library/module-lib/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs.module_lib/android_common/combined/myjavalib.stubs.module_lib.jar -> sdk_library/module-lib/myjavalib-stubs.jar
 .intermediates/myjavalib.stubs.source.module_lib/android_common/metalava/myjavalib.stubs.source.module_lib_api.txt -> sdk_library/module-lib/myjavalib.txt
 .intermediates/myjavalib.stubs.source.module_lib/android_common/metalava/myjavalib.stubs.source.module_lib_removed.txt -> sdk_library/module-lib/myjavalib-removed.txt
 `),
@@ -1514,10 +1514,10 @@
 }
 `),
 		checkAllCopyRules(`
-.intermediates/myjavalib.stubs/android_common/javac/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs/android_common/combined/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_api.txt -> sdk_library/public/myjavalib.txt
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_removed.txt -> sdk_library/public/myjavalib-removed.txt
-.intermediates/myjavalib.stubs.system_server/android_common/javac/myjavalib.stubs.system_server.jar -> sdk_library/system-server/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs.system_server/android_common/combined/myjavalib.stubs.system_server.jar -> sdk_library/system-server/myjavalib-stubs.jar
 .intermediates/myjavalib.stubs.source.system_server/android_common/metalava/myjavalib.stubs.source.system_server_api.txt -> sdk_library/system-server/myjavalib.txt
 .intermediates/myjavalib.stubs.source.system_server/android_common/metalava/myjavalib.stubs.source.system_server_removed.txt -> sdk_library/system-server/myjavalib-removed.txt
 `),
@@ -1568,7 +1568,7 @@
 }
 `),
 		checkAllCopyRules(`
-.intermediates/myjavalib.stubs/android_common/javac/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs/android_common/combined/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_api.txt -> sdk_library/public/myjavalib.txt
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_removed.txt -> sdk_library/public/myjavalib-removed.txt
 `),
@@ -1625,7 +1625,7 @@
 }
 `),
 		checkAllCopyRules(`
-.intermediates/myjavalib.stubs/android_common/javac/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs/android_common/combined/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_api.txt -> sdk_library/public/myjavalib.txt
 .intermediates/myjavalib.stubs.source/android_common/metalava/myjavalib.stubs.source_removed.txt -> sdk_library/public/myjavalib-removed.txt
 docs/known_doctags -> doctags/docs/known_doctags
diff --git a/sdk/sdk_test.go b/sdk/sdk_test.go
index 108a664..5a25146 100644
--- a/sdk/sdk_test.go
+++ b/sdk/sdk_test.go
@@ -487,7 +487,7 @@
 .intermediates/mybootclasspathfragment/android_common/modular-hiddenapi/index.csv -> hiddenapi/index.csv
 .intermediates/mybootclasspathfragment/android_common/modular-hiddenapi/stub-flags.csv -> hiddenapi/stub-flags.csv
 .intermediates/mybootclasspathfragment/android_common/modular-hiddenapi/all-flags.csv -> hiddenapi/all-flags.csv
-.intermediates/mysdklibrary.stubs/android_common/javac/mysdklibrary.stubs.jar -> sdk_library/public/mysdklibrary-stubs.jar
+.intermediates/mysdklibrary.stubs/android_common/combined/mysdklibrary.stubs.jar -> sdk_library/public/mysdklibrary-stubs.jar
 .intermediates/mysdklibrary.stubs.source/android_common/metalava/mysdklibrary.stubs.source_api.txt -> sdk_library/public/mysdklibrary.txt
 .intermediates/mysdklibrary.stubs.source/android_common/metalava/mysdklibrary.stubs.source_removed.txt -> sdk_library/public/mysdklibrary-removed.txt
 `),
diff --git a/tests/genrule_sandbox_test.py b/tests/genrule_sandbox_test.py
index 697fc26..a9f0c9b 100755
--- a/tests/genrule_sandbox_test.py
+++ b/tests/genrule_sandbox_test.py
@@ -69,7 +69,7 @@
     name = mod["Name"]
     if name in modules:
       for act in mod["Module"]["Actions"]:
-        if "}generate " in act["Desc"]:
+        if "}generate" in act["Desc"]:
           module_to_outs[name].update(act["Outputs"])
   return module_to_outs
 
@@ -90,6 +90,7 @@
 
 
 def _diff_outs(file1, file2, show_diff):
+  output = None
   base_args = ["diff"]
   if not show_diff:
     base_args.append("--brief")
@@ -154,6 +155,10 @@
   modules = set(args.modules)
 
   module_to_outs = _find_outputs_for_modules(modules, out_dir, target_product)
+  if not module_to_outs:
+    print("No outputs found")
+    exit(1)
+
   if args.output_paths_only:
     for m, o in module_to_outs.items():
       print(f"{m} outputs: {o}")
diff --git a/third_party/zip/android_test.go b/third_party/zip/android_test.go
index 46588d4..3911dd4 100644
--- a/third_party/zip/android_test.go
+++ b/third_party/zip/android_test.go
@@ -190,7 +190,9 @@
 		t.Errorf("wanted directoryRecords %d, got %d", w, g)
 	}
 
-	if g, w := d.directorySize, uint64(uint32max); g != w {
+	zip64ExtraBuf := 48                                                  // 4x uint16 + 5x uint64
+	expectedDirSize := directoryHeaderLen + zip64ExtraBuf + len("large") // name of header
+	if g, w := d.directorySize, uint64(expectedDirSize); g != w {
 		t.Errorf("wanted directorySize %d, got %d", w, g)
 	}
 
diff --git a/tradefed/autogen.go b/tradefed/autogen.go
index 3c55c51..ddd0a80 100644
--- a/tradefed/autogen.go
+++ b/tradefed/autogen.go
@@ -167,7 +167,6 @@
 	for _, c := range options.OptionsForAutogenerated {
 		configs = append(configs, c)
 	}
-	testRunnerConfigs := append([]Option{}, options.TestRunnerOptions...)
 	name := options.Name
 	if name == "" {
 		name = ctx.ModuleName()
@@ -176,15 +175,15 @@
 	if autogenPath != nil {
 		templatePath := getTestConfigTemplate(ctx, options.TestConfigTemplateProp)
 		if templatePath.Valid() {
-			autogenTemplate(ctx, name, autogenPath, templatePath.String(), configs, testRunnerConfigs, options.OutputFileName, options.TestInstallBase)
+			autogenTemplate(ctx, name, autogenPath, templatePath.String(), configs, options.TestRunnerOptions, options.OutputFileName, options.TestInstallBase)
 		} else {
 			if ctx.Device() {
-				autogenTemplate(ctx, name, autogenPath, options.DeviceTemplate, configs, testRunnerConfigs, options.OutputFileName, options.TestInstallBase)
+				autogenTemplate(ctx, name, autogenPath, options.DeviceTemplate, configs, options.TestRunnerOptions, options.OutputFileName, options.TestInstallBase)
 			} else {
 				if Bool(options.UnitTest) {
-					autogenTemplate(ctx, name, autogenPath, options.HostUnitTestTemplate, configs, testRunnerConfigs, options.OutputFileName, options.TestInstallBase)
+					autogenTemplate(ctx, name, autogenPath, options.HostUnitTestTemplate, configs, options.TestRunnerOptions, options.OutputFileName, options.TestInstallBase)
 				} else {
-					autogenTemplate(ctx, name, autogenPath, options.HostTemplate, configs, testRunnerConfigs, options.OutputFileName, options.TestInstallBase)
+					autogenTemplate(ctx, name, autogenPath, options.HostTemplate, configs, options.TestRunnerOptions, options.OutputFileName, options.TestInstallBase)
 				}
 			}
 		}
diff --git a/ui/build/bazel_metrics.go b/ui/build/bazel_metrics.go
index c0690c1..3f9fbb1 100644
--- a/ui/build/bazel_metrics.go
+++ b/ui/build/bazel_metrics.go
@@ -121,6 +121,7 @@
 			}
 		}
 		bazelMetrics.PhaseTimings = phaseTimings
+		bazelMetrics.BesId = proto.String(config.besId)
 
 		return bazelMetrics
 	}
diff --git a/ui/build/build.go b/ui/build/build.go
index 6874ef7..14d23a7 100644
--- a/ui/build/build.go
+++ b/ui/build/build.go
@@ -114,15 +114,12 @@
 	if config.bazelProdMode {
 		count++
 	}
-	if config.bazelDevMode {
-		count++
-	}
 	if config.bazelStagingMode {
 		count++
 	}
 	if count > 1 {
 		ctx.Fatalln("Conflicting bazel mode.\n" +
-			"Do not specify more than one of --bazel-mode and --bazel-mode-dev and --bazel-mode-staging ")
+			"Do not specify more than one of --bazel-mode and --bazel-mode-staging ")
 	}
 }
 
diff --git a/ui/build/config.go b/ui/build/config.go
index c991777..0259009 100644
--- a/ui/build/config.go
+++ b/ui/build/config.go
@@ -42,7 +42,7 @@
 	jsonSuffix   = "json"
 
 	configFetcher         = "vendor/google/tools/soong/expconfigfetcher"
-	envConfigFetchTimeout = 10 * time.Second
+	envConfigFetchTimeout = 20 * time.Second
 )
 
 var (
@@ -90,8 +90,9 @@
 	skipMetricsUpload        bool
 	buildStartedTime         int64 // For metrics-upload-only - manually specify a build-started time
 	buildFromTextStub        bool
-	ensureAllowlistIntegrity bool  // For CI builds - make sure modules are mixed-built
-	bazelExitCode            int32 // For b-runs - necessary for updating NonZeroExit
+	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
 
 	// From the product config
 	katiArgs        []string
@@ -111,7 +112,6 @@
 	pathReplaced bool
 
 	bazelProdMode    bool
-	bazelDevMode     bool
 	bazelStagingMode bool
 
 	// Set by multiproduct_kati
@@ -853,8 +853,6 @@
 			c.multitreeBuild = true
 		} else if arg == "--bazel-mode" {
 			c.bazelProdMode = true
-		} else if arg == "--bazel-mode-dev" {
-			c.bazelDevMode = true
 		} else if arg == "--bazel-mode-staging" {
 			c.bazelStagingMode = true
 		} else if arg == "--search-api-dir" {
@@ -911,6 +909,8 @@
 			} else {
 				ctx.Fatalf("Error parsing bazel-exit-code", err)
 			}
+		} else if strings.HasPrefix(arg, "--bes-id=") {
+			c.besId = strings.TrimPrefix(arg, "--bes-id=")
 		} else if len(arg) > 0 && arg[0] == '-' {
 			parseArgNum := func(def int) int {
 				if len(arg) > 2 {
@@ -960,7 +960,7 @@
 			c.arguments = append(c.arguments, arg)
 		}
 	}
-	if (!c.bazelProdMode) && (!c.bazelDevMode) && (!c.bazelStagingMode) {
+	if (!c.bazelProdMode) && (!c.bazelStagingMode) {
 		c.bazelProdMode = defaultBazelProdMode(c)
 	}
 }
@@ -1385,7 +1385,7 @@
 }
 
 func (c *configImpl) BazelBuildEnabled() bool {
-	return c.bazelProdMode || c.bazelDevMode || c.bazelStagingMode
+	return c.bazelProdMode || c.bazelStagingMode
 }
 
 func (c *configImpl) StartRBE() bool {
@@ -1514,7 +1514,7 @@
 	if googleProdCredsExistCache {
 		return googleProdCredsExistCache
 	}
-	if _, err := exec.Command("/usr/bin/gcertstatus").Output(); err != nil {
+	if _, err := exec.Command("/usr/bin/gcertstatus", "-nocheck_ssh").Output(); err != nil {
 		return false
 	}
 	googleProdCredsExistCache = true
diff --git a/ui/build/config_test.go b/ui/build/config_test.go
index a1eccf0..545f727 100644
--- a/ui/build/config_test.go
+++ b/ui/build/config_test.go
@@ -1018,7 +1018,6 @@
 		environ             Environment
 		arguments           []string
 		useBazel            bool
-		bazelDevMode        bool
 		bazelProdMode       bool
 		bazelStagingMode    bool
 		expectedBuildConfig *smpb.BuildConfig
@@ -1097,19 +1096,6 @@
 			},
 		},
 		{
-			name:         "bazel mixed build from dev mode",
-			environ:      Environment{},
-			bazelDevMode: true,
-			expectedBuildConfig: &smpb.BuildConfig{
-				ForceUseGoma:                proto.Bool(false),
-				UseGoma:                     proto.Bool(false),
-				UseRbe:                      proto.Bool(false),
-				BazelMixedBuild:             proto.Bool(true),
-				ForceDisableBazelMixedBuild: proto.Bool(false),
-				NinjaWeightListSource:       smpb.BuildConfig_NOT_USED.Enum(),
-			},
-		},
-		{
 			name:          "bazel mixed build from prod mode",
 			environ:       Environment{},
 			bazelProdMode: true,
@@ -1158,8 +1144,8 @@
 				"USE_RBE=1",
 				"BUILD_BROKEN_DISABLE_BAZEL=1",
 			},
-			useBazel:     true,
-			bazelDevMode: true,
+			useBazel:      true,
+			bazelProdMode: true,
 			expectedBuildConfig: &smpb.BuildConfig{
 				ForceUseGoma:                proto.Bool(true),
 				UseGoma:                     proto.Bool(true),
@@ -1176,7 +1162,6 @@
 		t.Run(tc.name, func(t *testing.T) {
 			c := &configImpl{
 				environ:          &tc.environ,
-				bazelDevMode:     tc.bazelDevMode,
 				bazelProdMode:    tc.bazelProdMode,
 				bazelStagingMode: tc.bazelStagingMode,
 				arguments:        tc.arguments,
diff --git a/ui/build/soong.go b/ui/build/soong.go
index b14208e..07d6188 100644
--- a/ui/build/soong.go
+++ b/ui/build/soong.go
@@ -272,9 +272,6 @@
 	if config.bazelProdMode {
 		mainSoongBuildExtraArgs = append(mainSoongBuildExtraArgs, "--bazel-mode")
 	}
-	if config.bazelDevMode {
-		mainSoongBuildExtraArgs = append(mainSoongBuildExtraArgs, "--bazel-mode-dev")
-	}
 	if config.bazelStagingMode {
 		mainSoongBuildExtraArgs = append(mainSoongBuildExtraArgs, "--bazel-mode-staging")
 	}
@@ -448,7 +445,10 @@
 
 	// since `bootstrap.ninja` is regenerated unconditionally, we ignore the deps, i.e. little
 	// reason to write a `bootstrap.ninja.d` file
-	_ = bootstrap.RunBlueprint(blueprintArgs, bootstrap.DoEverything, blueprintCtx, blueprintConfig)
+	_, err := bootstrap.RunBlueprint(blueprintArgs, bootstrap.DoEverything, blueprintCtx, blueprintConfig)
+	if err != nil {
+		ctx.Fatal(err)
+	}
 }
 
 func checkEnvironmentFile(ctx Context, currentEnv *Environment, envFile string) {
diff --git a/ui/metrics/bazel_metrics_proto/bazel_metrics.pb.go b/ui/metrics/bazel_metrics_proto/bazel_metrics.pb.go
index 17a6b91..8b97b83 100644
--- a/ui/metrics/bazel_metrics_proto/bazel_metrics.pb.go
+++ b/ui/metrics/bazel_metrics_proto/bazel_metrics.pb.go
@@ -42,7 +42,7 @@
 	PhaseTimings []*PhaseTiming `protobuf:"bytes,1,rep,name=phase_timings,json=phaseTimings,proto3" json:"phase_timings,omitempty"`
 	Total        *int64         `protobuf:"varint,2,opt,name=total,proto3,oneof" json:"total,omitempty"`
 	ExitCode     *int32         `protobuf:"varint,3,opt,name=exit_code,json=exitCode,proto3,oneof" json:"exit_code,omitempty"`
-	SpongeId     *string        `protobuf:"bytes,4,opt,name=sponge_id,json=spongeId,proto3,oneof" json:"sponge_id,omitempty"`
+	BesId        *string        `protobuf:"bytes,4,opt,name=bes_id,json=besId,proto3,oneof" json:"bes_id,omitempty"`
 }
 
 func (x *BazelMetrics) Reset() {
@@ -98,9 +98,9 @@
 	return 0
 }
 
-func (x *BazelMetrics) GetSpongeId() string {
-	if x != nil && x.SpongeId != nil {
-		return *x.SpongeId
+func (x *BazelMetrics) GetBesId() string {
+	if x != nil && x.BesId != nil {
+		return *x.BesId
 	}
 	return ""
 }
@@ -177,7 +177,7 @@
 	0x0a, 0x13, 0x62, 0x61, 0x7a, 0x65, 0x6c, 0x5f, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x2e,
 	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x19, 0x73, 0x6f, 0x6f, 0x6e, 0x67, 0x5f, 0x62, 0x75, 0x69,
 	0x6c, 0x64, 0x5f, 0x62, 0x61, 0x7a, 0x65, 0x6c, 0x5f, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73,
-	0x22, 0xe0, 0x01, 0x0a, 0x0c, 0x42, 0x61, 0x7a, 0x65, 0x6c, 0x4d, 0x65, 0x74, 0x72, 0x69, 0x63,
+	0x22, 0xd7, 0x01, 0x0a, 0x0c, 0x42, 0x61, 0x7a, 0x65, 0x6c, 0x4d, 0x65, 0x74, 0x72, 0x69, 0x63,
 	0x73, 0x12, 0x4b, 0x0a, 0x0d, 0x70, 0x68, 0x61, 0x73, 0x65, 0x5f, 0x74, 0x69, 0x6d, 0x69, 0x6e,
 	0x67, 0x73, 0x18, 0x01, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x26, 0x2e, 0x73, 0x6f, 0x6f, 0x6e, 0x67,
 	0x5f, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x5f, 0x62, 0x61, 0x7a, 0x65, 0x6c, 0x5f, 0x6d, 0x65, 0x74,
@@ -186,28 +186,28 @@
 	0x0a, 0x05, 0x74, 0x6f, 0x74, 0x61, 0x6c, 0x18, 0x02, 0x20, 0x01, 0x28, 0x03, 0x48, 0x00, 0x52,
 	0x05, 0x74, 0x6f, 0x74, 0x61, 0x6c, 0x88, 0x01, 0x01, 0x12, 0x20, 0x0a, 0x09, 0x65, 0x78, 0x69,
 	0x74, 0x5f, 0x63, 0x6f, 0x64, 0x65, 0x18, 0x03, 0x20, 0x01, 0x28, 0x05, 0x48, 0x01, 0x52, 0x08,
-	0x65, 0x78, 0x69, 0x74, 0x43, 0x6f, 0x64, 0x65, 0x88, 0x01, 0x01, 0x12, 0x20, 0x0a, 0x09, 0x73,
-	0x70, 0x6f, 0x6e, 0x67, 0x65, 0x5f, 0x69, 0x64, 0x18, 0x04, 0x20, 0x01, 0x28, 0x09, 0x48, 0x02,
-	0x52, 0x08, 0x73, 0x70, 0x6f, 0x6e, 0x67, 0x65, 0x49, 0x64, 0x88, 0x01, 0x01, 0x42, 0x08, 0x0a,
-	0x06, 0x5f, 0x74, 0x6f, 0x74, 0x61, 0x6c, 0x42, 0x0c, 0x0a, 0x0a, 0x5f, 0x65, 0x78, 0x69, 0x74,
-	0x5f, 0x63, 0x6f, 0x64, 0x65, 0x42, 0x0c, 0x0a, 0x0a, 0x5f, 0x73, 0x70, 0x6f, 0x6e, 0x67, 0x65,
-	0x5f, 0x69, 0x64, 0x22, 0xd1, 0x01, 0x0a, 0x0b, 0x50, 0x68, 0x61, 0x73, 0x65, 0x54, 0x69, 0x6d,
-	0x69, 0x6e, 0x67, 0x12, 0x22, 0x0a, 0x0a, 0x70, 0x68, 0x61, 0x73, 0x65, 0x5f, 0x6e, 0x61, 0x6d,
-	0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x48, 0x00, 0x52, 0x09, 0x70, 0x68, 0x61, 0x73, 0x65,
-	0x4e, 0x61, 0x6d, 0x65, 0x88, 0x01, 0x01, 0x12, 0x2a, 0x0a, 0x0e, 0x64, 0x75, 0x72, 0x61, 0x74,
-	0x69, 0x6f, 0x6e, 0x5f, 0x6e, 0x61, 0x6e, 0x6f, 0x73, 0x18, 0x02, 0x20, 0x01, 0x28, 0x03, 0x48,
-	0x01, 0x52, 0x0d, 0x64, 0x75, 0x72, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x4e, 0x61, 0x6e, 0x6f, 0x73,
-	0x88, 0x01, 0x01, 0x12, 0x36, 0x0a, 0x15, 0x70, 0x6f, 0x72, 0x74, 0x69, 0x6f, 0x6e, 0x5f, 0x6f,
-	0x66, 0x5f, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x5f, 0x74, 0x69, 0x6d, 0x65, 0x18, 0x03, 0x20, 0x01,
-	0x28, 0x05, 0x48, 0x02, 0x52, 0x12, 0x70, 0x6f, 0x72, 0x74, 0x69, 0x6f, 0x6e, 0x4f, 0x66, 0x42,
-	0x75, 0x69, 0x6c, 0x64, 0x54, 0x69, 0x6d, 0x65, 0x88, 0x01, 0x01, 0x42, 0x0d, 0x0a, 0x0b, 0x5f,
-	0x70, 0x68, 0x61, 0x73, 0x65, 0x5f, 0x6e, 0x61, 0x6d, 0x65, 0x42, 0x11, 0x0a, 0x0f, 0x5f, 0x64,
-	0x75, 0x72, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x5f, 0x6e, 0x61, 0x6e, 0x6f, 0x73, 0x42, 0x18, 0x0a,
-	0x16, 0x5f, 0x70, 0x6f, 0x72, 0x74, 0x69, 0x6f, 0x6e, 0x5f, 0x6f, 0x66, 0x5f, 0x62, 0x75, 0x69,
-	0x6c, 0x64, 0x5f, 0x74, 0x69, 0x6d, 0x65, 0x42, 0x2e, 0x5a, 0x2c, 0x61, 0x6e, 0x64, 0x72, 0x6f,
-	0x69, 0x64, 0x2f, 0x73, 0x6f, 0x6f, 0x6e, 0x67, 0x2f, 0x75, 0x69, 0x2f, 0x6d, 0x65, 0x74, 0x72,
-	0x69, 0x63, 0x73, 0x2f, 0x62, 0x61, 0x7a, 0x65, 0x6c, 0x5f, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63,
-	0x73, 0x5f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x65, 0x78, 0x69, 0x74, 0x43, 0x6f, 0x64, 0x65, 0x88, 0x01, 0x01, 0x12, 0x1a, 0x0a, 0x06, 0x62,
+	0x65, 0x73, 0x5f, 0x69, 0x64, 0x18, 0x04, 0x20, 0x01, 0x28, 0x09, 0x48, 0x02, 0x52, 0x05, 0x62,
+	0x65, 0x73, 0x49, 0x64, 0x88, 0x01, 0x01, 0x42, 0x08, 0x0a, 0x06, 0x5f, 0x74, 0x6f, 0x74, 0x61,
+	0x6c, 0x42, 0x0c, 0x0a, 0x0a, 0x5f, 0x65, 0x78, 0x69, 0x74, 0x5f, 0x63, 0x6f, 0x64, 0x65, 0x42,
+	0x09, 0x0a, 0x07, 0x5f, 0x62, 0x65, 0x73, 0x5f, 0x69, 0x64, 0x22, 0xd1, 0x01, 0x0a, 0x0b, 0x50,
+	0x68, 0x61, 0x73, 0x65, 0x54, 0x69, 0x6d, 0x69, 0x6e, 0x67, 0x12, 0x22, 0x0a, 0x0a, 0x70, 0x68,
+	0x61, 0x73, 0x65, 0x5f, 0x6e, 0x61, 0x6d, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x48, 0x00,
+	0x52, 0x09, 0x70, 0x68, 0x61, 0x73, 0x65, 0x4e, 0x61, 0x6d, 0x65, 0x88, 0x01, 0x01, 0x12, 0x2a,
+	0x0a, 0x0e, 0x64, 0x75, 0x72, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x5f, 0x6e, 0x61, 0x6e, 0x6f, 0x73,
+	0x18, 0x02, 0x20, 0x01, 0x28, 0x03, 0x48, 0x01, 0x52, 0x0d, 0x64, 0x75, 0x72, 0x61, 0x74, 0x69,
+	0x6f, 0x6e, 0x4e, 0x61, 0x6e, 0x6f, 0x73, 0x88, 0x01, 0x01, 0x12, 0x36, 0x0a, 0x15, 0x70, 0x6f,
+	0x72, 0x74, 0x69, 0x6f, 0x6e, 0x5f, 0x6f, 0x66, 0x5f, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x5f, 0x74,
+	0x69, 0x6d, 0x65, 0x18, 0x03, 0x20, 0x01, 0x28, 0x05, 0x48, 0x02, 0x52, 0x12, 0x70, 0x6f, 0x72,
+	0x74, 0x69, 0x6f, 0x6e, 0x4f, 0x66, 0x42, 0x75, 0x69, 0x6c, 0x64, 0x54, 0x69, 0x6d, 0x65, 0x88,
+	0x01, 0x01, 0x42, 0x0d, 0x0a, 0x0b, 0x5f, 0x70, 0x68, 0x61, 0x73, 0x65, 0x5f, 0x6e, 0x61, 0x6d,
+	0x65, 0x42, 0x11, 0x0a, 0x0f, 0x5f, 0x64, 0x75, 0x72, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x5f, 0x6e,
+	0x61, 0x6e, 0x6f, 0x73, 0x42, 0x18, 0x0a, 0x16, 0x5f, 0x70, 0x6f, 0x72, 0x74, 0x69, 0x6f, 0x6e,
+	0x5f, 0x6f, 0x66, 0x5f, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x5f, 0x74, 0x69, 0x6d, 0x65, 0x42, 0x2e,
+	0x5a, 0x2c, 0x61, 0x6e, 0x64, 0x72, 0x6f, 0x69, 0x64, 0x2f, 0x73, 0x6f, 0x6f, 0x6e, 0x67, 0x2f,
+	0x75, 0x69, 0x2f, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x2f, 0x62, 0x61, 0x7a, 0x65, 0x6c,
+	0x5f, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x5f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x06,
+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
diff --git a/ui/metrics/bazel_metrics_proto/bazel_metrics.proto b/ui/metrics/bazel_metrics_proto/bazel_metrics.proto
index e7e1015..e45d2bf 100644
--- a/ui/metrics/bazel_metrics_proto/bazel_metrics.proto
+++ b/ui/metrics/bazel_metrics_proto/bazel_metrics.proto
@@ -21,7 +21,7 @@
   repeated PhaseTiming phase_timings = 1;
   optional int64 total = 2;
   optional int32 exit_code = 3;
-  optional string sponge_id = 4;
+  optional string bes_id = 4;
 }
 
 message PhaseTiming {
diff --git a/ui/metrics/bp2build_metrics_proto/bp2build_metrics.pb.go b/ui/metrics/bp2build_metrics_proto/bp2build_metrics.pb.go
index 4821043..b34c2b6 100644
--- a/ui/metrics/bp2build_metrics_proto/bp2build_metrics.pb.go
+++ b/ui/metrics/bp2build_metrics_proto/bp2build_metrics.pb.go
@@ -14,8 +14,8 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.28.0
-// 	protoc        v3.21.7
+// 	protoc-gen-go v1.30.0
+// 	protoc        v3.21.12
 // source: bp2build_metrics.proto
 
 package bp2build_metrics_proto
@@ -34,6 +34,78 @@
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
+type UnconvertedReasonType int32
+
+const (
+	// Bp2build does not know how to convert this specific module for some reason
+	// not covered by other reason types. The reason detail should explain the
+	// specific issue.
+	UnconvertedReasonType_UNSUPPORTED UnconvertedReasonType = 0
+	// The module was already defined in a BUILD file available in the source tree.
+	UnconvertedReasonType_DEFINED_IN_BUILD_FILE UnconvertedReasonType = 1
+	// The module was explicitly denylisted by name.
+	UnconvertedReasonType_DENYLISTED UnconvertedReasonType = 2
+	// The module's type has no bp2build implementation.
+	UnconvertedReasonType_TYPE_UNSUPPORTED UnconvertedReasonType = 3
+	// The module has a property not yet supported. The detail field should
+	// name the unsupported property name.
+	UnconvertedReasonType_PROPERTY_UNSUPPORTED UnconvertedReasonType = 4
+	// The module has an unconverted dependency. The detail should consist of
+	// the name of the unconverted module.
+	UnconvertedReasonType_UNCONVERTED_DEP UnconvertedReasonType = 5
+	// The module has a source file with the same name as the module itself.
+	UnconvertedReasonType_SRC_NAME_COLLISION UnconvertedReasonType = 6
+)
+
+// Enum value maps for UnconvertedReasonType.
+var (
+	UnconvertedReasonType_name = map[int32]string{
+		0: "UNSUPPORTED",
+		1: "DEFINED_IN_BUILD_FILE",
+		2: "DENYLISTED",
+		3: "TYPE_UNSUPPORTED",
+		4: "PROPERTY_UNSUPPORTED",
+		5: "UNCONVERTED_DEP",
+		6: "SRC_NAME_COLLISION",
+	}
+	UnconvertedReasonType_value = map[string]int32{
+		"UNSUPPORTED":           0,
+		"DEFINED_IN_BUILD_FILE": 1,
+		"DENYLISTED":            2,
+		"TYPE_UNSUPPORTED":      3,
+		"PROPERTY_UNSUPPORTED":  4,
+		"UNCONVERTED_DEP":       5,
+		"SRC_NAME_COLLISION":    6,
+	}
+)
+
+func (x UnconvertedReasonType) Enum() *UnconvertedReasonType {
+	p := new(UnconvertedReasonType)
+	*p = x
+	return p
+}
+
+func (x UnconvertedReasonType) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (UnconvertedReasonType) Descriptor() protoreflect.EnumDescriptor {
+	return file_bp2build_metrics_proto_enumTypes[0].Descriptor()
+}
+
+func (UnconvertedReasonType) Type() protoreflect.EnumType {
+	return &file_bp2build_metrics_proto_enumTypes[0]
+}
+
+func (x UnconvertedReasonType) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use UnconvertedReasonType.Descriptor instead.
+func (UnconvertedReasonType) EnumDescriptor() ([]byte, []int) {
+	return file_bp2build_metrics_proto_rawDescGZIP(), []int{0}
+}
+
 type Bp2BuildMetrics struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -53,6 +125,8 @@
 	RuleClassCount map[string]uint64 `protobuf:"bytes,4,rep,name=ruleClassCount,proto3" json:"ruleClassCount,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"varint,2,opt,name=value,proto3"`
 	// List of converted modules
 	ConvertedModules []string `protobuf:"bytes,5,rep,name=convertedModules,proto3" json:"convertedModules,omitempty"`
+	// Unconverted modules, mapped to the reason the module was not converted.
+	UnconvertedModules map[string]*UnconvertedReason `protobuf:"bytes,11,rep,name=unconvertedModules,proto3" json:"unconvertedModules,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 	// Counts of converted modules by module type.
 	ConvertedModuleTypeCount map[string]uint64 `protobuf:"bytes,6,rep,name=convertedModuleTypeCount,proto3" json:"convertedModuleTypeCount,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"varint,2,opt,name=value,proto3"`
 	// Counts of total modules by module type.
@@ -143,6 +217,13 @@
 	return nil
 }
 
+func (x *Bp2BuildMetrics) GetUnconvertedModules() map[string]*UnconvertedReason {
+	if x != nil {
+		return x.UnconvertedModules
+	}
+	return nil
+}
+
 func (x *Bp2BuildMetrics) GetConvertedModuleTypeCount() map[string]uint64 {
 	if x != nil {
 		return x.ConvertedModuleTypeCount
@@ -233,13 +314,72 @@
 	return 0
 }
 
+type UnconvertedReason struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The type of reason that the module could not be converted.
+	Type UnconvertedReasonType `protobuf:"varint,1,opt,name=type,proto3,enum=soong_build_bp2build_metrics.UnconvertedReasonType" json:"type,omitempty"`
+	// Descriptive details describing why the module could not be converted.
+	// This detail should be kept very short and should be in the context of
+	// the type. (Otherwise, this would significantly bloat metrics.)
+	Detail string `protobuf:"bytes,2,opt,name=detail,proto3" json:"detail,omitempty"`
+}
+
+func (x *UnconvertedReason) Reset() {
+	*x = UnconvertedReason{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_bp2build_metrics_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *UnconvertedReason) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*UnconvertedReason) ProtoMessage() {}
+
+func (x *UnconvertedReason) ProtoReflect() protoreflect.Message {
+	mi := &file_bp2build_metrics_proto_msgTypes[2]
+	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 UnconvertedReason.ProtoReflect.Descriptor instead.
+func (*UnconvertedReason) Descriptor() ([]byte, []int) {
+	return file_bp2build_metrics_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *UnconvertedReason) GetType() UnconvertedReasonType {
+	if x != nil {
+		return x.Type
+	}
+	return UnconvertedReasonType_UNSUPPORTED
+}
+
+func (x *UnconvertedReason) GetDetail() string {
+	if x != nil {
+		return x.Detail
+	}
+	return ""
+}
+
 var File_bp2build_metrics_proto protoreflect.FileDescriptor
 
 var file_bp2build_metrics_proto_rawDesc = []byte{
 	0x0a, 0x16, 0x62, 0x70, 0x32, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x5f, 0x6d, 0x65, 0x74, 0x72, 0x69,
 	0x63, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x1c, 0x73, 0x6f, 0x6f, 0x6e, 0x67, 0x5f,
 	0x62, 0x75, 0x69, 0x6c, 0x64, 0x5f, 0x62, 0x70, 0x32, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x5f, 0x6d,
-	0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x22, 0xd1, 0x07, 0x0a, 0x0f, 0x42, 0x70, 0x32, 0x42, 0x75,
+	0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x22, 0xc0, 0x09, 0x0a, 0x0f, 0x42, 0x70, 0x32, 0x42, 0x75,
 	0x69, 0x6c, 0x64, 0x4d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x12, 0x32, 0x0a, 0x14, 0x67, 0x65,
 	0x6e, 0x65, 0x72, 0x61, 0x74, 0x65, 0x64, 0x4d, 0x6f, 0x64, 0x75, 0x6c, 0x65, 0x43, 0x6f, 0x75,
 	0x6e, 0x74, 0x18, 0x01, 0x20, 0x01, 0x28, 0x04, 0x52, 0x14, 0x67, 0x65, 0x6e, 0x65, 0x72, 0x61,
@@ -266,50 +406,84 @@
 	0x79, 0x52, 0x0e, 0x72, 0x75, 0x6c, 0x65, 0x43, 0x6c, 0x61, 0x73, 0x73, 0x43, 0x6f, 0x75, 0x6e,
 	0x74, 0x12, 0x2a, 0x0a, 0x10, 0x63, 0x6f, 0x6e, 0x76, 0x65, 0x72, 0x74, 0x65, 0x64, 0x4d, 0x6f,
 	0x64, 0x75, 0x6c, 0x65, 0x73, 0x18, 0x05, 0x20, 0x03, 0x28, 0x09, 0x52, 0x10, 0x63, 0x6f, 0x6e,
-	0x76, 0x65, 0x72, 0x74, 0x65, 0x64, 0x4d, 0x6f, 0x64, 0x75, 0x6c, 0x65, 0x73, 0x12, 0x87, 0x01,
-	0x0a, 0x18, 0x63, 0x6f, 0x6e, 0x76, 0x65, 0x72, 0x74, 0x65, 0x64, 0x4d, 0x6f, 0x64, 0x75, 0x6c,
-	0x65, 0x54, 0x79, 0x70, 0x65, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x18, 0x06, 0x20, 0x03, 0x28, 0x0b,
-	0x32, 0x4b, 0x2e, 0x73, 0x6f, 0x6f, 0x6e, 0x67, 0x5f, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x5f, 0x62,
-	0x70, 0x32, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x5f, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x2e,
-	0x42, 0x70, 0x32, 0x42, 0x75, 0x69, 0x6c, 0x64, 0x4d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x2e,
-	0x43, 0x6f, 0x6e, 0x76, 0x65, 0x72, 0x74, 0x65, 0x64, 0x4d, 0x6f, 0x64, 0x75, 0x6c, 0x65, 0x54,
-	0x79, 0x70, 0x65, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x52, 0x18, 0x63,
-	0x6f, 0x6e, 0x76, 0x65, 0x72, 0x74, 0x65, 0x64, 0x4d, 0x6f, 0x64, 0x75, 0x6c, 0x65, 0x54, 0x79,
-	0x70, 0x65, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x12, 0x7b, 0x0a, 0x14, 0x74, 0x6f, 0x74, 0x61, 0x6c,
-	0x4d, 0x6f, 0x64, 0x75, 0x6c, 0x65, 0x54, 0x79, 0x70, 0x65, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x18,
-	0x07, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x47, 0x2e, 0x73, 0x6f, 0x6f, 0x6e, 0x67, 0x5f, 0x62, 0x75,
+	0x76, 0x65, 0x72, 0x74, 0x65, 0x64, 0x4d, 0x6f, 0x64, 0x75, 0x6c, 0x65, 0x73, 0x12, 0x75, 0x0a,
+	0x12, 0x75, 0x6e, 0x63, 0x6f, 0x6e, 0x76, 0x65, 0x72, 0x74, 0x65, 0x64, 0x4d, 0x6f, 0x64, 0x75,
+	0x6c, 0x65, 0x73, 0x18, 0x0b, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x45, 0x2e, 0x73, 0x6f, 0x6f, 0x6e,
+	0x67, 0x5f, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x5f, 0x62, 0x70, 0x32, 0x62, 0x75, 0x69, 0x6c, 0x64,
+	0x5f, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x2e, 0x42, 0x70, 0x32, 0x42, 0x75, 0x69, 0x6c,
+	0x64, 0x4d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x2e, 0x55, 0x6e, 0x63, 0x6f, 0x6e, 0x76, 0x65,
+	0x72, 0x74, 0x65, 0x64, 0x4d, 0x6f, 0x64, 0x75, 0x6c, 0x65, 0x73, 0x45, 0x6e, 0x74, 0x72, 0x79,
+	0x52, 0x12, 0x75, 0x6e, 0x63, 0x6f, 0x6e, 0x76, 0x65, 0x72, 0x74, 0x65, 0x64, 0x4d, 0x6f, 0x64,
+	0x75, 0x6c, 0x65, 0x73, 0x12, 0x87, 0x01, 0x0a, 0x18, 0x63, 0x6f, 0x6e, 0x76, 0x65, 0x72, 0x74,
+	0x65, 0x64, 0x4d, 0x6f, 0x64, 0x75, 0x6c, 0x65, 0x54, 0x79, 0x70, 0x65, 0x43, 0x6f, 0x75, 0x6e,
+	0x74, 0x18, 0x06, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x4b, 0x2e, 0x73, 0x6f, 0x6f, 0x6e, 0x67, 0x5f,
+	0x62, 0x75, 0x69, 0x6c, 0x64, 0x5f, 0x62, 0x70, 0x32, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x5f, 0x6d,
+	0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x2e, 0x42, 0x70, 0x32, 0x42, 0x75, 0x69, 0x6c, 0x64, 0x4d,
+	0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x2e, 0x43, 0x6f, 0x6e, 0x76, 0x65, 0x72, 0x74, 0x65, 0x64,
+	0x4d, 0x6f, 0x64, 0x75, 0x6c, 0x65, 0x54, 0x79, 0x70, 0x65, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x45,
+	0x6e, 0x74, 0x72, 0x79, 0x52, 0x18, 0x63, 0x6f, 0x6e, 0x76, 0x65, 0x72, 0x74, 0x65, 0x64, 0x4d,
+	0x6f, 0x64, 0x75, 0x6c, 0x65, 0x54, 0x79, 0x70, 0x65, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x12, 0x7b,
+	0x0a, 0x14, 0x74, 0x6f, 0x74, 0x61, 0x6c, 0x4d, 0x6f, 0x64, 0x75, 0x6c, 0x65, 0x54, 0x79, 0x70,
+	0x65, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x18, 0x07, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x47, 0x2e, 0x73,
+	0x6f, 0x6f, 0x6e, 0x67, 0x5f, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x5f, 0x62, 0x70, 0x32, 0x62, 0x75,
+	0x69, 0x6c, 0x64, 0x5f, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x2e, 0x42, 0x70, 0x32, 0x42,
+	0x75, 0x69, 0x6c, 0x64, 0x4d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x2e, 0x54, 0x6f, 0x74, 0x61,
+	0x6c, 0x4d, 0x6f, 0x64, 0x75, 0x6c, 0x65, 0x54, 0x79, 0x70, 0x65, 0x43, 0x6f, 0x75, 0x6e, 0x74,
+	0x45, 0x6e, 0x74, 0x72, 0x79, 0x52, 0x14, 0x74, 0x6f, 0x74, 0x61, 0x6c, 0x4d, 0x6f, 0x64, 0x75,
+	0x6c, 0x65, 0x54, 0x79, 0x70, 0x65, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x12, 0x3b, 0x0a, 0x06, 0x65,
+	0x76, 0x65, 0x6e, 0x74, 0x73, 0x18, 0x08, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x23, 0x2e, 0x73, 0x6f,
+	0x6f, 0x6e, 0x67, 0x5f, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x5f, 0x62, 0x70, 0x32, 0x62, 0x75, 0x69,
+	0x6c, 0x64, 0x5f, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x2e, 0x45, 0x76, 0x65, 0x6e, 0x74,
+	0x52, 0x06, 0x65, 0x76, 0x65, 0x6e, 0x74, 0x73, 0x1a, 0x41, 0x0a, 0x13, 0x52, 0x75, 0x6c, 0x65,
+	0x43, 0x6c, 0x61, 0x73, 0x73, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x12,
+	0x10, 0x0a, 0x03, 0x6b, 0x65, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x03, 0x6b, 0x65,
+	0x79, 0x12, 0x14, 0x0a, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x04,
+	0x52, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x3a, 0x02, 0x38, 0x01, 0x1a, 0x76, 0x0a, 0x17, 0x55,
+	0x6e, 0x63, 0x6f, 0x6e, 0x76, 0x65, 0x72, 0x74, 0x65, 0x64, 0x4d, 0x6f, 0x64, 0x75, 0x6c, 0x65,
+	0x73, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x12, 0x10, 0x0a, 0x03, 0x6b, 0x65, 0x79, 0x18, 0x01, 0x20,
+	0x01, 0x28, 0x09, 0x52, 0x03, 0x6b, 0x65, 0x79, 0x12, 0x45, 0x0a, 0x05, 0x76, 0x61, 0x6c, 0x75,
+	0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x2f, 0x2e, 0x73, 0x6f, 0x6f, 0x6e, 0x67, 0x5f,
+	0x62, 0x75, 0x69, 0x6c, 0x64, 0x5f, 0x62, 0x70, 0x32, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x5f, 0x6d,
+	0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x2e, 0x55, 0x6e, 0x63, 0x6f, 0x6e, 0x76, 0x65, 0x72, 0x74,
+	0x65, 0x64, 0x52, 0x65, 0x61, 0x73, 0x6f, 0x6e, 0x52, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x3a,
+	0x02, 0x38, 0x01, 0x1a, 0x4b, 0x0a, 0x1d, 0x43, 0x6f, 0x6e, 0x76, 0x65, 0x72, 0x74, 0x65, 0x64,
+	0x4d, 0x6f, 0x64, 0x75, 0x6c, 0x65, 0x54, 0x79, 0x70, 0x65, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x45,
+	0x6e, 0x74, 0x72, 0x79, 0x12, 0x10, 0x0a, 0x03, 0x6b, 0x65, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28,
+	0x09, 0x52, 0x03, 0x6b, 0x65, 0x79, 0x12, 0x14, 0x0a, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x18,
+	0x02, 0x20, 0x01, 0x28, 0x04, 0x52, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x3a, 0x02, 0x38, 0x01,
+	0x1a, 0x47, 0x0a, 0x19, 0x54, 0x6f, 0x74, 0x61, 0x6c, 0x4d, 0x6f, 0x64, 0x75, 0x6c, 0x65, 0x54,
+	0x79, 0x70, 0x65, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x12, 0x10, 0x0a,
+	0x03, 0x6b, 0x65, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x03, 0x6b, 0x65, 0x79, 0x12,
+	0x14, 0x0a, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x04, 0x52, 0x05,
+	0x76, 0x61, 0x6c, 0x75, 0x65, 0x3a, 0x02, 0x38, 0x01, 0x22, 0x57, 0x0a, 0x05, 0x45, 0x76, 0x65,
+	0x6e, 0x74, 0x12, 0x12, 0x0a, 0x04, 0x6e, 0x61, 0x6d, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09,
+	0x52, 0x04, 0x6e, 0x61, 0x6d, 0x65, 0x12, 0x1d, 0x0a, 0x0a, 0x73, 0x74, 0x61, 0x72, 0x74, 0x5f,
+	0x74, 0x69, 0x6d, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x04, 0x52, 0x09, 0x73, 0x74, 0x61, 0x72,
+	0x74, 0x54, 0x69, 0x6d, 0x65, 0x12, 0x1b, 0x0a, 0x09, 0x72, 0x65, 0x61, 0x6c, 0x5f, 0x74, 0x69,
+	0x6d, 0x65, 0x18, 0x03, 0x20, 0x01, 0x28, 0x04, 0x52, 0x08, 0x72, 0x65, 0x61, 0x6c, 0x54, 0x69,
+	0x6d, 0x65, 0x22, 0x74, 0x0a, 0x11, 0x55, 0x6e, 0x63, 0x6f, 0x6e, 0x76, 0x65, 0x72, 0x74, 0x65,
+	0x64, 0x52, 0x65, 0x61, 0x73, 0x6f, 0x6e, 0x12, 0x47, 0x0a, 0x04, 0x74, 0x79, 0x70, 0x65, 0x18,
+	0x01, 0x20, 0x01, 0x28, 0x0e, 0x32, 0x33, 0x2e, 0x73, 0x6f, 0x6f, 0x6e, 0x67, 0x5f, 0x62, 0x75,
 	0x69, 0x6c, 0x64, 0x5f, 0x62, 0x70, 0x32, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x5f, 0x6d, 0x65, 0x74,
-	0x72, 0x69, 0x63, 0x73, 0x2e, 0x42, 0x70, 0x32, 0x42, 0x75, 0x69, 0x6c, 0x64, 0x4d, 0x65, 0x74,
-	0x72, 0x69, 0x63, 0x73, 0x2e, 0x54, 0x6f, 0x74, 0x61, 0x6c, 0x4d, 0x6f, 0x64, 0x75, 0x6c, 0x65,
-	0x54, 0x79, 0x70, 0x65, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x52, 0x14,
-	0x74, 0x6f, 0x74, 0x61, 0x6c, 0x4d, 0x6f, 0x64, 0x75, 0x6c, 0x65, 0x54, 0x79, 0x70, 0x65, 0x43,
-	0x6f, 0x75, 0x6e, 0x74, 0x12, 0x3b, 0x0a, 0x06, 0x65, 0x76, 0x65, 0x6e, 0x74, 0x73, 0x18, 0x08,
-	0x20, 0x03, 0x28, 0x0b, 0x32, 0x23, 0x2e, 0x73, 0x6f, 0x6f, 0x6e, 0x67, 0x5f, 0x62, 0x75, 0x69,
-	0x6c, 0x64, 0x5f, 0x62, 0x70, 0x32, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x5f, 0x6d, 0x65, 0x74, 0x72,
-	0x69, 0x63, 0x73, 0x2e, 0x45, 0x76, 0x65, 0x6e, 0x74, 0x52, 0x06, 0x65, 0x76, 0x65, 0x6e, 0x74,
-	0x73, 0x1a, 0x41, 0x0a, 0x13, 0x52, 0x75, 0x6c, 0x65, 0x43, 0x6c, 0x61, 0x73, 0x73, 0x43, 0x6f,
-	0x75, 0x6e, 0x74, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x12, 0x10, 0x0a, 0x03, 0x6b, 0x65, 0x79, 0x18,
-	0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x03, 0x6b, 0x65, 0x79, 0x12, 0x14, 0x0a, 0x05, 0x76, 0x61,
-	0x6c, 0x75, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x04, 0x52, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65,
-	0x3a, 0x02, 0x38, 0x01, 0x1a, 0x4b, 0x0a, 0x1d, 0x43, 0x6f, 0x6e, 0x76, 0x65, 0x72, 0x74, 0x65,
-	0x64, 0x4d, 0x6f, 0x64, 0x75, 0x6c, 0x65, 0x54, 0x79, 0x70, 0x65, 0x43, 0x6f, 0x75, 0x6e, 0x74,
-	0x45, 0x6e, 0x74, 0x72, 0x79, 0x12, 0x10, 0x0a, 0x03, 0x6b, 0x65, 0x79, 0x18, 0x01, 0x20, 0x01,
-	0x28, 0x09, 0x52, 0x03, 0x6b, 0x65, 0x79, 0x12, 0x14, 0x0a, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65,
-	0x18, 0x02, 0x20, 0x01, 0x28, 0x04, 0x52, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x3a, 0x02, 0x38,
-	0x01, 0x1a, 0x47, 0x0a, 0x19, 0x54, 0x6f, 0x74, 0x61, 0x6c, 0x4d, 0x6f, 0x64, 0x75, 0x6c, 0x65,
-	0x54, 0x79, 0x70, 0x65, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x12, 0x10,
-	0x0a, 0x03, 0x6b, 0x65, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x03, 0x6b, 0x65, 0x79,
-	0x12, 0x14, 0x0a, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x04, 0x52,
-	0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x3a, 0x02, 0x38, 0x01, 0x22, 0x57, 0x0a, 0x05, 0x45, 0x76,
-	0x65, 0x6e, 0x74, 0x12, 0x12, 0x0a, 0x04, 0x6e, 0x61, 0x6d, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28,
-	0x09, 0x52, 0x04, 0x6e, 0x61, 0x6d, 0x65, 0x12, 0x1d, 0x0a, 0x0a, 0x73, 0x74, 0x61, 0x72, 0x74,
-	0x5f, 0x74, 0x69, 0x6d, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x04, 0x52, 0x09, 0x73, 0x74, 0x61,
-	0x72, 0x74, 0x54, 0x69, 0x6d, 0x65, 0x12, 0x1b, 0x0a, 0x09, 0x72, 0x65, 0x61, 0x6c, 0x5f, 0x74,
-	0x69, 0x6d, 0x65, 0x18, 0x03, 0x20, 0x01, 0x28, 0x04, 0x52, 0x08, 0x72, 0x65, 0x61, 0x6c, 0x54,
-	0x69, 0x6d, 0x65, 0x42, 0x31, 0x5a, 0x2f, 0x61, 0x6e, 0x64, 0x72, 0x6f, 0x69, 0x64, 0x2f, 0x73,
-	0x6f, 0x6f, 0x6e, 0x67, 0x2f, 0x75, 0x69, 0x2f, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x2f,
-	0x62, 0x70, 0x32, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x5f, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73,
-	0x5f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x72, 0x69, 0x63, 0x73, 0x2e, 0x55, 0x6e, 0x63, 0x6f, 0x6e, 0x76, 0x65, 0x72, 0x74, 0x65, 0x64,
+	0x52, 0x65, 0x61, 0x73, 0x6f, 0x6e, 0x54, 0x79, 0x70, 0x65, 0x52, 0x04, 0x74, 0x79, 0x70, 0x65,
+	0x12, 0x16, 0x0a, 0x06, 0x64, 0x65, 0x74, 0x61, 0x69, 0x6c, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09,
+	0x52, 0x06, 0x64, 0x65, 0x74, 0x61, 0x69, 0x6c, 0x2a, 0xb0, 0x01, 0x0a, 0x15, 0x55, 0x6e, 0x63,
+	0x6f, 0x6e, 0x76, 0x65, 0x72, 0x74, 0x65, 0x64, 0x52, 0x65, 0x61, 0x73, 0x6f, 0x6e, 0x54, 0x79,
+	0x70, 0x65, 0x12, 0x0f, 0x0a, 0x0b, 0x55, 0x4e, 0x53, 0x55, 0x50, 0x50, 0x4f, 0x52, 0x54, 0x45,
+	0x44, 0x10, 0x00, 0x12, 0x19, 0x0a, 0x15, 0x44, 0x45, 0x46, 0x49, 0x4e, 0x45, 0x44, 0x5f, 0x49,
+	0x4e, 0x5f, 0x42, 0x55, 0x49, 0x4c, 0x44, 0x5f, 0x46, 0x49, 0x4c, 0x45, 0x10, 0x01, 0x12, 0x0e,
+	0x0a, 0x0a, 0x44, 0x45, 0x4e, 0x59, 0x4c, 0x49, 0x53, 0x54, 0x45, 0x44, 0x10, 0x02, 0x12, 0x14,
+	0x0a, 0x10, 0x54, 0x59, 0x50, 0x45, 0x5f, 0x55, 0x4e, 0x53, 0x55, 0x50, 0x50, 0x4f, 0x52, 0x54,
+	0x45, 0x44, 0x10, 0x03, 0x12, 0x18, 0x0a, 0x14, 0x50, 0x52, 0x4f, 0x50, 0x45, 0x52, 0x54, 0x59,
+	0x5f, 0x55, 0x4e, 0x53, 0x55, 0x50, 0x50, 0x4f, 0x52, 0x54, 0x45, 0x44, 0x10, 0x04, 0x12, 0x13,
+	0x0a, 0x0f, 0x55, 0x4e, 0x43, 0x4f, 0x4e, 0x56, 0x45, 0x52, 0x54, 0x45, 0x44, 0x5f, 0x44, 0x45,
+	0x50, 0x10, 0x05, 0x12, 0x16, 0x0a, 0x12, 0x53, 0x52, 0x43, 0x5f, 0x4e, 0x41, 0x4d, 0x45, 0x5f,
+	0x43, 0x4f, 0x4c, 0x4c, 0x49, 0x53, 0x49, 0x4f, 0x4e, 0x10, 0x06, 0x42, 0x31, 0x5a, 0x2f, 0x61,
+	0x6e, 0x64, 0x72, 0x6f, 0x69, 0x64, 0x2f, 0x73, 0x6f, 0x6f, 0x6e, 0x67, 0x2f, 0x75, 0x69, 0x2f,
+	0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x2f, 0x62, 0x70, 0x32, 0x62, 0x75, 0x69, 0x6c, 0x64,
+	0x5f, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x5f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x06,
+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -324,24 +498,31 @@
 	return file_bp2build_metrics_proto_rawDescData
 }
 
-var file_bp2build_metrics_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
+var file_bp2build_metrics_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
+var file_bp2build_metrics_proto_msgTypes = make([]protoimpl.MessageInfo, 7)
 var file_bp2build_metrics_proto_goTypes = []interface{}{
-	(*Bp2BuildMetrics)(nil), // 0: soong_build_bp2build_metrics.Bp2BuildMetrics
-	(*Event)(nil),           // 1: soong_build_bp2build_metrics.Event
-	nil,                     // 2: soong_build_bp2build_metrics.Bp2BuildMetrics.RuleClassCountEntry
-	nil,                     // 3: soong_build_bp2build_metrics.Bp2BuildMetrics.ConvertedModuleTypeCountEntry
-	nil,                     // 4: soong_build_bp2build_metrics.Bp2BuildMetrics.TotalModuleTypeCountEntry
+	(UnconvertedReasonType)(0), // 0: soong_build_bp2build_metrics.UnconvertedReasonType
+	(*Bp2BuildMetrics)(nil),    // 1: soong_build_bp2build_metrics.Bp2BuildMetrics
+	(*Event)(nil),              // 2: soong_build_bp2build_metrics.Event
+	(*UnconvertedReason)(nil),  // 3: soong_build_bp2build_metrics.UnconvertedReason
+	nil,                        // 4: soong_build_bp2build_metrics.Bp2BuildMetrics.RuleClassCountEntry
+	nil,                        // 5: soong_build_bp2build_metrics.Bp2BuildMetrics.UnconvertedModulesEntry
+	nil,                        // 6: soong_build_bp2build_metrics.Bp2BuildMetrics.ConvertedModuleTypeCountEntry
+	nil,                        // 7: soong_build_bp2build_metrics.Bp2BuildMetrics.TotalModuleTypeCountEntry
 }
 var file_bp2build_metrics_proto_depIdxs = []int32{
-	2, // 0: soong_build_bp2build_metrics.Bp2BuildMetrics.ruleClassCount:type_name -> soong_build_bp2build_metrics.Bp2BuildMetrics.RuleClassCountEntry
-	3, // 1: soong_build_bp2build_metrics.Bp2BuildMetrics.convertedModuleTypeCount:type_name -> soong_build_bp2build_metrics.Bp2BuildMetrics.ConvertedModuleTypeCountEntry
-	4, // 2: soong_build_bp2build_metrics.Bp2BuildMetrics.totalModuleTypeCount:type_name -> soong_build_bp2build_metrics.Bp2BuildMetrics.TotalModuleTypeCountEntry
-	1, // 3: soong_build_bp2build_metrics.Bp2BuildMetrics.events:type_name -> soong_build_bp2build_metrics.Event
-	4, // [4:4] is the sub-list for method output_type
-	4, // [4:4] is the sub-list for method input_type
-	4, // [4:4] is the sub-list for extension type_name
-	4, // [4:4] is the sub-list for extension extendee
-	0, // [0:4] is the sub-list for field type_name
+	4, // 0: soong_build_bp2build_metrics.Bp2BuildMetrics.ruleClassCount:type_name -> soong_build_bp2build_metrics.Bp2BuildMetrics.RuleClassCountEntry
+	5, // 1: soong_build_bp2build_metrics.Bp2BuildMetrics.unconvertedModules:type_name -> soong_build_bp2build_metrics.Bp2BuildMetrics.UnconvertedModulesEntry
+	6, // 2: soong_build_bp2build_metrics.Bp2BuildMetrics.convertedModuleTypeCount:type_name -> soong_build_bp2build_metrics.Bp2BuildMetrics.ConvertedModuleTypeCountEntry
+	7, // 3: soong_build_bp2build_metrics.Bp2BuildMetrics.totalModuleTypeCount:type_name -> soong_build_bp2build_metrics.Bp2BuildMetrics.TotalModuleTypeCountEntry
+	2, // 4: soong_build_bp2build_metrics.Bp2BuildMetrics.events:type_name -> soong_build_bp2build_metrics.Event
+	0, // 5: soong_build_bp2build_metrics.UnconvertedReason.type:type_name -> soong_build_bp2build_metrics.UnconvertedReasonType
+	3, // 6: soong_build_bp2build_metrics.Bp2BuildMetrics.UnconvertedModulesEntry.value:type_name -> soong_build_bp2build_metrics.UnconvertedReason
+	7, // [7:7] is the sub-list for method output_type
+	7, // [7:7] is the sub-list for method input_type
+	7, // [7:7] is the sub-list for extension type_name
+	7, // [7:7] is the sub-list for extension extendee
+	0, // [0:7] is the sub-list for field type_name
 }
 
 func init() { file_bp2build_metrics_proto_init() }
@@ -374,19 +555,32 @@
 				return nil
 			}
 		}
+		file_bp2build_metrics_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*UnconvertedReason); 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_bp2build_metrics_proto_rawDesc,
-			NumEnums:      0,
-			NumMessages:   5,
+			NumEnums:      1,
+			NumMessages:   7,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
 		GoTypes:           file_bp2build_metrics_proto_goTypes,
 		DependencyIndexes: file_bp2build_metrics_proto_depIdxs,
+		EnumInfos:         file_bp2build_metrics_proto_enumTypes,
 		MessageInfos:      file_bp2build_metrics_proto_msgTypes,
 	}.Build()
 	File_bp2build_metrics_proto = out.File
diff --git a/ui/metrics/bp2build_metrics_proto/bp2build_metrics.proto b/ui/metrics/bp2build_metrics_proto/bp2build_metrics.proto
index 9ff4ae2..49cb2b4 100644
--- a/ui/metrics/bp2build_metrics_proto/bp2build_metrics.proto
+++ b/ui/metrics/bp2build_metrics_proto/bp2build_metrics.proto
@@ -39,6 +39,9 @@
   // List of converted modules
   repeated string convertedModules = 5;
 
+  // Unconverted modules, mapped to the reason the module was not converted.
+  map<string, UnconvertedReason> unconvertedModules = 11;
+
   // Counts of converted modules by module type.
   map<string, uint64> convertedModuleTypeCount = 6;
 
@@ -63,3 +66,40 @@
   // The number of nanoseconds elapsed since start_time.
   uint64 real_time = 3;
 }
+
+message UnconvertedReason {
+  // The type of reason that the module could not be converted.
+  UnconvertedReasonType type = 1;
+
+  // Descriptive details describing why the module could not be converted.
+  // This detail should be kept very short and should be in the context of
+  // the type. (Otherwise, this would significantly bloat metrics.)
+  string detail = 2;
+}
+
+enum UnconvertedReasonType {
+  // Bp2build does not know how to convert this specific module for some reason
+  // not covered by other reason types. The reason detail should explain the
+  // specific issue.
+  UNSUPPORTED = 0;
+
+  // The module was already defined in a BUILD file available in the source tree.
+  DEFINED_IN_BUILD_FILE = 1;
+
+  // The module was explicitly denylisted by name.
+  DENYLISTED = 2;
+
+  // The module's type has no bp2build implementation.
+  TYPE_UNSUPPORTED = 3;
+
+  // The module has a property not yet supported. The detail field should
+  // name the unsupported property name.
+  PROPERTY_UNSUPPORTED = 4;
+
+  // The module has an unconverted dependency. The detail should consist of
+  // the name of the unconverted module.
+  UNCONVERTED_DEP = 5;
+
+  // The module has a source file with the same name as the module itself.
+  SRC_NAME_COLLISION = 6;
+}
\ No newline at end of file
diff --git a/ui/status/ninja.go b/ui/status/ninja.go
index fc0e21a..fb760ac 100644
--- a/ui/status/ninja.go
+++ b/ui/status/ninja.go
@@ -174,6 +174,7 @@
 						IOOutputKB:                 msg.EdgeFinished.GetIoOutputKb(),
 						VoluntaryContextSwitches:   msg.EdgeFinished.GetVoluntaryContextSwitches(),
 						InvoluntaryContextSwitches: msg.EdgeFinished.GetInvoluntaryContextSwitches(),
+						Tags:                       msg.EdgeFinished.GetTags(),
 					},
 				})
 			}
diff --git a/ui/status/ninja_frontend/frontend.pb.go b/ui/status/ninja_frontend/frontend.pb.go
index bcadc67..d0c4953 100644
--- a/ui/status/ninja_frontend/frontend.pb.go
+++ b/ui/status/ninja_frontend/frontend.pb.go
@@ -14,8 +14,8 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.26.0
-// 	protoc        v3.9.1
+// 	protoc-gen-go v1.28.1
+// 	protoc        v3.21.12
 // source: frontend.proto
 
 package ninja_frontend
@@ -459,6 +459,9 @@
 	VoluntaryContextSwitches *uint64 `protobuf:"varint,12,opt,name=voluntary_context_switches,json=voluntaryContextSwitches" json:"voluntary_context_switches,omitempty"`
 	// Involuntary context switches
 	InvoluntaryContextSwitches *uint64 `protobuf:"varint,13,opt,name=involuntary_context_switches,json=involuntaryContextSwitches" json:"involuntary_context_switches,omitempty"`
+	// Arbitrary tags for build system profiling (module names and types, rule
+	// names, etc). Format of the string is implementation defined.
+	Tags *string `protobuf:"bytes,14,opt,name=tags" json:"tags,omitempty"`
 }
 
 func (x *Status_EdgeFinished) Reset() {
@@ -584,6 +587,13 @@
 	return 0
 }
 
+func (x *Status_EdgeFinished) GetTags() string {
+	if x != nil && x.Tags != nil {
+		return *x.Tags
+	}
+	return ""
+}
+
 type Status_Message struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -650,7 +660,7 @@
 
 var file_frontend_proto_rawDesc = []byte{
 	0x0a, 0x0e, 0x66, 0x72, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x64, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f,
-	0x12, 0x05, 0x6e, 0x69, 0x6e, 0x6a, 0x61, 0x22, 0xb4, 0x0a, 0x0a, 0x06, 0x53, 0x74, 0x61, 0x74,
+	0x12, 0x05, 0x6e, 0x69, 0x6e, 0x6a, 0x61, 0x22, 0xc8, 0x0a, 0x0a, 0x06, 0x53, 0x74, 0x61, 0x74,
 	0x75, 0x73, 0x12, 0x39, 0x0a, 0x0b, 0x74, 0x6f, 0x74, 0x61, 0x6c, 0x5f, 0x65, 0x64, 0x67, 0x65,
 	0x73, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x18, 0x2e, 0x6e, 0x69, 0x6e, 0x6a, 0x61, 0x2e,
 	0x53, 0x74, 0x61, 0x74, 0x75, 0x73, 0x2e, 0x54, 0x6f, 0x74, 0x61, 0x6c, 0x45, 0x64, 0x67, 0x65,
@@ -694,7 +704,7 @@
 	0x65, 0x73, 0x63, 0x12, 0x18, 0x0a, 0x07, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x18, 0x06,
 	0x20, 0x01, 0x28, 0x09, 0x52, 0x07, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x12, 0x18, 0x0a,
 	0x07, 0x63, 0x6f, 0x6e, 0x73, 0x6f, 0x6c, 0x65, 0x18, 0x07, 0x20, 0x01, 0x28, 0x08, 0x52, 0x07,
-	0x63, 0x6f, 0x6e, 0x73, 0x6f, 0x6c, 0x65, 0x1a, 0xdf, 0x03, 0x0a, 0x0c, 0x45, 0x64, 0x67, 0x65,
+	0x63, 0x6f, 0x6e, 0x73, 0x6f, 0x6c, 0x65, 0x1a, 0xf3, 0x03, 0x0a, 0x0c, 0x45, 0x64, 0x67, 0x65,
 	0x46, 0x69, 0x6e, 0x69, 0x73, 0x68, 0x65, 0x64, 0x12, 0x0e, 0x0a, 0x02, 0x69, 0x64, 0x18, 0x01,
 	0x20, 0x01, 0x28, 0x0d, 0x52, 0x02, 0x69, 0x64, 0x12, 0x19, 0x0a, 0x08, 0x65, 0x6e, 0x64, 0x5f,
 	0x74, 0x69, 0x6d, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x07, 0x65, 0x6e, 0x64, 0x54,
@@ -724,19 +734,20 @@
 	0x75, 0x6e, 0x74, 0x61, 0x72, 0x79, 0x5f, 0x63, 0x6f, 0x6e, 0x74, 0x65, 0x78, 0x74, 0x5f, 0x73,
 	0x77, 0x69, 0x74, 0x63, 0x68, 0x65, 0x73, 0x18, 0x0d, 0x20, 0x01, 0x28, 0x04, 0x52, 0x1a, 0x69,
 	0x6e, 0x76, 0x6f, 0x6c, 0x75, 0x6e, 0x74, 0x61, 0x72, 0x79, 0x43, 0x6f, 0x6e, 0x74, 0x65, 0x78,
-	0x74, 0x53, 0x77, 0x69, 0x74, 0x63, 0x68, 0x65, 0x73, 0x1a, 0x92, 0x01, 0x0a, 0x07, 0x4d, 0x65,
-	0x73, 0x73, 0x61, 0x67, 0x65, 0x12, 0x37, 0x0a, 0x05, 0x6c, 0x65, 0x76, 0x65, 0x6c, 0x18, 0x01,
-	0x20, 0x01, 0x28, 0x0e, 0x32, 0x1b, 0x2e, 0x6e, 0x69, 0x6e, 0x6a, 0x61, 0x2e, 0x53, 0x74, 0x61,
-	0x74, 0x75, 0x73, 0x2e, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x2e, 0x4c, 0x65, 0x76, 0x65,
-	0x6c, 0x3a, 0x04, 0x49, 0x4e, 0x46, 0x4f, 0x52, 0x05, 0x6c, 0x65, 0x76, 0x65, 0x6c, 0x12, 0x18,
-	0x0a, 0x07, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52,
-	0x07, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x22, 0x34, 0x0a, 0x05, 0x4c, 0x65, 0x76, 0x65,
-	0x6c, 0x12, 0x08, 0x0a, 0x04, 0x49, 0x4e, 0x46, 0x4f, 0x10, 0x00, 0x12, 0x0b, 0x0a, 0x07, 0x57,
-	0x41, 0x52, 0x4e, 0x49, 0x4e, 0x47, 0x10, 0x01, 0x12, 0x09, 0x0a, 0x05, 0x45, 0x52, 0x52, 0x4f,
-	0x52, 0x10, 0x02, 0x12, 0x09, 0x0a, 0x05, 0x44, 0x45, 0x42, 0x55, 0x47, 0x10, 0x03, 0x42, 0x2a,
-	0x48, 0x03, 0x5a, 0x26, 0x61, 0x6e, 0x64, 0x72, 0x6f, 0x69, 0x64, 0x2f, 0x73, 0x6f, 0x6f, 0x6e,
-	0x67, 0x2f, 0x75, 0x69, 0x2f, 0x73, 0x74, 0x61, 0x74, 0x75, 0x73, 0x2f, 0x6e, 0x69, 0x6e, 0x6a,
-	0x61, 0x5f, 0x66, 0x72, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x64,
+	0x74, 0x53, 0x77, 0x69, 0x74, 0x63, 0x68, 0x65, 0x73, 0x12, 0x12, 0x0a, 0x04, 0x74, 0x61, 0x67,
+	0x73, 0x18, 0x0e, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x74, 0x61, 0x67, 0x73, 0x1a, 0x92, 0x01,
+	0x0a, 0x07, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x12, 0x37, 0x0a, 0x05, 0x6c, 0x65, 0x76,
+	0x65, 0x6c, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0e, 0x32, 0x1b, 0x2e, 0x6e, 0x69, 0x6e, 0x6a, 0x61,
+	0x2e, 0x53, 0x74, 0x61, 0x74, 0x75, 0x73, 0x2e, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x2e,
+	0x4c, 0x65, 0x76, 0x65, 0x6c, 0x3a, 0x04, 0x49, 0x4e, 0x46, 0x4f, 0x52, 0x05, 0x6c, 0x65, 0x76,
+	0x65, 0x6c, 0x12, 0x18, 0x0a, 0x07, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x18, 0x02, 0x20,
+	0x01, 0x28, 0x09, 0x52, 0x07, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x22, 0x34, 0x0a, 0x05,
+	0x4c, 0x65, 0x76, 0x65, 0x6c, 0x12, 0x08, 0x0a, 0x04, 0x49, 0x4e, 0x46, 0x4f, 0x10, 0x00, 0x12,
+	0x0b, 0x0a, 0x07, 0x57, 0x41, 0x52, 0x4e, 0x49, 0x4e, 0x47, 0x10, 0x01, 0x12, 0x09, 0x0a, 0x05,
+	0x45, 0x52, 0x52, 0x4f, 0x52, 0x10, 0x02, 0x12, 0x09, 0x0a, 0x05, 0x44, 0x45, 0x42, 0x55, 0x47,
+	0x10, 0x03, 0x42, 0x2a, 0x48, 0x03, 0x5a, 0x26, 0x61, 0x6e, 0x64, 0x72, 0x6f, 0x69, 0x64, 0x2f,
+	0x73, 0x6f, 0x6f, 0x6e, 0x67, 0x2f, 0x75, 0x69, 0x2f, 0x73, 0x74, 0x61, 0x74, 0x75, 0x73, 0x2f,
+	0x6e, 0x69, 0x6e, 0x6a, 0x61, 0x5f, 0x66, 0x72, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x64,
 }
 
 var (
diff --git a/ui/status/ninja_frontend/frontend.proto b/ui/status/ninja_frontend/frontend.proto
index 5730388..6cb4a0d 100644
--- a/ui/status/ninja_frontend/frontend.proto
+++ b/ui/status/ninja_frontend/frontend.proto
@@ -79,6 +79,9 @@
     optional uint64 voluntary_context_switches = 12;
     // Involuntary context switches
     optional uint64 involuntary_context_switches = 13;
+    // Arbitrary tags for build system profiling (module names and types, rule
+    // names, etc). Format of the string is implementation defined.
+    optional string tags = 14;
   }
 
   message Message {
diff --git a/ui/status/status.go b/ui/status/status.go
index a5b4a28..f3e58b6 100644
--- a/ui/status/status.go
+++ b/ui/status/status.go
@@ -85,6 +85,8 @@
 
 	// Involuntary context switches
 	InvoluntaryContextSwitches uint64
+
+	Tags string
 }
 
 // Counts describes the number of actions in each state
diff --git a/ui/tracer/status.go b/ui/tracer/status.go
index a8b4e62..f973613 100644
--- a/ui/tracer/status.go
+++ b/ui/tracer/status.go
@@ -16,6 +16,7 @@
 
 import (
 	"android/soong/ui/status"
+	"strings"
 	"time"
 )
 
@@ -60,6 +61,24 @@
 	}
 }
 
+func (s *statusOutput) parseTags(rawTags string) map[string]string {
+	if rawTags == "" {
+		return nil
+	}
+
+	tags := map[string]string{}
+	for _, pair := range strings.Split(rawTags, ";") {
+		if pair == "" {
+			// Ignore empty tag pairs. It's hard to generate these cleanly from
+			// make so some tag strings might be something like ";key=value".
+			continue
+		}
+		parts := strings.SplitN(pair, "=", 2)
+		tags[parts[0]] = parts[1]
+	}
+	return tags
+}
+
 func (s *statusOutput) FinishAction(result status.ActionResult, counts status.Counts) {
 	start, ok := s.running[result.Action]
 	if !ok {
@@ -90,20 +109,22 @@
 			IOOutputKB:                 result.Stats.IOOutputKB,
 			VoluntaryContextSwitches:   result.Stats.VoluntaryContextSwitches,
 			InvoluntaryContextSwitches: result.Stats.InvoluntaryContextSwitches,
+			Tags:                       s.parseTags(result.Stats.Tags),
 		},
 	})
 }
 
 type statsArg struct {
-	UserTime                   uint32 `json:"user_time"`
-	SystemTime                 uint32 `json:"system_time_ms"`
-	MaxRssKB                   uint64 `json:"max_rss_kb"`
-	MinorPageFaults            uint64 `json:"minor_page_faults"`
-	MajorPageFaults            uint64 `json:"major_page_faults"`
-	IOInputKB                  uint64 `json:"io_input_kb"`
-	IOOutputKB                 uint64 `json:"io_output_kb"`
-	VoluntaryContextSwitches   uint64 `json:"voluntary_context_switches"`
-	InvoluntaryContextSwitches uint64 `json:"involuntary_context_switches"`
+	UserTime                   uint32            `json:"user_time"`
+	SystemTime                 uint32            `json:"system_time_ms"`
+	MaxRssKB                   uint64            `json:"max_rss_kb"`
+	MinorPageFaults            uint64            `json:"minor_page_faults"`
+	MajorPageFaults            uint64            `json:"major_page_faults"`
+	IOInputKB                  uint64            `json:"io_input_kb"`
+	IOOutputKB                 uint64            `json:"io_output_kb"`
+	VoluntaryContextSwitches   uint64            `json:"voluntary_context_switches"`
+	InvoluntaryContextSwitches uint64            `json:"involuntary_context_switches"`
+	Tags                       map[string]string `json:"tags"`
 }
 
 func (s *statusOutput) Flush()                                        {}