diff --git a/android/androidmk.go b/android/androidmk.go
index aff43fa..d88ba8f 100644
--- a/android/androidmk.go
+++ b/android/androidmk.go
@@ -60,9 +60,7 @@
 type androidMkSingleton struct{}
 
 func (c *androidMkSingleton) GenerateBuildActions(ctx SingletonContext) {
-	config := ctx.Config().(Config)
-
-	if !config.EmbeddedInMake() {
+	if !ctx.Config().EmbeddedInMake() {
 		return
 	}
 
@@ -74,7 +72,7 @@
 
 	sort.Sort(AndroidModulesByName{androidMkModulesList, ctx})
 
-	transMk := PathForOutput(ctx, "Android"+String(config.ProductVariables.Make_suffix)+".mk")
+	transMk := PathForOutput(ctx, "Android"+String(ctx.Config().ProductVariables.Make_suffix)+".mk")
 	if ctx.Failed() {
 		return
 	}
@@ -184,8 +182,7 @@
 
 		}
 
-		config := ctx.Config().(Config)
-		if amod.Arch().ArchType != config.Targets[amod.Os().Class][0].Arch.ArchType {
+		if amod.Arch().ArchType != ctx.Config().Targets[amod.Os().Class][0].Arch.ArchType {
 			prefix = "2ND_" + prefix
 		}
 	}
diff --git a/android/api_levels.go b/android/api_levels.go
index bdfbc43..a519117 100644
--- a/android/api_levels.go
+++ b/android/api_levels.go
@@ -66,7 +66,7 @@
 		"N-MR1": 25,
 		"O":     26,
 	}
-	for i, codename := range ctx.Config().(Config).PlatformVersionCombinedCodenames() {
+	for i, codename := range ctx.Config().PlatformVersionCombinedCodenames() {
 		apiLevelsMap[codename] = baseApiLevel + i
 	}
 
diff --git a/android/arch.go b/android/arch.go
index 5ea9759..7f9abc6 100644
--- a/android/arch.go
+++ b/android/arch.go
@@ -305,7 +305,7 @@
 	primaryModules := make(map[int]bool)
 
 	for _, class := range osClasses {
-		targets := mctx.AConfig().Targets[class]
+		targets := mctx.Config().Targets[class]
 		if len(targets) == 0 {
 			continue
 		}
@@ -325,7 +325,7 @@
 		var prefer32 bool
 		switch class {
 		case Device:
-			prefer32 = mctx.AConfig().DevicePrefer32BitExecutables()
+			prefer32 = mctx.Config().DevicePrefer32BitExecutables()
 		case HostCross:
 			// Windows builds always prefer 32-bit
 			prefer32 = true
@@ -774,7 +774,7 @@
 		// that are being compiled for 64-bit.  Its expected use case is binaries like linker and
 		// debuggerd that need to know when they are a 32-bit process running on a 64-bit device
 		if os.Class == Device {
-			if ctx.AConfig().Android64() {
+			if ctx.Config().Android64() {
 				field := "Android64"
 				prefix := "target.android64"
 				a.appendProperties(ctx, genProps, targetProp, field, prefix)
@@ -785,13 +785,13 @@
 			}
 
 			if arch.ArchType == X86 && (hasArmAbi(arch) ||
-				hasArmAndroidArch(ctx.AConfig().Targets[Device])) {
+				hasArmAndroidArch(ctx.Config().Targets[Device])) {
 				field := "Arm_on_x86"
 				prefix := "target.arm_on_x86"
 				a.appendProperties(ctx, genProps, targetProp, field, prefix)
 			}
 			if arch.ArchType == X86_64 && (hasArmAbi(arch) ||
-				hasArmAndroidArch(ctx.AConfig().Targets[Device])) {
+				hasArmAndroidArch(ctx.Config().Targets[Device])) {
 				field := "Arm_on_x86_64"
 				prefix := "target.arm_on_x86_64"
 				a.appendProperties(ctx, genProps, targetProp, field, prefix)
diff --git a/android/env.go b/android/env.go
index c03431b..469dfff 100644
--- a/android/env.go
+++ b/android/env.go
@@ -48,7 +48,7 @@
 type envSingleton struct{}
 
 func (c *envSingleton) GenerateBuildActions(ctx SingletonContext) {
-	envDeps := ctx.Config().(Config).EnvDeps()
+	envDeps := ctx.Config().EnvDeps()
 
 	envFile := PathForOutput(ctx, ".soong.environment")
 	if ctx.Failed() {
diff --git a/android/hooks.go b/android/hooks.go
index a9bfd33..57560d2 100644
--- a/android/hooks.go
+++ b/android/hooks.go
@@ -26,7 +26,7 @@
 // before the module has been split into architecture variants, and before defaults modules have
 // been applied.
 type LoadHookContext interface {
-	// TODO: a new context that includes AConfig() but not Target(), etc.?
+	// TODO: a new context that includes Config() but not Target(), etc.?
 	BaseContext
 	AppendProperties(...interface{})
 	PrependProperties(...interface{})
diff --git a/android/makevars.go b/android/makevars.go
index d323613..00a20f5 100644
--- a/android/makevars.go
+++ b/android/makevars.go
@@ -105,13 +105,11 @@
 }
 
 func (s *makeVarsSingleton) GenerateBuildActions(ctx SingletonContext) {
-	config := ctx.Config().(Config)
-
-	if !config.EmbeddedInMake() {
+	if !ctx.Config().EmbeddedInMake() {
 		return
 	}
 
-	outFile := PathForOutput(ctx, "make_vars"+proptools.String(config.ProductVariables.Make_suffix)+".mk").String()
+	outFile := PathForOutput(ctx, "make_vars"+proptools.String(ctx.Config().ProductVariables.Make_suffix)+".mk").String()
 
 	if ctx.Failed() {
 		return
@@ -120,7 +118,7 @@
 	vars := []makeVarsVariable{}
 	for _, provider := range makeVarsProviders {
 		mctx := &makeVarsContext{
-			config: config,
+			config: ctx.Config(),
 			ctx:    ctx,
 			pctx:   provider.pctx,
 		}
diff --git a/android/module.go b/android/module.go
index 0eb4820..c728487 100644
--- a/android/module.go
+++ b/android/module.go
@@ -19,6 +19,7 @@
 	"path/filepath"
 	"sort"
 	"strings"
+	"text/scanner"
 
 	"github.com/google/blueprint"
 	"github.com/google/blueprint/pathtools"
@@ -70,13 +71,36 @@
 }
 
 type BaseContext interface {
-	blueprint.BaseModuleContext
+	BaseModuleContext
 	androidBaseContext
 }
 
+// BaseModuleContext is the same as blueprint.BaseModuleContext except that Config() returns
+// a Config instead of an interface{}.
+type BaseModuleContext interface {
+	ModuleName() string
+	ModuleDir() string
+	Config() Config
+
+	ContainsProperty(name string) bool
+	Errorf(pos scanner.Position, fmt string, args ...interface{})
+	ModuleErrorf(fmt string, args ...interface{})
+	PropertyErrorf(property, fmt string, args ...interface{})
+	Failed() bool
+
+	// GlobWithDeps returns a list of files that match the specified pattern but do not match any
+	// of the patterns in excludes.  It also adds efficient dependencies to rerun the primary
+	// builder whenever a file matching the pattern as added or removed, without rerunning if a
+	// file that does not match the pattern is added to a searched directory.
+	GlobWithDeps(pattern string, excludes []string) ([]string, error)
+
+	Fs() pathtools.FileSystem
+	AddNinjaFileDeps(deps ...string)
+}
+
 type ModuleContext interface {
 	androidBaseContext
-	blueprint.BaseModuleContext
+	BaseModuleContext
 
 	// Deprecated: use ModuleContext.Build instead.
 	ModuleBuild(pctx PackageContext, params ModuleBuildParams)
@@ -482,7 +506,7 @@
 			Rule:      blueprint.Phony,
 			Output:    name,
 			Implicits: allInstalledFiles,
-			Default:   !ctx.Config().(Config).EmbeddedInMake(),
+			Default:   !ctx.Config().EmbeddedInMake(),
 		})
 		deps = append(deps, name)
 		a.installTarget = name
@@ -501,7 +525,7 @@
 
 	if len(deps) > 0 {
 		suffix := ""
-		if ctx.Config().(Config).EmbeddedInMake() {
+		if ctx.Config().EmbeddedInMake() {
 			suffix = "-soong"
 		}
 
@@ -605,6 +629,10 @@
 	return
 }
 
+func (a *androidModuleContext) Config() Config {
+	return a.ModuleContext.Config().(Config)
+}
+
 func (a *androidModuleContext) ModuleBuild(pctx PackageContext, params ModuleBuildParams) {
 	a.Build(pctx, BuildParams(params))
 }
@@ -692,7 +720,7 @@
 	}
 
 	if !aModule.Enabled() {
-		if a.AConfig().AllowMissingDependencies() {
+		if a.Config().AllowMissingDependencies() {
 			a.AddMissingDependencies([]string{a.OtherModuleName(aModule)})
 		} else {
 			a.ModuleErrorf("depends on disabled module %q", a.OtherModuleName(aModule))
@@ -850,11 +878,11 @@
 	}
 
 	if a.Device() {
-		if a.AConfig().SkipDeviceInstall() {
+		if a.Config().SkipDeviceInstall() {
 			return true
 		}
 
-		if a.AConfig().SkipMegaDeviceInstall(fullInstallPath.String()) {
+		if a.Config().SkipMegaDeviceInstall(fullInstallPath.String()) {
 			return true
 		}
 	}
@@ -899,7 +927,7 @@
 			Input:       srcPath,
 			Implicits:   implicitDeps,
 			OrderOnly:   orderOnlyDeps,
-			Default:     !a.AConfig().EmbeddedInMake(),
+			Default:     !a.Config().EmbeddedInMake(),
 		})
 
 		a.installFiles = append(a.installFiles, fullInstallPath)
@@ -919,7 +947,7 @@
 			Description: "install symlink " + fullInstallPath.Base(),
 			Output:      fullInstallPath,
 			OrderOnly:   Paths{srcPath},
-			Default:     !a.AConfig().EmbeddedInMake(),
+			Default:     !a.Config().EmbeddedInMake(),
 			Args: map[string]string{
 				"fromPath": srcPath.String(),
 			},
@@ -1094,7 +1122,7 @@
 	})
 
 	suffix := ""
-	if ctx.Config().(Config).EmbeddedInMake() {
+	if ctx.Config().EmbeddedInMake() {
 		suffix = "-soong"
 	}
 
@@ -1106,7 +1134,7 @@
 	})
 
 	// Make will generate the MODULES-IN-* targets
-	if ctx.Config().(Config).EmbeddedInMake() {
+	if ctx.Config().EmbeddedInMake() {
 		return
 	}
 
@@ -1151,7 +1179,7 @@
 			Implicits: modulesInDir[dir],
 			// HACK: checkbuild should be an optional build, but force it
 			// enabled for now in standalone builds
-			Default: !ctx.Config().(Config).EmbeddedInMake(),
+			Default: !ctx.Config().EmbeddedInMake(),
 		})
 	}
 
diff --git a/android/mutator.go b/android/mutator.go
index cc3f1f3..db3eaa3 100644
--- a/android/mutator.go
+++ b/android/mutator.go
@@ -108,7 +108,7 @@
 type AndroidTopDownMutator func(TopDownMutatorContext)
 
 type TopDownMutatorContext interface {
-	blueprint.BaseModuleContext
+	BaseModuleContext
 	androidBaseContext
 
 	OtherModuleExists(name string) bool
@@ -139,8 +139,22 @@
 type AndroidBottomUpMutator func(BottomUpMutatorContext)
 
 type BottomUpMutatorContext interface {
-	blueprint.BottomUpMutatorContext
+	BaseModuleContext
 	androidBaseContext
+
+	OtherModuleExists(name string) bool
+	Rename(name string)
+	Module() blueprint.Module
+
+	AddDependency(module blueprint.Module, tag blueprint.DependencyTag, name ...string)
+	AddReverseDependency(module blueprint.Module, tag blueprint.DependencyTag, name string)
+	CreateVariations(...string) []blueprint.Module
+	CreateLocalVariations(...string) []blueprint.Module
+	SetDependencyVariation(string)
+	AddVariationDependencies([]blueprint.Variation, blueprint.DependencyTag, ...string)
+	AddFarVariationDependencies([]blueprint.Variation, blueprint.DependencyTag, ...string)
+	AddInterVariantDependency(tag blueprint.DependencyTag, from, to blueprint.Module)
+	ReplaceDependencies(string)
 }
 
 type androidBottomUpMutatorContext struct {
@@ -193,6 +207,14 @@
 	}
 }
 
+func (a *androidTopDownMutatorContext) Config() Config {
+	return a.config
+}
+
+func (a *androidBottomUpMutatorContext) Config() Config {
+	return a.config
+}
+
 func (a *androidTopDownMutatorContext) Module() Module {
 	module, _ := a.TopDownMutatorContext.Module().(Module)
 	return module
diff --git a/android/package_ctx.go b/android/package_ctx.go
index 1626f76..b40e0a9 100644
--- a/android/package_ctx.go
+++ b/android/package_ctx.go
@@ -47,7 +47,7 @@
 var _ PathContext = &configErrorWrapper{}
 var _ errorfContext = &configErrorWrapper{}
 
-func (e *configErrorWrapper) Config() interface{} {
+func (e *configErrorWrapper) Config() Config {
 	return e.config
 }
 func (e *configErrorWrapper) Errorf(format string, args ...interface{}) {
diff --git a/android/paths.go b/android/paths.go
index 71049ee..e0cbd21 100644
--- a/android/paths.go
+++ b/android/paths.go
@@ -29,7 +29,7 @@
 // Path methods.
 type PathContext interface {
 	Fs() pathtools.FileSystem
-	Config() interface{}
+	Config() Config
 	AddNinjaFileDeps(deps ...string)
 }
 
@@ -37,8 +37,8 @@
 	GlobWithDeps(globPattern string, excludes []string) ([]string, error)
 }
 
-var _ PathContext = blueprint.SingletonContext(nil)
-var _ PathContext = blueprint.ModuleContext(nil)
+var _ PathContext = SingletonContext(nil)
+var _ PathContext = ModuleContext(nil)
 
 type ModuleInstallPathContext interface {
 	PathContext
@@ -67,15 +67,6 @@
 
 var _ moduleErrorf = blueprint.ModuleContext(nil)
 
-// pathConfig returns the android Config interface associated to the context.
-// Panics if the context isn't affiliated with an android build.
-func pathConfig(ctx PathContext) Config {
-	if ret, ok := ctx.Config().(Config); ok {
-		return ret
-	}
-	panic("Paths may only be used on Soong builds")
-}
-
 // reportPathError will register an error with the attached context. It
 // attempts ctx.ModuleErrorf for a better error message first, then falls
 // back to ctx.Errorf.
@@ -197,7 +188,7 @@
 
 // PathsForSource returns Paths rooted from SrcDir
 func PathsForSource(ctx PathContext, paths []string) Paths {
-	if pathConfig(ctx).AllowMissingDependencies() {
+	if ctx.Config().AllowMissingDependencies() {
 		if modCtx, ok := ctx.(ModuleContext); ok {
 			ret := make(Paths, 0, len(paths))
 			intermediates := pathForModule(modCtx).withRel("missing")
@@ -247,7 +238,7 @@
 // source directory, but strip the local source directory from the beginning of
 // each string.
 func pathsForModuleSrcFromFullPath(ctx ModuleContext, paths []string) Paths {
-	prefix := filepath.Join(ctx.AConfig().srcDir, ctx.ModuleDir()) + "/"
+	prefix := filepath.Join(ctx.Config().srcDir, ctx.ModuleDir()) + "/"
 	if prefix == "./" {
 		prefix = ""
 	}
@@ -271,7 +262,7 @@
 	}
 	// Use Glob so that if the default doesn't exist, a dependency is added so that when it
 	// is created, we're run again.
-	path := filepath.Join(ctx.AConfig().srcDir, ctx.ModuleDir(), def)
+	path := filepath.Join(ctx.Config().srcDir, ctx.ModuleDir(), def)
 	return ctx.Glob(path, []string{})
 }
 
@@ -476,14 +467,14 @@
 // code that is embedding ninja variables in paths
 func safePathForSource(ctx PathContext, path string) SourcePath {
 	p := validateSafePath(ctx, path)
-	ret := SourcePath{basePath{p, pathConfig(ctx), ""}}
+	ret := SourcePath{basePath{p, ctx.Config(), ""}}
 
 	abs, err := filepath.Abs(ret.String())
 	if err != nil {
 		reportPathError(ctx, "%s", err.Error())
 		return ret
 	}
-	buildroot, err := filepath.Abs(pathConfig(ctx).buildDir)
+	buildroot, err := filepath.Abs(ctx.Config().buildDir)
 	if err != nil {
 		reportPathError(ctx, "%s", err.Error())
 		return ret
@@ -501,14 +492,14 @@
 // On error, it will return a usable, but invalid SourcePath, and report a ModuleError.
 func PathForSource(ctx PathContext, pathComponents ...string) SourcePath {
 	p := validatePath(ctx, pathComponents...)
-	ret := SourcePath{basePath{p, pathConfig(ctx), ""}}
+	ret := SourcePath{basePath{p, ctx.Config(), ""}}
 
 	abs, err := filepath.Abs(ret.String())
 	if err != nil {
 		reportPathError(ctx, "%s", err.Error())
 		return ret
 	}
-	buildroot, err := filepath.Abs(pathConfig(ctx).buildDir)
+	buildroot, err := filepath.Abs(ctx.Config().buildDir)
 	if err != nil {
 		reportPathError(ctx, "%s", err.Error())
 		return ret
@@ -536,14 +527,14 @@
 	}
 
 	p := validatePath(ctx, pathComponents...)
-	path := SourcePath{basePath{p, pathConfig(ctx), ""}}
+	path := SourcePath{basePath{p, ctx.Config(), ""}}
 
 	abs, err := filepath.Abs(path.String())
 	if err != nil {
 		reportPathError(ctx, "%s", err.Error())
 		return OptionalPath{}
 	}
-	buildroot, err := filepath.Abs(pathConfig(ctx).buildDir)
+	buildroot, err := filepath.Abs(ctx.Config().buildDir)
 	if err != nil {
 		reportPathError(ctx, "%s", err.Error())
 		return OptionalPath{}
@@ -652,7 +643,7 @@
 // On error, it will return a usable, but invalid OutputPath, and report a ModuleError.
 func PathForOutput(ctx PathContext, pathComponents ...string) OutputPath {
 	path := validatePath(ctx, pathComponents...)
-	return OutputPath{basePath{path, pathConfig(ctx), ""}}
+	return OutputPath{basePath{path, ctx.Config(), ""}}
 }
 
 func (p OutputPath) writablePath() {}
@@ -853,7 +844,7 @@
 		if ctx.InstallInSanitizerDir() {
 			partition = "data/asan/" + partition
 		}
-		outPaths = []string{"target", "product", ctx.AConfig().DeviceName(), partition}
+		outPaths = []string{"target", "product", ctx.Config().DeviceName(), partition}
 	} else {
 		switch ctx.Os() {
 		case Linux:
@@ -905,7 +896,7 @@
 	if strings.ContainsAny(phony, "$/") {
 		reportPathError(ctx, "Phony target contains invalid character ($ or /): %s", phony)
 	}
-	return OutputPath{basePath{phony, pathConfig(ctx), ""}}
+	return OutputPath{basePath{phony, ctx.Config(), ""}}
 }
 
 type testPath struct {
diff --git a/android/paths_test.go b/android/paths_test.go
index 82ae4dc..1e4ba53 100644
--- a/android/paths_test.go
+++ b/android/paths_test.go
@@ -194,7 +194,7 @@
 	return pathtools.MockFs(nil)
 }
 
-func (m moduleInstallPathContextImpl) Config() interface{} {
+func (m moduleInstallPathContextImpl) Config() Config {
 	return m.androidBaseContextImpl.config
 }
 
diff --git a/android/singleton.go b/android/singleton.go
index f2f575f..87910fd 100644
--- a/android/singleton.go
+++ b/android/singleton.go
@@ -21,8 +21,7 @@
 
 // SingletonContext
 type SingletonContext interface {
-	// TODO(ccross): make this return an android.Config
-	Config() interface{}
+	Config() Config
 
 	ModuleName(module blueprint.Module) string
 	ModuleDir(module blueprint.Module) string
@@ -87,6 +86,10 @@
 	blueprint.SingletonContext
 }
 
+func (s singletonContextAdaptor) Config() Config {
+	return s.SingletonContext.Config().(Config)
+}
+
 func (s singletonContextAdaptor) Variable(pctx PackageContext, name, value string) {
 	s.SingletonContext.Variable(pctx.PackageContext, name, value)
 }
diff --git a/android/variable.go b/android/variable.go
index 13b5abf..c8a672e 100644
--- a/android/variable.go
+++ b/android/variable.go
@@ -258,7 +258,7 @@
 		property := "product_variables." + proptools.PropertyNameForField(name)
 
 		// Check that the variable was set for the product
-		val := reflect.ValueOf(mctx.Config().(Config).ProductVariables).FieldByName(name)
+		val := reflect.ValueOf(mctx.Config().ProductVariables).FieldByName(name)
 		if !val.IsValid() || val.Kind() != reflect.Ptr || val.IsNil() {
 			continue
 		}
diff --git a/cc/binary.go b/cc/binary.go
index 5f81866..206237a 100644
--- a/cc/binary.go
+++ b/cc/binary.go
@@ -182,7 +182,7 @@
 
 	if !ctx.toolchain().Bionic() {
 		if ctx.Os() == android.Linux {
-			if binary.Properties.Static_executable == nil && Bool(ctx.AConfig().ProductVariables.HostStaticBinaries) {
+			if binary.Properties.Static_executable == nil && Bool(ctx.Config().ProductVariables.HostStaticBinaries) {
 				binary.Properties.Static_executable = BoolPtr(true)
 			}
 		} else {
@@ -204,7 +204,7 @@
 	flags = binary.baseLinker.linkerFlags(ctx, flags)
 
 	if ctx.Host() && !binary.static() {
-		if !ctx.AConfig().IsEnvTrue("DISABLE_HOST_PIE") {
+		if !ctx.Config().IsEnvTrue("DISABLE_HOST_PIE") {
 			flags.LdFlags = append(flags.LdFlags, "-pie")
 			if ctx.Windows() {
 				flags.LdFlags = append(flags.LdFlags, "-Wl,-e_mainCRTStartup")
diff --git a/cc/cc.go b/cc/cc.go
index e18b2cc..891dccb 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -945,7 +945,7 @@
 			clang = true
 		}
 
-		if ctx.Device() && ctx.AConfig().DeviceUsesClang() {
+		if ctx.Device() && ctx.Config().DeviceUsesClang() {
 			clang = true
 		}
 	}
@@ -1441,10 +1441,10 @@
 }
 
 func getCurrentNdkPrebuiltVersion(ctx DepsContext) string {
-	if ctx.AConfig().PlatformSdkVersionInt() > config.NdkMaxPrebuiltVersionInt {
+	if ctx.Config().PlatformSdkVersionInt() > config.NdkMaxPrebuiltVersionInt {
 		return strconv.Itoa(config.NdkMaxPrebuiltVersionInt)
 	}
-	return ctx.AConfig().PlatformSdkVersion()
+	return ctx.Config().PlatformSdkVersion()
 }
 
 var Bool = proptools.Bool
diff --git a/cc/cmakelists.go b/cc/cmakelists.go
index 9b32182..c25578e 100644
--- a/cc/cmakelists.go
+++ b/cc/cmakelists.go
@@ -82,7 +82,7 @@
 func getEnvVariable(name string, ctx android.SingletonContext) string {
 	// Using android.Config.Getenv instead of os.getEnv to guarantee soong will
 	// re-run in case this environment variable changes.
-	return ctx.Config().(android.Config).Getenv(name)
+	return ctx.Config().Getenv(name)
 }
 
 func exists(path string) bool {
diff --git a/cc/compiler.go b/cc/compiler.go
index fc2eeec..d510aa3 100644
--- a/cc/compiler.go
+++ b/cc/compiler.go
@@ -218,7 +218,7 @@
 }
 
 func addToModuleList(ctx ModuleContext, list string, module string) {
-	getWallWerrorMap(ctx.AConfig(), list).Store(module, true)
+	getWallWerrorMap(ctx.Config(), list).Store(module, true)
 }
 
 // Create a Flags struct that collects the compile flags from global values,
@@ -360,7 +360,7 @@
 			fmt.Sprintf("${config.%sGlobalCflags}", hod))
 	}
 
-	if Bool(ctx.AConfig().ProductVariables.Brillo) {
+	if Bool(ctx.Config().ProductVariables.Brillo) {
 		flags.GlobalFlags = append(flags.GlobalFlags, "-D__BRILLO__")
 	}
 
diff --git a/cc/ndk_library.go b/cc/ndk_library.go
index e69128c..459d980 100644
--- a/cc/ndk_library.go
+++ b/cc/ndk_library.go
@@ -117,7 +117,7 @@
 		return apiLevel, nil
 	}
 
-	minVersion := ctx.AConfig().MinSupportedSdkVersion()
+	minVersion := ctx.Config().MinSupportedSdkVersion()
 	firstArchVersions := map[android.ArchType]int{
 		android.Arm:    minVersion,
 		android.Arm64:  21,
@@ -188,7 +188,7 @@
 }
 
 func generateStubApiVariants(mctx android.BottomUpMutatorContext, c *stubDecorator) {
-	platformVersion := mctx.AConfig().PlatformSdkVersionInt()
+	platformVersion := mctx.Config().PlatformSdkVersionInt()
 
 	firstSupportedVersion, err := normalizeNdkApiLevel(mctx, String(c.properties.First_version),
 		mctx.Arch())
@@ -207,7 +207,7 @@
 	for version := firstGenVersion; version <= platformVersion; version++ {
 		versionStrs = append(versionStrs, strconv.Itoa(version))
 	}
-	versionStrs = append(versionStrs, mctx.AConfig().PlatformVersionActiveCodenames()...)
+	versionStrs = append(versionStrs, mctx.Config().PlatformVersionActiveCodenames()...)
 	versionStrs = append(versionStrs, "current")
 
 	modules := mctx.CreateVariations(versionStrs...)
diff --git a/cc/pgo.go b/cc/pgo.go
index ea23124..9fea154 100644
--- a/cc/pgo.go
+++ b/cc/pgo.go
@@ -181,7 +181,7 @@
 	//
 	// TODO Validate that each benchmark instruments at least one module
 	pgo.Properties.ShouldProfileModule = false
-	pgoBenchmarks := ctx.AConfig().Getenv("ANDROID_PGO_INSTRUMENT")
+	pgoBenchmarks := ctx.Config().Getenv("ANDROID_PGO_INSTRUMENT")
 	pgoBenchmarksMap := make(map[string]bool)
 	for _, b := range strings.Split(pgoBenchmarks, ",") {
 		pgoBenchmarksMap[b] = true
@@ -215,7 +215,7 @@
 		return props.addProfileGatherFlags(ctx, flags)
 	}
 
-	if !ctx.AConfig().IsEnvTrue("ANDROID_PGO_NO_PROFILE_USE") {
+	if !ctx.Config().IsEnvTrue("ANDROID_PGO_NO_PROFILE_USE") {
 		return props.addProfileUseFlags(ctx, flags)
 	}
 
diff --git a/cc/relocation_packer.go b/cc/relocation_packer.go
index 614f15c..5006623 100644
--- a/cc/relocation_packer.go
+++ b/cc/relocation_packer.go
@@ -53,7 +53,7 @@
 	if ctx.Target().Os != android.Android {
 		enabled = false
 	}
-	if ctx.AConfig().Getenv("DISABLE_RELOCATION_PACKER") == "true" {
+	if ctx.Config().Getenv("DISABLE_RELOCATION_PACKER") == "true" {
 		enabled = false
 	}
 	if ctx.useSdk() {
@@ -68,7 +68,7 @@
 }
 
 func (p *relocationPacker) needsPacking(ctx ModuleContext) bool {
-	if ctx.AConfig().EmbeddedInMake() {
+	if ctx.Config().EmbeddedInMake() {
 		return false
 	}
 	return p.Properties.PackingRelocations
diff --git a/cc/sanitize.go b/cc/sanitize.go
index bf58d0f..1afec26 100644
--- a/cc/sanitize.go
+++ b/cc/sanitize.go
@@ -151,12 +151,12 @@
 
 	if ctx.clang() {
 		if ctx.Host() {
-			globalSanitizers = ctx.AConfig().SanitizeHost()
+			globalSanitizers = ctx.Config().SanitizeHost()
 		} else {
-			arches := ctx.AConfig().SanitizeDeviceArch()
+			arches := ctx.Config().SanitizeDeviceArch()
 			if len(arches) == 0 || inList(ctx.Arch().ArchType.Name, arches) {
-				globalSanitizers = ctx.AConfig().SanitizeDevice()
-				globalSanitizersDiag = ctx.AConfig().SanitizeDeviceDiag()
+				globalSanitizers = ctx.Config().SanitizeDevice()
+				globalSanitizersDiag = ctx.Config().SanitizeDeviceDiag()
 			}
 		}
 	}
@@ -194,13 +194,13 @@
 		}
 
 		if found, globalSanitizers = removeFromList("cfi", globalSanitizers); found && s.Cfi == nil {
-			if !ctx.AConfig().CFIDisabledForPath(ctx.ModuleDir()) {
+			if !ctx.Config().CFIDisabledForPath(ctx.ModuleDir()) {
 				s.Cfi = boolPtr(true)
 			}
 		}
 
 		if found, globalSanitizers = removeFromList("integer_overflow", globalSanitizers); found && s.Integer_overflow == nil {
-			if !ctx.AConfig().IntegerOverflowDisabledForPath(ctx.ModuleDir()) {
+			if !ctx.Config().IntegerOverflowDisabledForPath(ctx.ModuleDir()) {
 				s.Integer_overflow = boolPtr(true)
 			}
 		}
@@ -225,15 +225,15 @@
 	}
 
 	// Enable CFI for all components in the include paths
-	if s.Cfi == nil && ctx.AConfig().CFIEnabledForPath(ctx.ModuleDir()) {
+	if s.Cfi == nil && ctx.Config().CFIEnabledForPath(ctx.ModuleDir()) {
 		s.Cfi = boolPtr(true)
-		if inList("cfi", ctx.AConfig().SanitizeDeviceDiag()) {
+		if inList("cfi", ctx.Config().SanitizeDeviceDiag()) {
 			s.Diag.Cfi = boolPtr(true)
 		}
 	}
 
 	// CFI needs gold linker, and mips toolchain does not have one.
-	if !ctx.AConfig().EnableCFI() || ctx.Arch().ArchType == android.Mips || ctx.Arch().ArchType == android.Mips64 {
+	if !ctx.Config().EnableCFI() || ctx.Arch().ArchType == android.Mips || ctx.Arch().ArchType == android.Mips64 {
 		s.Cfi = nil
 		s.Diag.Cfi = nil
 	}
@@ -611,7 +611,7 @@
 								modules[1].(*Module).Properties.HideFromMake = true
 							}
 						} else {
-							cfiStaticLibs := cfiStaticLibs(mctx.AConfig())
+							cfiStaticLibs := cfiStaticLibs(mctx.Config())
 
 							cfiStaticLibsMutex.Lock()
 							*cfiStaticLibs = append(*cfiStaticLibs, c.Name())
diff --git a/cc/strip.go b/cc/strip.go
index 0bb29c1..a7c2d4e 100644
--- a/cc/strip.go
+++ b/cc/strip.go
@@ -30,7 +30,7 @@
 }
 
 func (stripper *stripper) needsStrip(ctx ModuleContext) bool {
-	return !ctx.AConfig().EmbeddedInMake() && !Bool(stripper.StripProperties.Strip.None)
+	return !ctx.Config().EmbeddedInMake() && !Bool(stripper.StripProperties.Strip.None)
 }
 
 func (stripper *stripper) strip(ctx ModuleContext, in, out android.ModuleOutPath,
diff --git a/cc/tidy.go b/cc/tidy.go
index c31f5ae..6d7c957 100644
--- a/cc/tidy.go
+++ b/cc/tidy.go
@@ -58,7 +58,7 @@
 	}
 
 	// If not explicitly set, check the global tidy flag
-	if tidy.Properties.Tidy == nil && !ctx.AConfig().ClangTidy() {
+	if tidy.Properties.Tidy == nil && !ctx.Config().ClangTidy() {
 		return flags
 	}
 
@@ -82,7 +82,7 @@
 	flags.TidyFlags = append(flags.TidyFlags, "-extra-arg-before=-D__clang_analyzer__")
 
 	tidyChecks := "-checks="
-	if checks := ctx.AConfig().TidyChecks(); len(checks) > 0 {
+	if checks := ctx.Config().TidyChecks(); len(checks) > 0 {
 		tidyChecks += checks
 	} else {
 		tidyChecks += config.TidyChecksForDir(ctx.ModuleDir())
diff --git a/genrule/genrule.go b/genrule/genrule.go
index c142c53..651ec15 100644
--- a/genrule/genrule.go
+++ b/genrule/genrule.go
@@ -134,7 +134,7 @@
 	if g, ok := ctx.Module().(*Module); ok {
 		if len(g.properties.Tools) > 0 {
 			ctx.AddFarVariationDependencies([]blueprint.Variation{
-				{"arch", ctx.AConfig().BuildOsVariant},
+				{"arch", ctx.Config().BuildOsVariant},
 			}, hostToolDepTag, g.properties.Tools...)
 		}
 	}
@@ -168,7 +168,7 @@
 
 				if t, ok := module.(HostToolProvider); ok {
 					if !t.(android.Module).Enabled() {
-						if ctx.AConfig().AllowMissingDependencies() {
+						if ctx.Config().AllowMissingDependencies() {
 							ctx.AddMissingDependencies([]string{tool})
 						} else {
 							ctx.ModuleErrorf("depends on disabled module %q", tool)
diff --git a/java/app.go b/java/app.go
index fd1fe33..bd9ed2a 100644
--- a/java/app.go
+++ b/java/app.go
@@ -120,9 +120,9 @@
 
 	certificate := String(a.appProperties.Certificate)
 	if certificate == "" {
-		certificate = ctx.AConfig().DefaultAppCertificate(ctx).String()
+		certificate = ctx.Config().DefaultAppCertificate(ctx).String()
 	} else if dir, _ := filepath.Split(certificate); dir == "" {
-		certificate = filepath.Join(ctx.AConfig().DefaultAppCertificateDir(ctx).String(), certificate)
+		certificate = filepath.Join(ctx.Config().DefaultAppCertificateDir(ctx).String(), certificate)
 	} else {
 		certificate = filepath.Join(android.PathForSource(ctx).String(), certificate)
 	}
@@ -236,34 +236,34 @@
 	sdkVersion := String(a.deviceProperties.Sdk_version)
 	switch sdkVersion {
 	case "", "current", "system_current", "test_current":
-		sdkVersion = ctx.AConfig().AppsDefaultVersionName()
+		sdkVersion = ctx.Config().AppsDefaultVersionName()
 	}
 
 	linkFlags = append(linkFlags, "--min-sdk-version "+sdkVersion)
 	linkFlags = append(linkFlags, "--target-sdk-version "+sdkVersion)
 
 	// Product characteristics
-	if !hasProduct && len(ctx.AConfig().ProductAAPTCharacteristics()) > 0 {
-		linkFlags = append(linkFlags, "--product", ctx.AConfig().ProductAAPTCharacteristics())
+	if !hasProduct && len(ctx.Config().ProductAAPTCharacteristics()) > 0 {
+		linkFlags = append(linkFlags, "--product", ctx.Config().ProductAAPTCharacteristics())
 	}
 
 	// Product AAPT config
-	for _, aaptConfig := range ctx.AConfig().ProductAAPTConfig() {
+	for _, aaptConfig := range ctx.Config().ProductAAPTConfig() {
 		linkFlags = append(linkFlags, "-c", aaptConfig)
 	}
 
 	// Product AAPT preferred config
-	if len(ctx.AConfig().ProductAAPTPreferredConfig()) > 0 {
-		linkFlags = append(linkFlags, "--preferred-density", ctx.AConfig().ProductAAPTPreferredConfig())
+	if len(ctx.Config().ProductAAPTPreferredConfig()) > 0 {
+		linkFlags = append(linkFlags, "--preferred-density", ctx.Config().ProductAAPTPreferredConfig())
 	}
 
 	// Version code
 	if !hasVersionCode {
-		linkFlags = append(linkFlags, "--version-code", ctx.AConfig().PlatformSdkVersion())
+		linkFlags = append(linkFlags, "--version-code", ctx.Config().PlatformSdkVersion())
 	}
 
 	if !hasVersionName {
-		versionName := proptools.NinjaEscape([]string{ctx.AConfig().AppsDefaultVersionName()})[0]
+		versionName := proptools.NinjaEscape([]string{ctx.Config().AppsDefaultVersionName()})[0]
 		linkFlags = append(linkFlags, "--version-name ", versionName)
 	}
 
@@ -313,7 +313,7 @@
 const overlayDataKey = "overlayDataKey"
 
 func overlayResourceGlob(ctx android.ModuleContext, dir android.Path) []globbedResourceDir {
-	overlayData := ctx.AConfig().Get(overlayDataKey).([]overlayGlobResult)
+	overlayData := ctx.Config().Get(overlayDataKey).([]overlayGlobResult)
 
 	var ret []globbedResourceDir
 
@@ -338,7 +338,7 @@
 
 func (overlaySingleton) GenerateBuildActions(ctx android.SingletonContext) {
 	var overlayData []overlayGlobResult
-	for _, overlay := range ctx.Config().(android.Config).ResourceOverlays() {
+	for _, overlay := range ctx.Config().ResourceOverlays() {
 		var result overlayGlobResult
 		result.dir = overlay
 		files, err := ctx.GlobWithDeps(filepath.Join(overlay, "**/*"), aaptIgnoreFilenames)
@@ -359,7 +359,7 @@
 		overlayData = append(overlayData, result)
 	}
 
-	ctx.Config().(android.Config).Once(overlayDataKey, func() interface{} {
+	ctx.Config().Once(overlayDataKey, func() interface{} {
 		return overlayData
 	})
 }
diff --git a/java/builder.go b/java/builder.go
index 4be3b04..be40103 100644
--- a/java/builder.go
+++ b/java/builder.go
@@ -386,7 +386,7 @@
 	dumpDir := android.PathForModuleOut(ctx, "desugar", "classes")
 
 	javaFlags := ""
-	if ctx.AConfig().UseOpenJDK9() {
+	if ctx.Config().UseOpenJDK9() {
 		javaFlags = "--add-opens java.base/java.lang.invoke=ALL-UNNAMED"
 	}
 
diff --git a/java/java.go b/java/java.go
index 0a3b9b4..82ff827 100644
--- a/java/java.go
+++ b/java/java.go
@@ -271,7 +271,7 @@
 		jarPath := android.ExistentPathForSource(ctx, "sdkdir", jar)
 		aidlPath := android.ExistentPathForSource(ctx, "sdkdir", aidl)
 
-		if (!jarPath.Valid() || !aidlPath.Valid()) && ctx.AConfig().AllowMissingDependencies() {
+		if (!jarPath.Valid() || !aidlPath.Valid()) && ctx.Config().AllowMissingDependencies() {
 			return sdkDep{
 				invalidVersion: true,
 				module:         "sdk_v" + v,
@@ -303,7 +303,7 @@
 	//	}
 	//}
 
-	if ctx.AConfig().UnbundledBuild() && v != "" {
+	if ctx.Config().UnbundledBuild() && v != "" {
 		return toFile(v)
 	}
 
@@ -331,14 +331,14 @@
 			sdkDep := decodeSdkDep(ctx, String(j.deviceProperties.Sdk_version))
 			if sdkDep.useDefaultLibs {
 				ctx.AddDependency(ctx.Module(), bootClasspathTag, config.DefaultBootclasspathLibraries...)
-				if ctx.AConfig().TargetOpenJDK9() {
+				if ctx.Config().TargetOpenJDK9() {
 					ctx.AddDependency(ctx.Module(), systemModulesTag, config.DefaultSystemModules)
 				}
 				if !proptools.Bool(j.properties.No_framework_libs) {
 					ctx.AddDependency(ctx.Module(), libTag, config.DefaultLibraries...)
 				}
 			} else if sdkDep.useModule {
-				if ctx.AConfig().TargetOpenJDK9() {
+				if ctx.Config().TargetOpenJDK9() {
 					ctx.AddDependency(ctx.Module(), systemModulesTag, sdkDep.systemModules)
 				}
 				ctx.AddDependency(ctx.Module(), bootClasspathTag, sdkDep.module)
@@ -346,7 +346,7 @@
 		} else if j.deviceProperties.System_modules == nil {
 			ctx.PropertyErrorf("no_standard_libs",
 				"system_modules is required to be set when no_standard_libs is true, did you mean no_framework_libs?")
-		} else if *j.deviceProperties.System_modules != "none" && ctx.AConfig().TargetOpenJDK9() {
+		} else if *j.deviceProperties.System_modules != "none" && ctx.Config().TargetOpenJDK9() {
 			ctx.AddDependency(ctx.Module(), systemModulesTag, *j.deviceProperties.System_modules)
 		}
 	}
@@ -503,10 +503,10 @@
 
 	// javac flags.
 	javacFlags := j.properties.Javacflags
-	if ctx.AConfig().TargetOpenJDK9() {
+	if ctx.Config().TargetOpenJDK9() {
 		javacFlags = append(javacFlags, j.properties.Openjdk9.Javacflags...)
 	}
-	if ctx.AConfig().MinimizeJavaDebugInfo() {
+	if ctx.Config().MinimizeJavaDebugInfo() {
 		// Override the -g flag passed globally to remove local variable debug info to reduce
 		// disk and memory usage.
 		javacFlags = append(javacFlags, "-g:source,lines")
@@ -523,7 +523,7 @@
 		flags.javaVersion = *j.properties.Java_version
 	} else if ctx.Device() && sdk <= 23 {
 		flags.javaVersion = "1.7"
-	} else if ctx.Device() && sdk <= 26 || !ctx.AConfig().TargetOpenJDK9() {
+	} else if ctx.Device() && sdk <= 26 || !ctx.Config().TargetOpenJDK9() {
 		flags.javaVersion = "1.8"
 	} else if ctx.Device() && String(j.deviceProperties.Sdk_version) != "" && sdk == 10000 {
 		// TODO(ccross): once we generate stubs we should be able to use 1.9 for sdk_version: "current"
@@ -558,7 +558,7 @@
 	deps := j.collectDeps(ctx)
 	flags := j.collectBuilderFlags(ctx, deps)
 
-	if ctx.AConfig().TargetOpenJDK9() {
+	if ctx.Config().TargetOpenJDK9() {
 		j.properties.Srcs = append(j.properties.Srcs, j.properties.Openjdk9.Srcs...)
 	}
 	srcFiles := ctx.ExpandSources(j.properties.Srcs, j.properties.Exclude_srcs)
@@ -613,7 +613,7 @@
 	}
 
 	enable_sharding := false
-	if ctx.Device() && !ctx.AConfig().IsEnvFalse("TURBINE_ENABLED") {
+	if ctx.Device() && !ctx.Config().IsEnvFalse("TURBINE_ENABLED") {
 		if j.properties.Javac_shard_size != nil && *(j.properties.Javac_shard_size) > 0 {
 			enable_sharding = true
 			if len(j.properties.Annotation_processors) != 0 ||
@@ -634,7 +634,7 @@
 	}
 	if len(uniqueSrcFiles) > 0 || len(srcJars) > 0 {
 		var extraJarDeps android.Paths
-		if ctx.AConfig().IsEnvTrue("RUN_ERROR_PRONE") {
+		if ctx.Config().IsEnvTrue("RUN_ERROR_PRONE") {
 			// If error-prone is enabled, add an additional rule to compile the java files into
 			// a separate set of classes (so that they don't overwrite the normal ones and require
 			// a rebuild when error-prone is turned off).
@@ -737,13 +737,13 @@
 		outputFile = j.desugar(ctx, flags, outputFile, jarName)
 	}
 
-	if ctx.AConfig().IsEnvTrue("EMMA_INSTRUMENT_FRAMEWORK") {
+	if ctx.Config().IsEnvTrue("EMMA_INSTRUMENT_FRAMEWORK") {
 		if inList(ctx.ModuleName(), config.InstrumentFrameworkModules) {
 			j.properties.Instrument = true
 		}
 	}
 
-	if ctx.AConfig().IsEnvTrue("EMMA_INSTRUMENT") && j.properties.Instrument {
+	if ctx.Config().IsEnvTrue("EMMA_INSTRUMENT") && j.properties.Instrument {
 		outputFile = j.instrument(ctx, flags, outputFile, jarName)
 	}
 
@@ -846,11 +846,11 @@
 		dxFlags = append(dxFlags, "--no-locals")
 	}
 
-	if ctx.AConfig().Getenv("NO_OPTIMIZE_DX") != "" {
+	if ctx.Config().Getenv("NO_OPTIMIZE_DX") != "" {
 		dxFlags = append(dxFlags, "--no-optimize")
 	}
 
-	if ctx.AConfig().Getenv("GENERATE_DEX_DEBUG") != "" {
+	if ctx.Config().Getenv("GENERATE_DEX_DEBUG") != "" {
 		dxFlags = append(dxFlags,
 			"--debug",
 			"--verbose",
@@ -875,7 +875,7 @@
 func (j *Module) minSdkVersionNumber(ctx android.ModuleContext) string {
 	switch String(j.deviceProperties.Sdk_version) {
 	case "", "current", "test_current", "system_current":
-		return strconv.Itoa(ctx.AConfig().DefaultAppTargetSdkInt())
+		return strconv.Itoa(ctx.Config().DefaultAppTargetSdkInt())
 	default:
 		return String(j.deviceProperties.Sdk_version)
 	}
diff --git a/java/system_modules.go b/java/system_modules.go
index c3e40ca..5234d17 100644
--- a/java/system_modules.go
+++ b/java/system_modules.go
@@ -121,7 +121,7 @@
 
 	jars = append(jars, android.PathsForModuleSrc(ctx, system.properties.Jars)...)
 
-	if ctx.AConfig().TargetOpenJDK9() {
+	if ctx.Config().TargetOpenJDK9() {
 		system.outputFile = TransformJarsToSystemModules(ctx, "java.base", jars)
 	}
 }