diff --git a/java/sdk_library.go b/java/sdk_library.go
index bc3e7e9..56b1d39 100644
--- a/java/sdk_library.go
+++ b/java/sdk_library.go
@@ -953,10 +953,6 @@
 	// Path to the header jars of the implementation library
 	// This is non-empty only when api_only is false.
 	implLibraryHeaderJars android.Paths
-
-	// The reference to the implementation library created by the source module.
-	// Is nil if the source module does not exist.
-	implLibraryModule *Library
 }
 
 func (c *commonToSdkLibraryAndImport) initCommon(module commonSdkLibraryAndImportModule) {
@@ -1003,10 +999,6 @@
 	c.doctagPaths = android.PathsForModuleSrc(ctx, c.commonSdkLibraryProperties.Doctag_files)
 }
 
-func (c *commonToSdkLibraryAndImport) getImplLibraryModule() *Library {
-	return c.implLibraryModule
-}
-
 // Module name of the runtime implementation library
 func (c *commonToSdkLibraryAndImport) implLibraryModuleName() string {
 	return c.module.RootLibraryName() + ".impl"
@@ -1383,8 +1375,6 @@
 
 	// sharedLibrary returns true if this can be used as a shared library.
 	sharedLibrary() bool
-
-	getImplLibraryModule() *Library
 }
 
 type SdkLibrary struct {
@@ -1396,8 +1386,6 @@
 	scopeToProperties map[*apiScope]*ApiScopeProperties
 
 	commonToSdkLibraryAndImport
-
-	builtInstalledForApex []dexpreopterInstall
 }
 
 var _ SdkLibraryDependency = (*SdkLibrary)(nil)
@@ -1406,20 +1394,6 @@
 	return module.sdkLibraryProperties.Generate_system_and_test_apis
 }
 
-func (module *SdkLibrary) DexJarBuildPath(ctx android.ModuleErrorfContext) OptionalDexJarPath {
-	if module.implLibraryModule != nil {
-		return module.implLibraryModule.DexJarBuildPath(ctx)
-	}
-	return makeUnsetDexJarPath()
-}
-
-func (module *SdkLibrary) DexJarInstallPath() android.Path {
-	if module.implLibraryModule != nil {
-		return module.implLibraryModule.DexJarInstallPath()
-	}
-	return nil
-}
-
 func (module *SdkLibrary) getGeneratedApiScopes(ctx android.EarlyModuleContext) apiScopes {
 	// Check to see if any scopes have been explicitly enabled. If any have then all
 	// must be.
@@ -1471,10 +1445,6 @@
 var _ android.ModuleWithMinSdkVersionCheck = (*SdkLibrary)(nil)
 
 func (module *SdkLibrary) CheckMinSdkVersion(ctx android.ModuleContext) {
-	CheckMinSdkVersion(ctx, &module.Library)
-}
-
-func CheckMinSdkVersion(ctx android.ModuleContext, module *Library) {
 	android.CheckMinSdkVersion(ctx, module.MinSdkVersion(ctx), func(c android.ModuleContext, do android.PayloadDepsCallback) {
 		ctx.WalkDeps(func(child android.Module, parent android.Module) bool {
 			isExternal := !module.depIsInSameApex(ctx, child)
@@ -1571,6 +1541,10 @@
 		m += "Please see the documentation of the prebuilt_apis module type (and a usage example in prebuilts/sdk) for a convenient way to generate these."
 		ctx.ModuleErrorf(m)
 	}
+	if module.requiresRuntimeImplementationLibrary() {
+		// Only add the deps for the library if it is actually going to be built.
+		module.Library.deps(ctx)
+	}
 }
 
 func (module *SdkLibrary) OutputFiles(tag string) (android.Paths, error) {
@@ -1579,7 +1553,7 @@
 		return paths, err
 	}
 	if module.requiresRuntimeImplementationLibrary() {
-		return module.implLibraryModule.OutputFiles(tag)
+		return module.Library.OutputFiles(tag)
 	}
 	if tag == "" {
 		return nil, nil
@@ -1594,12 +1568,18 @@
 		// TODO (b/331665856): Implement a principled solution for this.
 		module.HideFromMake()
 	}
+	if proptools.String(module.deviceProperties.Min_sdk_version) != "" {
+		module.CheckMinSdkVersion(ctx)
+	}
 
 	module.generateCommonBuildActions(ctx)
 
-	module.stem = proptools.StringDefault(module.overridableProperties.Stem, ctx.ModuleName())
-
-	module.provideHiddenAPIPropertyInfo(ctx)
+	// Only build an implementation library if required.
+	if module.requiresRuntimeImplementationLibrary() {
+		// stubsLinkType must be set before calling Library.GenerateAndroidBuildActions
+		module.Library.stubsLinkType = Unknown
+		module.Library.GenerateAndroidBuildActions(ctx)
+	}
 
 	// Collate the components exported by this module. All scope specific modules are exported but
 	// the impl and xml component modules are not.
@@ -1626,40 +1606,10 @@
 		if tag == implLibraryTag {
 			if dep, ok := android.OtherModuleProvider(ctx, to, JavaInfoProvider); ok {
 				module.implLibraryHeaderJars = append(module.implLibraryHeaderJars, dep.HeaderJars...)
-				module.implLibraryModule = to.(*Library)
-				android.SetProvider(ctx, JavaInfoProvider, dep)
 			}
 		}
 	})
 
-	apexInfo, _ := android.ModuleProvider(ctx, android.ApexInfoProvider)
-	if !apexInfo.IsForPlatform() {
-		module.hideApexVariantFromMake = true
-	}
-
-	if module.implLibraryModule != nil {
-		if ctx.Device() {
-			module.classesJarPaths = android.Paths{module.implLibraryModule.implementationJarFile}
-			module.bootDexJarPath = module.implLibraryModule.bootDexJarPath
-			module.uncompressDexState = module.implLibraryModule.uncompressDexState
-			module.active = module.implLibraryModule.active
-		}
-
-		module.outputFile = module.implLibraryModule.outputFile
-		module.dexJarFile = makeDexJarPathFromPath(module.implLibraryModule.dexJarFile.Path())
-		module.headerJarFile = module.implLibraryModule.headerJarFile
-		module.implementationAndResourcesJar = module.implLibraryModule.implementationAndResourcesJar
-		module.builtInstalledForApex = module.implLibraryModule.builtInstalledForApex
-		module.dexpreopter.configPath = module.implLibraryModule.dexpreopter.configPath
-		module.dexpreopter.outputProfilePathOnHost = module.implLibraryModule.dexpreopter.outputProfilePathOnHost
-
-		if !module.Host() {
-			module.hostdexInstallFile = module.implLibraryModule.hostdexInstallFile
-		}
-
-		android.SetProvider(ctx, blueprint.SrcsFileProviderKey, blueprint.SrcsFileProviderData{SrcPaths: module.implLibraryModule.uniqueSrcFiles.Strings()})
-	}
-
 	// Make the set of components exported by this module available for use elsewhere.
 	exportedComponentInfo := android.ExportedComponentsInfo{Components: android.SortedKeys(exportedComponents)}
 	android.SetProvider(ctx, android.ExportedComponentsInfoProvider, exportedComponentInfo)
@@ -1685,18 +1635,13 @@
 	android.SetProvider(ctx, android.AdditionalSdkInfoProvider, android.AdditionalSdkInfo{additionalSdkInfo})
 }
 
-func (module *SdkLibrary) BuiltInstalledForApex() []dexpreopterInstall {
-	return module.builtInstalledForApex
-}
-
 func (module *SdkLibrary) AndroidMkEntries() []android.AndroidMkEntries {
 	if !module.requiresRuntimeImplementationLibrary() {
 		return nil
 	}
 	entriesList := module.Library.AndroidMkEntries()
-	entries := &entriesList[0]
-	entries.Required = append(entries.Required, module.implLibraryModuleName())
 	if module.sharedLibrary() {
+		entries := &entriesList[0]
 		entries.Required = append(entries.Required, module.xmlPermissionsModuleName())
 	}
 	return entriesList
@@ -1817,21 +1762,20 @@
 		Libs           []string
 		Static_libs    []string
 		Apex_available []string
-		Stem           *string
 	}{
 		Name:       proptools.StringPtr(module.implLibraryModuleName()),
 		Visibility: visibility,
 		// Set the instrument property to ensure it is instrumented when instrumentation is required.
 		Instrument: true,
-
-		Libs: append(module.properties.Libs, module.sdkLibraryProperties.Impl_only_libs...),
-
-		Static_libs: append(module.properties.Static_libs, module.sdkLibraryProperties.Impl_only_static_libs...),
+		// Set the impl_only libs. Note that the module's "Libs" get appended as well, via the
+		// addition of &module.properties below.
+		Libs: module.sdkLibraryProperties.Impl_only_libs,
+		// Set the impl_only static libs. Note that the module's "static_libs" get appended as well, via the
+		// addition of &module.properties below.
+		Static_libs: module.sdkLibraryProperties.Impl_only_static_libs,
 		// Pass the apex_available settings down so that the impl library can be statically
 		// embedded within a library that is added to an APEX. Needed for updatable-media.
 		Apex_available: module.ApexAvailable(),
-
-		Stem: proptools.StringPtr(module.Name()),
 	}
 
 	properties := []interface{}{
@@ -2222,9 +2166,6 @@
 	if depTag == xmlPermissionsFileTag {
 		return true
 	}
-	if dep.Name() == module.implLibraryModuleName() {
-		return true
-	}
 	return module.Library.DepIsInSameApex(mctx, dep)
 }
 
@@ -2650,6 +2591,10 @@
 
 	commonToSdkLibraryAndImport
 
+	// The reference to the implementation library created by the source module.
+	// Is nil if the source module does not exist.
+	implLibraryModule *Library
+
 	// The reference to the xml permissions module created by the source module.
 	// Is nil if the source module does not exist.
 	xmlPermissionsFileModule *sdkLibraryXml
@@ -3613,8 +3558,7 @@
 	s.Min_device_sdk = sdk.commonSdkLibraryProperties.Min_device_sdk
 	s.Max_device_sdk = sdk.commonSdkLibraryProperties.Max_device_sdk
 
-	implLibrary := sdk.getImplLibraryModule()
-	if implLibrary != nil && implLibrary.dexpreopter.dexpreoptProperties.Dex_preopt_result.Profile_guided {
+	if sdk.dexpreopter.dexpreoptProperties.Dex_preopt_result.Profile_guided {
 		s.DexPreoptProfileGuided = proptools.BoolPtr(true)
 	}
 }