@Scope
@Retention(AnnotationRetention.RUNTIME)
annotation class MyTestScope

class A {
    fun get() = 1
}

@Module
class TestModule {
    @Provides
    @MyTestScope
    fun provideA(): A {
        return A()
    }
}

@MyTestScope
@Component(dependencies = [AppComponent::class],
    modules = [TestModule::class])
interface DependentComponent {
    @Component.Builder
    interface Builder {
        @BindsInstance
        fun appComponent(component: AppComponent): Builder
        fun build(): DependentComponent
     }

     fun inject(application: Application)
}

@Singleton
@Component(modules = [
     AndroidInjectionModule::class,
     ActivityModule::class,
     // etc ....
])
interface AppComponent {
    @Component.Builder
    interface Builder {
        @BindsInstance
        fun language(language: Language): Builder
        @BindsInstance
        fun appContext(appContext: Context): Builder
        fun build(): AppComponent
    }

    fun inject(application: Application)
}