Dagger ViewModelFactory issue injecting in different Activities

I'm using the well-known Dagger-ViewModelFactory pattern to be able to inject a factory for all the ViewModel in all the activities.

@ActivityScope
class ViewModelFactory @Inject constructor(
    private val creators: MutableMap<Class<out ViewModel>, @JvmSuppressWildcards Provider<ViewModel>>
) : ViewModelProvider.Factory {

    override fun <T : ViewModel> create(modelClass: Class<T>): T {
        val creator = creators[modelClass] ?: creators.entries.firstOrNull {
            modelClass.isAssignableFrom(it.key)
        }?.value ?: throw IllegalArgumentException("unknown model class $modelClass")
        return creator.get() as T
    }
}

The problem I have is that when I inject the factory into an Activity Dagger fails because the providers of the objects for the ViewModels that I'm not going to use are not always accessible. They are not because the modules that contain the providers have not been added.

For example, I have a LogIn activity and a SignUp activity, and this is the way I add the subcomponents for them:

    @ContributesAndroidInjector(modules = [
        ViewModelModule::class,
        FirebaseModule::class,
        LogInModule::class,
        BindLogInModule::class
    ])
    @ActivityScope
    internal abstract fun loginActivityInjector(): LoginActivity

    @ContributesAndroidInjector(modules = [
        ViewModelModule::class,
        FirebaseModule::class,
        SignUpModule::class,
        BindSignUpModule::class
    ])
    @ActivityScope
    internal abstract fun signUpActivityInjector(): SignUpActivity

Please notice that when I create the subcomponent for SignUpActivity I do not add the Module LogInModule because I do not need the bindings in that Module. The result is that I get the error

e: com.package.my.AppComponent.java:8: error: [Dagger/MissingBinding] com.package.my.login.domain.LogInAuthenticator cannot be provided without an @Provides-annotated method. public abstract interface AppComponent extends dagger.android.AndroidInjector { ^ A binding with matching key exists in component: com.package.my.di.ActivityInjectorsModule_LoginActivityInjector$app_prodDebug.LoginActivitySubcomponent com.package.my.login.domain.LogInAuthenticator is injected at com.package.my.login.repository.LoginRepository(logInAuthenticator) com.package.my.login.repository.LoginRepository is injected at com.package.my.login.domain.LoginUseCase(loginRepository) com.package.my.login.domain.LoginUseCase is injected at com.package.my.login.presentation.LoginViewModel(loginUseCase) com.package.my.login.presentation.LoginViewModel is injected at com.package.my.di.ViewModelModule.provideLoginViewModel(viewModel) java.util.Map,javax.inject.Provider> is injected at com.package.my.di.ViewModelFactory(creators) com.package.my.di.ViewModelFactory is injected at com.package.my.di.ViewModelModule.bindViewModelFactory$app_prodDebug(factory) androidx.lifecycle.ViewModelProvider.Factory is injected at com.package.my.login.ui.SignUpActivity.viewModelFactory com.package.my.login.ui.SignUpActivity is injected at dagger.android.AndroidInjector.inject(T) [com.package.my.di.AppComponent → com.package.my.di.ActivityInjectorsModule_SignUpActivityInjector$app_prodDebug.SignUpActivitySubcomponent]

This happens because LogInAuthenticator is provided by LogInModule.

Does this mean that the only solution is to add LogInModule even if I don't really need to create GoogleSignInClient in the SignUpActivity?

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