Subcomponents require public constructors on pure-static modules

Example:

@Module
class MyModule {
    @Provides
    static String provideStaticDependency() {
        return "a static dependency";
    }

    private MyModule() {
        throw new UnsupportedOperationException("No instances!");
    }
}

@Subcomponent(modules = MyModule.class)
interface MySubComponent {
    String staticDependency();
}

@Component
interface MyComponent {
    MySubComponent subComponent();
}

Dagger complains:

error: MySubComponent requires modules which have no visible default constructors. Add the following modules as parameters to this method: MyModule
    MySubComponent subComponent();
                   ^

If I make the module constructor public, it solves the warning, but the generated code never calls that constructor (as is evidenced by the fact that my application never crashes).

[gabrielittner]

Also happens for abstract modules of subcomponents which only have @Binds methods.

[gk5885]

Hey, thanks for the bump. I was actually working on this just the other day because it was annoying me too and we should have fix for the next release.