given:
        def unused = file("app/src/main/headers/ignore1.h") << "broken!"
        def unusedPrivate = file("app/src/main/cpp/ignore2.h") << "broken!"

        run installApp
        libObjects.snapshot()
        appObjects.snapshot()

        when:
        unused << "even more broken"
        unusedPrivate << "even more broken"
        file("src/main/headers/ignored3.h") << "broken"