I've just orphaned appmenu-qt5. Some years ago it was required to
display the menu for Qt5 applications in plasma-widget-menubar. But
the latter hasn't been ported to Plasma 5 yet, and this will probably
never happen. The last upstream activity was more than three years
ago. So it is senseless for me to continue maintaining it.
If someone has another usecase for it, feel free to pick it up. But
note, there was a bug regarding FTBFS in Rawhide .