New comment by q66 on void-packages repository https://github.com/void-linux/void-packages/pull/17766#issuecomment-576322825 Comment: As far as I can see those modules are not for the interface designer, but rather they contain widget implementations that can be used at runtime by applications *as well as the designer*, same with the xfce plugin. I.e. the modules are loaded and used by `libgladeui`, which exposes them both to the interface designer itself as well as applications with interfaces designed using GLADE. That's why it does not make sense to move the xfce plugin, and that's why it makes sense to do what i described above.