Do you mean this statement? Supplements: packageand(libreoffice:libreoffice-gnome) This one is for pulling libreoffice-gnome if both libreoffice and ibus is installed on system because libreoffice-qt4 does not provide enough input method support. BTW, recently, libreoffice-qt5 now implements input method support from 6.2 (but still broken). So I will work to fix the upstream problem and remove the statement above.