(If it’s of interest, here’s my config.)
Lately my computer can’t find LibreOffice. When I, say, double-click on a .docx file in Dolphin, Dolphin shows me a banner: “Could not find the program ‘libreoffice 7.3’”. Launching it from the KDE launcher doesn’t work either.
I’m using the nixos-unstable channel, and my configuration includes the package “libreoffice” (and none of the many variants like “libreoffice-qt”). To be sure before reporting this, I rebuilt my system (it’s supposed to rebuild every night automatically, and probably does) and the problem remains.