After Manjaro upgrade

Python version: 3.11.3

Was the version of Manjaro you were upgrading from use Python 3.11 as well? If not it's not likely installed for version 3.11 and you'll need to reinstall it. Your config files should still be there as they are stored outside the package it self.

Hm, you may be right (I will double check later)

I installed bdfr from AUR - how would I reinstall?

Reinstalling the package from the AUR should be fine. Rebuild it to be certain, tell me how it goes.

Pacman was stupid, didn't see the bdfr at all, so I decided to manually reinstall. python3 -m pip resulted in a controlled environment error, so I installed pipx and then manually fixed the symlinks.

I've got bdfr downloading again as I type it, so case closed.

... Except maybe provide a better error message somehow, that tells the user to try reinstalling and/or installing system-wide (as I assume pipx does)

Problem reoccurred upon another Manjaro upgrade. This time pipx broke too so I have no way to fix it.