On 27/12/2024 02:41, Thomas Anderson wrote:
I did get them from Debian sources, so I should be good.
<https://www.debian.org/releases/bookworm/amd64/release-notes/ch-upgrading.en.html>
"Chapter 4. Upgrades from Debian 11 (bullseye)"
from "Release Notes for Debian 12 (bookworm)"
suggests
apt list '?narrow(?installed, ?not(?origin(Debian)))'
to be sure. In addition you may review for 3rd party repositories output of
apt policy
You may try to replicate your setup in a VM and to upgrade it at first.