> BTW, the following apt option might be helpful for debugging upgrade > issues in your CI jobs: > > Debug::pkgProblemResolver "true";
In https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988089 we went as far as running apt with: apt dist-upgrade -o Debug::pkgDepCache::AutoInstall=1 -o Debug::pkgDepCache::Marker=1 -o Debug::pkgProblemResolver=1 ..but this easily gets too verbose. Ideally apt had a mode that if it fails, it would output a proper error message with a "trace", but in normal cases stays short and sweet not to clutter the logs too much.