Comment 6 for bug 1907920

I'll put it in friendlier form:
- apt should have a notice
- dpkg-upgrade should function.

Those are the issues.
Breaking down why dpkg-upgrade failed meant randomly (or not quite randomly, I did read the log files for hints) removing system components until it functioned. As python is used for rather a lot, there was a risk of everything apt related failing at any point, and there was no direction to how to solve.
The process also removed a bunch of tools I use daily claiming "obsolete", but those could be reinstalled after. (as they are standard packages, not third party or outside repositories)