Something is broken in my system / Whonix-Workstation detected, but the meta package non-qubes-whonix-workstation is not installed.

[Patrick]

If you want to test…

Thunderbird / enigmail no longer installed / sudo apt-get dist-upgrade - The following packages will be REMOVED: enigmail

Testes wanted! Try upgrading from Whonix testers repository. Packages thunderbird enigmail torbirdy can be removed. We’ll reinstall them later most likely. A Debian bug report may be required if there is none already to get this sorted in Debain.

sudo whonix_repository --enable --repository testers
sudo apt-get update
sudo apt-get dist-upgrade