Comment 4 for bug 1850136

Ok, after analyzing the case it was clear that it is a mismatch between defaults e.g. postgresql -> postgresql-12 while at the same time e.g. libpq-dev already pointing to 12.

That will be resolved via a coming upload of postgresql-common to Debian (and a matching sync to Ubuntu to drop.

Adding a bug task and revisiting in a few days.
Then we have to re-trigger tests as needed.

[1]: https://git.launchpad.net/ubuntu/+source/postgresql-common/commit/?id=a24ab904d15bd750c1c9139ec67047a87de22eb5

While at it - Big thanks to Myon for all his work on PG!