Re: Greg Smith
> I was able to do all the other upgrade steps as the postgres user. If the
> temporary binaries were installed in the postgres user's home directory
> instead, the whole thing might be possible to do as postgres.
The fix I applied is similar: just chown the /var/tmp/postgresql-*
directory to postgres.
https://salsa.debian.org/postgresql/postgresql-common/-/commit/f8061293088292fb5a08d49cd364a298bf15e1a9
Thanks,
Christoph