Expecting Debian Bullseye release to happen pretty shortly (by the end of September 2021) PostgreSQL 13.2 setup has been verified on Debian Bullseye/sid as Oracle’s Virtual Box 6.1.22 Guest running in EFI mode along with ongoing hackery of PyQT5 code mentioned in my recent post at Lxer.com

Source: LXer – Setting up PostgreSQL 13.2&&Python VENV verified by another PyQT5 module on Debian Bullseye