This package depends or build-depends on python3-venv, which is gone upstream. Please remove or re-implement that usage.
Dear Matthias, as far as I could check, the directory Lib/venv appears as existing in upstream sources (at least for version 3.9.0 of Python). So, python3-venv might be considered as back, isn't it? Can we close this bug for package thonny report now? Best regards, Georges.
Dear Matthias, Can you please explain the problem you reported on https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=970808 ? python3-venv seems to be present in buster, bullseye and sid. Best regards, Aivar