On Mon, 4 Apr 2022 11:13:11 +0200 Christoph Klassen <christoph.klassen at intevation.de> wrote: > which package do I need if I want to build Claws Mail with the Python > plugin? I'm using Debian. I'm not using debian but it looks like you need libpython3-dev, python-gi-dev, python3-all-dev, python3-gi, python3. with regards Paul