Thanks. I thought about doing that, but I would rather not like to mix Raspian bullseye and Debian bullseye-backports.
Is there a good reason against building armhf on deb.torproject.org?
Georg Koppen:
Right. One thing we recommended when talking to relay operators during earlier EOL upgrade periods is adding the debian -backports repository to the Raspberry Pi. It worked well according to the feedback we got. We linked to https://marksrpicluster.blogspot.com/2019/12/add-buster-backports-to-raspber... for general steps (you need to adapt them for bullseye, though).