> Mailman3 has been part of buster and bullseye, but the release of sqlalchemy > 1.4 is not compatible with it and therefore there is a chance that it will > not make it in bookworm. There is nothing that any contributor can do except > taking the time to help mailman upstream to be fixed and work with sqlalchemy > 1.4.
Upstream released a version which is compatible with sqlalchemy 1.4 and which should also fix all other blocking problems in the mailman3 problems. See bug #1023976 for things I am assuming are fixed by it.
