Package: mailman3 Version: 3.2.0-4~bpo9+1 Dear Maintainer,
The mailman3 dependencies can not be satisfied with python3-alembic from stretch-backports: Package: mailman3 Depends: python3-alembic, python3-sqlalchemy (>= 1.2.3) Package: python3-alembic Version: 1.0.0-2~bpo9+1 Depends: python3-sqlalchemy (>= 1.0~), python3-sqlalchemy (<< 1.1) The python3-sqlalchemy dependency is conflicting. The only way to resolve this is to downgrade python3-alembic to stretch version: Package: python3-alembic Version: 0.8.8-2 Depends: python3-sqlalchemy (>= 0.7.6) Perhaps this bug should be filed under python3-alembic to request backports upgrade (although buster is 1.0.0-2 too), but I wanted to make both maintainers and users of mailman3 aware of the issue. Please refile if necessary. -- Sampo Sorsa
