Similar problem occurred to me when trying to update from 16.04 to 18.04. I had to uninstall the postgresql-plperl-9.5 package first. Then the update was startable.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/996916 Title: postgresql packages in the removal blacklist making it hard to upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/996916/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
