I think I found what's happening : I compared various /var/lib/dpkg/status and /var/lib/apt/lists/ppa*_Packages entries. All the packages that keep reinstalling have a Pre-Depend field in the status file but not in the Packages file. Manually adding it in the Packages does the trick.
It seems soyuz is removing the Pre-Depend field... -- apt reinstalls same package from '~ppa1' again and again https://bugs.launchpad.net/bugs/152317 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs