I'm baffled, you clearly have python3 installed, but no /var/lib/dpkg/info/python3.preinst and you had to create it by hand?
What do you get with this: ls -la /var/lib/dpkg/info/python3*preinst And this: py3versions -i -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2078356 Title: python3 upgrade has unmet dependencies To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/python3-defaults/+bug/2078356/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
