Slightly different way of going about the same thing as comment #2: sudo -H python3.5 -m pip install -U six
I needed to call python3.5 explicitly since I have a newer version of python (3.6) installed, however update-notifier seems to be using the system-level install of python3.5. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1680364 Title: package update-notifier-common 3.168.4 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-notifier/+bug/1680364/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs