So, did the tests again to get more data Below is the diff between the 2 apt-term.log, which shows the ordering of installation of the packages. The main differences are dates, the version of sosreport being installed and loads of data around "Reading database"
https://paste.ubuntu.com/p/8wZ5bsXcbh/ history.log was not worth looking at, as it was only 25 lines On another note, I was looking for a corner case where I could re- produce the problem. Installed a xenial machine, changed /etc/apt/sources.ist to point to bionic, and then just install sosreport. This reports the same problem as reported by OP. Now, adding my test PPA with the "X-Python3-version: >= 3.6" doesn't see this problem, and installs python3.6 from the bionic repos. So, on that basis, I think this should work as expected. Hopefully that suffices the tests, and let me know if you need anything further -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2038648 Title: package sosreport 4.4-1ubuntu0.18.04.1 failed to install/upgrade: installed sosreport package post-installation script subprocess returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sosreport/+bug/2038648/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs