I tested an upgrade from Bionic to Focal with 'do-release-upgrade -p' using the apt-clone file mentioned in the bug description and an upgrade was successfully calculated.
ubuntu@grown-crow:~$ head /var/log/dist-upgrade/main.log 2021-05-17 21:02:59,243 INFO Using config files '['./DistUpgrade.cfg.bionic', '/etc/update-manager/release-upgrades.d/ubuntu-advantage-upgrades.cfg']' 2021-05-17 21:02:59,244 INFO uname information: 'Linux grown-crow 5.11.0-17-generic #18-Ubuntu SMP Thu May 6 20:10:11 UTC 2021 x86_64' 2021-05-17 21:02:59,495 INFO apt version: '1.6.13' 2021-05-17 21:02:59,495 INFO python version: '3.6.9 (default, Jan 26 2021, 15:33:00) [GCC 8.4.0]' 2021-05-17 21:02:59,498 INFO release-upgrader version '20.04.33' started 2021-05-17 21:02:59,502 INFO locale: 'en_US' 'UTF-8' 2021-05-17 21:02:59,566 WARNING estimate_kernel_initrd_size_in_boot() returned '0' for kernel? 2021-05-17 21:02:59,566 WARNING estimate_kernel_initrd_size_in_boot() returned '0' for initrd? 2021-05-17 21:02:59,579 DEBUG Using 'DistUpgradeViewText' view ubuntu@grown-crow:~$ grep "Do you want to start" /var/log/dist-upgrade/screenlog.0 Do you want to start the upgrade? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1928397 Title: ensure python is marked for removal when upgrading from 18.04 to 20.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1928397/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
