Thanks for putting together that how-to that helps in your situation where LXC updates coming with SFOS updates would fail. I'm not entirely sure what could be the part that helps in your case, probably just being able to use the older LXC packages due to kernel requirements not entirely met on your port. Aside from that, it's likely that not everything else is necessary. I recommend trying those instructions after the LXC downvrade part at least to see where is the culprit, before going fully manual (but if so, it's best doing it using the install script supplied with harbour-containers to pinpoint where it fails): https://github.com/sailfish-containe...#start-desktop

In most cases, installing from the Chum repository should still work out of the box and be a one-click action, with better upgradability and dependence resolving. I understand that this may fail on some devices that might be missing some kernel requirements, and it's great that you found how to keep using containers and configuration scripts despite those issues, but it would be good to disambiguate that these are peculiar cases and the official method should still be attempted first by other users.

I haven't done it in a long time and have no updated SailfishOS device to try, but even the precompiled xwayland download still seems to work from the automated scripts (which fetch them from the repo itself so Mega is not necessary: https://github.com/sailfish-containe...eleases/tag/b1).

Some people have installed both Debian and Kali today successfuly on SailfishOS 5 (they have not tested Arch, so not sure if that one still works), so that's good news that the thing still works!