Rather than perform an upgrade by modifying all the software packages, and risking breakage, it should be possible to do a clean install of an equivalent system into a new partition.
So the upgrade process would be:-
- Create a new root partition for the new system
- Examine package list of old system
- Cleanly install all these packages (with some replacements as necessary) to the new partition
- Create grub menus to boot both the new and the old system
(Yes, I've skipped a few complexities)
This would also be *extremely useful* in enterprise environments, as it gives a quick recovery path if something fails during the upgrade. And also give lots of re-assurance that you won't end up with a non-functioning system.
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