this post was submitted on 16 Jun 2023
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Linux
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That sounds really cool… so you could just take that file, do a clean install of nix, then put that file back and it’ll install all your old packages and stuff?
Basically yes
you could also go so far as to wipe your root partition (except for some selected dirs) on every boot, although I don't do that myself: https://github.com/nix-community/impermanence
Not just your packages, but all your config as well.
Also, I believe updates are transactional, so if something goes wrong in the middle it can just abort and your system isn't left in an inconsistant state. And if an update breaks something you can easily roll back to a previous version.