AerynOS: Inode Watchers and Atomic Live Upgrades

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aerynos.com/blog/2025/11/04/musings-on-inode-wa…

Compared to other atomic distributions on the market, the ability to live-update without needing to reboot is an important usability requirement for us, such that the user experience remains friendly to downstream users.

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NixOS has something similar but very unstable. So exciting to see new approaches!

What’s it called in NixOS? I usually just reboot after every update because I don’t trust that everything has properly re-linked and refeshed

nixos-rebuild switch

I mostly use nixos-rebuild boot which is waay more stable

Oh, I see – I guess I’m not sure what you mean by stable here.

switch puts you in the new generation immediately (which can occasionally cause some weirdness) while boot just makes it the default generation on the next reboot.

Yes and switch often caused issues which is why I only use it for very small changes after I just did an update (where a nix-shell might also just work)

Btw very funny how Guix is basically a 1:1 nix clone but in Libre






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