I learned how to do a really cursed thing today: edit /nix/store paths

sudo unshare --mount bash -c 'mount -your /nix to /nix'

My goal wasn't to edit storepaths but to hardlink to the store, which requires being on the same mount point (which /nix/store isn't because it's RO bind-mounted over itself)

I learned how to do a really cursed thing today: edit /nix/store paths

sudo unshare --mount bash -c 'mount -your /nix to /nix && touch /nix/store/something-cursed'

My goal wasn't to edit storepaths but to hardlink to the store, which requires being on the same mount point (which /nix/store isn't because it's RO bind-mounted over itself)

I learned how to do a really cursed thing today: edit /nix/store paths

sudo unshare --mount bash -c 'mount -your /nix to /nix && touch /nix/store/something-cursed'

My goal wasn't to edit storepaths but to hardlink to the store, which requires being on the same mount point (which /nix/store isn't because it's RO bind-mounted over itself)

unshare --mount creates your own mount namespace (ish) where you get a clone of what is already, but you can mount over things without disrupting any other processes.

In reply to @lillecarl:matrix.org
https://github.com/water-sucks/optnix Haha sry i forgot to link the most essential thing! 😄

I was going to try this and saw that the maintainer (water-sucks) has integrated this tool along with other neat stuff in a unified nixos-cli. Its beta though and I got a strange error about mailserver.fqdn not being set, but apart from that it went fine and optnix is indeed very nice to use. Thanks for the tips 🤗

https://github.com/nix-community/nixos-cli