Custom update command

[viperML]

I'm not a fan of implementing nixos-rebuild --upgrade for non-flake setups as nix-chanel --update, as I don't use flakes neither channels, but rather npins.

Perhaps it would be useful to have a generic update command provided by an env variable or a flag:

$ export NH_UPDATE_CMD="cd $DOTFILES; npins update"

$ nh os switch --update

Shouldn't be too hard to implement. NH_UPDATE_CMD should be a bash script.

[cramt]

maybe crazy idea, we could kinda auto-detect which things we need to update.

like if the folder has a flake.nix, update that, if there is an npins folder, run npins update, there is probably also alternatives to npins we can look at

[viperML]

@cramt that's also a good idea, but the devil is in the details. For my dotfiles I don't see if it would work, as I use NH_FILE=/.../dotfiles/hosts/blah/default.nix, while my npins dir is at /.../dotfiles/npins.

Though in that case perhaps you could inspect (git repo root)/npins.

[cramt]

yeah, or just look at the entire parent tree for a npins/sources.json.

i personally use flakes and nvfetcher though im planning on switching out nvfetcher for npins soon as nvfetcher is unmaintained.

i currently have a Justfile to both run the nvfetcher update and the nix flake update, so having nh have a "just works" behaviour would be really nice