Pins: Permanent Nix Binary Storage

[domenkozar]

https://blog.cachix.org/posts/2023-05-23-introducing-pins-permanent-nix-binary-storage/

[NobbZ]

Reads like a nice feature! Is this already exposed in the cachix action?

[imincik]

Really good feature. Thank you very much Domen.

[domenkozar]

Yeah, Cachix 1.5 is already the latest release, which cachix-action installs.

[NobbZ]

I mean, can I specify a pin in the action?

[domenkozar]

You need to first build your flake (or nix file) and then you can pin it, so cachix-action can’t help with that.

We’re going to add more high level helpers for pinning, but we’d like to understand what workflow you want to follow.

[NobbZ]

@domenkozar

You need to first build your flake (or nix file) and then you can pin it, so cachix-action can’t help with that.

This was my question.

So for now I need a “custom step” running nix pin manually.

[Kranzes]

Something like this could work:
cachix pin kranzes $(nix eval --raw .#default.system)-$(nix eval --raw .#default.name) $(nix eval --raw .#default.outPath)

Which will create something like this: