Question about caching nix store in github action

[minizilla]

Hi @joneshf , I'm following issues regarding caching nix store in github action and saw your solutions. It works wonder and it speed up the CI time.

However I notice the different between using --store and not.

# when running the following command it also prints error(ignored)
$ nix --store ~/nix develop . --command echo "ok"
error (ignored): error: package 'nixpkgs#bashInteractive' does not provide a 'bin/bash'
ok

# works normally without specifying --store
$ nix develop . --command echo "ok"
ok

I saw your action logs in this repo, the error (ignored) line also appears, any thought on this? it doesn't hinder the flow of execution since the error is ignored but annoys me seeing word error when everything is fine.

[joneshf]

Howdy! I've been wondering about this myself. I don't have a clue why it does that, but thanks for asking the question upstream: NixOS/nix#8289. I'll leave this open until there's some resolution in the upstream issue.