Also, it doesn't work:
error: access to absolute path '/home/user/.ssh/id_rsa' is forbidden in restricted mode
Maybe you don't know about restrict-eval? All the CI for nixpkgs is done using that option, so it will never break anything. Turning off restrict-eval is pretty crazy; there's no reason to do that and it's dangerous.https://nixos.org/manual/nix/unstable/command-ref/conf-file....
Hope this helps.
I don't think it did. I'm not sure what it was supposed to help with.