Get Private git repo in nixos configuration

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1

How to get access to a private git repo in a nixos configuration (/etc/nixos/configuration.nix) ?
Thanks in advance for kind hearts…

2

fetchgit supports adding a .netrc file via impure env vars: https://github.com/NixOS/nixpkgs/blob/d7fbd8f0dce50bf6c2d630e8dcff59954044b582/pkgs/build-support/fetchgit/default.nix#L29

I haven’t used it in a while, something like this:

fetchgit {
  # Skipping the repo set up...
  netrcPhase = ''
    echo "machine $MACHINE login $LOGIN password $PASSWORD" > .netrc
  '';
  netrcImpureEnvVars = ["MACHINE", "LOGIN", "PASSWORD"];
}

Then you just set those env vars in the shell that runs your builder, ideally without exposing them to anything other than nix.

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