how do i use the git version on nixos?

[sacsbrainz]

I am using NixOS, just wondering how I can use the latest commit, which is on git in my NixOS, without waiting for release on Nixpkgs

[holderman1206]

You can override the src attribute like this.

boot.extraModulePackages = [
  (config.boot.kernelPackages.msi-ec.overrideAttrs {
    src = pkgs.fetchFromGitHub {
      owner = "BeardOverflow";
      repo = "msi-ec";
      rev = "205300b0aa351c2856a0f83cc3868249756d8c8d";
      hash = "sha256-Z7uZHHyQIIFB8cPuMR026U+sJuvhug0Mz4vtGno63oc=";
    };
  })
];
boot.kernelModules = [ "msi-ec" ];

Update rev and hash if needed.