Include packages in systemPackages? about easy-purescript-nix HOT 2 CLOSED

let
  easy-ps = import (pkgs.fetchFromGitHub {
    owner = "justinwoo";
    repo = "easy-purescript-nix";

    # at this git revision:
    rev = "340e82b";

    # this sha can be obtained by using
    # nix-prefetch-git https://github.com/justinwoo/easy-purescript-nix.git --rev 340e82b
    # (without --rev for latest master)
    sha256 = "1q2ciwd3193kig1paidzrgxl60y4rb39bsi97lk7m6ff8mis6z6i";
  });

    inherit pkgs;
  };```

fixed the issue.