{
  description = "Flake for building the MacGregor House website";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
    utils.url = "github:numtide/flake-utils";
    mkElmDerivation.url = "github:jeslie0/mkElmDerivation";
  };

  outputs =
    {
      self,
      nixpkgs,
      utils,
      mkElmDerivation,
    }:
    utils.lib.eachDefaultSystem (
      system:
      let
        pkgs = import nixpkgs {
          overlays = [ mkElmDerivation.overlays.mkElmDerivation ];
          inherit system;
        };
      in
      {
        devShells.default =
          with pkgs;
          mkShell {
            buildInputs = [
              elmPackages.elm
              elmPackages.elm-test
              elmPackages.elm-format
            ];
          };

        packages = {
          default = pkgs.mkElmDerivation {
            name = "macgregor";
            src = ./.;
            elmJson = ./elm.json;
            nativeBuildInputs = [ pkgs.elmPackages.elm ];
            buildPhase = ''
              elm make src/Main.elm --output Main.js --optimize
            '';
            installPhase = ''
              mkdir $out
              cp Main.js $out
            '';
          };
        };

        formatter = nixpkgs.legacyPackages.${system}.nixfmt-rfc-style;
      }
    );
}