{
  description = "Wedding site for Chris & Scotia 2023.";

  inputs = {
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs = inputs @ { self, nixpkgs, ... }:
    inputs.flake-utils.lib.eachDefaultSystem (system:
      let pkgs = nixpkgs.legacyPackages.${system};
          myWeddingSiteDir = "$MY_WEDDING_SITE_DIR";
          myWeddingSiteTgt = "ubuntu@chrishayward.xyz:/var/www/wedding";
          myWeddingSiteBuild = pkgs.writeShellScriptBin "my-wedding-site-build" ''
            pushd ${myWeddingSiteDir} > /dev/null &&
            ${pkgs.hugo}/bin/hugo -v ; \
            popd > /dev/null
          '';
          myWeddingSiteUpdate = pkgs.writeShellScriptBin "my-wedding-site-update" ''
            ${pkgs.rsync}/bin/rsync -aP ${myWeddingSiteDir}/public/ ${myWeddingSiteTgt}
          '';
      in
        rec {
          devShells.default = pkgs.mkShell {
            buildInputs = with pkgs; [
              myWeddingSiteBuild
              myWeddingSiteUpdate
            ];

            shellHook = ''
              export MY_WEDDING_SITE_DIR="$(pwd)"
            '';
          };
        }
    );
}