{
  description = "Website for dgnum.eu";

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

  outputs = { self, nixpkgs, flake-utils }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = nixpkgs.legacyPackages.${system};
        ssg = pkgs.callPackage ./ssg { };
        defaultInputs = with pkgs; [ nixfmt shellcheck ];
      in {
        formatter = pkgs.nixfmt;

        devShells = {
          default = pkgs.mkShell { buildInputs = [ ssg ] ++ defaultInputs; };

          ssg = pkgs.haskellPackages.shellFor {
            packages = _: [ ssg ];
            buildInputs = with pkgs.haskellPackages;
              [ cabal-install ghcid hlint ] ++ defaultInputs;
          };
        };

        packages = {
          inherit ssg;
          site = pkgs.callPackage ./site { inherit ssg; };
        };
        defaultPackage = self.packages.${system}.site;
      });
}