{
  description = "Declaratively update your data.";
  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
  outputs = { nixpkgs, ... }: let
    system = "x86_64-linux";
    pkgs = import nixpkgs { inherit system; };
    package = pkgs.stdenv.mkDerivation rec {
      pname = "fooud";
      version = "1.0";

      src = ./.;
      deps = pkgs.callPackage ./build.zig.zon.nix {};
      nativeBuildInputs = [ pkgs.zig.hook pkgs.libgit2 pkgs.gpgme ];
      zigBuildFlags = [ "--system" "${deps}" ];
    };
    in {
    lib = builtins.import ./lib.nix { pkgs = nixpkgs; };
    nixosModules = rec {
      fooud = { pkgs, lib, config, inputs, ... }: {
        options.programs.fooud.enable = lib.mkEnableOption ("fooud")
          // { default = true; };
        config = lib.mkIf config.programs.fooud.enable {
          environment.systemPackages = [ pkgs.libgit2 pkgs.gpgme package ];
        };
      };
      default = fooud;
    };

    # just x86 for now
    packages.${system}.default = package;
  };
}