{
  inputs.nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
  outputs =
    inputs:
    let
      systems = [
        "x86_64-linux"
        "aarch64-linux"
      ];
      inherit (builtins) map listToAttrs;
      forAllSystems =
        f:
        listToAttrs (
          map (system: {
            name = system;
            value = f system;
          }) systems
        );
    in
    {
      packages = forAllSystems (
        system:
        let
          pkgs = inputs.nixpkgs.legacyPackages.${system};
        in
        {
          default = pkgs.callPackage ./nix/package.nix { };
        }
      );
      nixosModules.default = import ./nix/modules/nixos.nix;
    };
}