{
  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
  inputs.newalan.url = "../";

  outputs = { self, nixpkgs, newalan }: let
    new_alan_overlay = (final: prev: {
      new_alan = newalan.packages."x86_64-linux".default;
    });
  in {
    nixosConfigurations."staging" = nixpkgs.lib.nixosSystem {
      system = "x86_64-linux";
      modules = [
        ../secrets/config.nix
        ({ config, pkgs, ... }: {
          nixpkgs.overlays = [
            new_alan_overlay
          ];
        })
        ({lib, config, pkgs, ...}: {
          systemd.services.alan = {
            wantedBy = ["networking-online.target"];
            enable = true;
            path = [
              pkgs.new_alan
              pkgs.ffmpeg_5-headless
            ];
            environment = {
              DING_SOUND = "${pkgs.new_alan}/share/sounds/ding.mp3";
            };
            script = ''
              ${pkgs.new_alan}/bin/new_alan
            '';
          };
        })
      ];
    };
  };
}