{ self
, nixpkgs-unstable
, nixpkgs
, sops-nix
, inputs
, nixos-hardware
, home-manager
, home-manager-stable
, simple-nixos-mailserver
, ...
}:
let
  nixosSystem = nixpkgs.lib.makeOverridable nixpkgs-unstable.lib.nixosSystem;
  nixosSystemUnstable = nixpkgs-unstable.lib.makeOverridable nixpkgs-unstable.lib.nixosSystem;

  baseModules = [
    # make flake inputs accessiable in NixOS
    { _module.args.inputs = inputs; }
    {
      imports = [
        ({ pkgs, ... }: {
          nix.extraOptions = ''
            experimental-features = nix-command flakes
          '';
        })

        sops-nix.nixosModules.sops
      ];
    }
  ];
  defaultModules = baseModules;
in
{
  moderatio = nixosSystem {
    system = "x86_64-linux";
    specialArgs.inputs = inputs;
    modules = defaultModules ++ [
      #nixos-hardware.nixosModules.lenovo-thinkpad-t480s
      ./moderatio/configuration.nix
    ];
  };
}