{ lib, config, ... }:
let
  types = lib.types;
  sys = config.maid.sys;
in
{
  options.maid.sys = {
    enable = lib.mkEnableOption "whole maid system";
    tz = lib.mkOption {
      type = types.str;
      default = "Europe/Moscow";
    };
    hostname = lib.mkOption {
      type = types.str;
    };
  };

  config = lib.mkIf sys.enable {
    time.timeZone = sys.tz;
    networking.hostName = sys.hostname;
  };
}