{
  config,
  lib,
  pkgs,
  namespace,
  ...
}:
with lib;
let
  cfg = config.${namespace}.user;
in
{
  options.${namespace}.user = with types; {
    email = lib.mkOption { 
      type = str;
      default = "jalle008@proton.me";
      description = "The email of the user.";
    };
    extraGroups = lib.mkOption {
      type = (listOf str);
      default = [ ];
      description = "Groups for the user to be assigned.";
    };
    extraOptions = lib.mkOption {
      type = attrs;
      default = { };
      description = "Extra options passed to <option>users.users.<name></option>.";
    };
    fullName = lib.mkOption {
      type = str;
      default = "Matt Jallen";
      description = "The full name of the user.";
    };
    name = lib.mkOption {
      type = str;
      default = "matt";
      description = "The name to use for the user account.";
    };
  };

  config = {
    users.users.${cfg.name} = {
      inherit (cfg) name;

      extraGroups = [
        "wheel"
        "systemd-journal"
        "mpd"
        "audio"
        "video"
        "input"
        "plugdev"
        "lp"
        "tss"
        "power"
        "nix"
      ] ++ cfg.extraGroups;

      group = "users";
      home = "/home/${cfg.name}";
      isNormalUser = true;
      shell = lib.mkDefault pkgs.zsh;
      uid = 1000;
    } // cfg.extraOptions;
  };
}