{ system, inputs, config, lib, pkgs, impurity, ... }: let
  username = "admin";
  homeDirectory = "/home/${username}";
in {
  imports = [
    inputs.home-manager.nixosModules.home-manager

    ./general.nix
  ];

  options.main-user = lib.mkOption {
    type = lib.types.str;
    default = username;
  };

  config = {
    users.users.${username} = {
      isNormalUser = true;
      uid = 1000;
      extraGroups = [ "wheel" ];
      initialPassword = "test";
    };

    fonts = {
      enableDefaultFonts = false;

      fonts = with inputs.stable.legacyPackages.${system}; [
        dejavu_fonts
        nerdfonts
        noto-fonts
        noto-fonts-cjk
      ];
    };

    systemd = {
      # kde polkit agent
      user.services.polkit-agent = {
        wants = [ "graphical-session.target" ];
        after = [ "graphical-session.target" ];

        serviceConfig = {
          Type = "simple";
          ExecStart = "${pkgs.polkit-kde-agent}/libexec/polkit-kde-authentication-agent-1";
          Restart = "on-failure";
          RestartSec = 1;
          TimeoutStopSec = 10;
        };
      };
    };

    programs.gnupg.agent = {
      enable = true;
      pinentryFlavor = "gnome3";
    };

    environment.variables = {
      XCURSOR_SIZE = "24";
    };

    home-manager = {
      extraSpecialArgs = {
        inherit system inputs impurity;
      };

      # use system nixpkgs instead of home-manager nixpkgs
      useGlobalPkgs = true;

      users.${username} = {
        home = {
          inherit username homeDirectory;
          stateVersion = config.system.stateVersion;
        };

        # enable xdg dir management
        xdg.enable = true;

        xsession.preferStatusNotifierItems = true;
      };
    };
  };
}