{ user ? throw "user argument is required", gpu ? false }: { config, lib, pkgs, ... }:

let
  hmConfig = config.home-manager.users."${user.name}";
in
{
  home-manager.users."${user.name}" = {
    programs = {
      btop = {
        enable = true;
        settings = {
          color_theme = "matugen";
          theme_background = false;
          presets = "";
          vim_keys = true;
          shown_boxes = "cpu mem net proc gpu0 gpu1";
          update_ms = 1000;
          proc_tree = true;
          cpu_single_graph = true;
          disks_filter = "/ /nix /persist /cache";
        };
      };

      matugen.settings.templates.btop = {
        input_path = ./theme.theme;
        output_path = "${hmConfig.xdg.configHome}/btop/themes/matugen.theme";
      };
    };

    theme.extraConfig = "${lib.meta.getExe (pkgs.writeShellApplication {
      name = "reload-btop";
      runtimeInputs = with pkgs; [ procps ];
      text = ''
        pkill btop -SIGUSR2
      '';
    })} &";
  };
}