{
  config,
  lib,
  pkgs,
  ...
}:

{
  imports = [ ];

  options.me = {
    bluetooth.enable = lib.mkOption {
      type = lib.types.bool;
      default = false;
      example = true;
      description = "Whether we want to install bluetooth.";
    };
  };

  config = lib.mkIf config.me.bluetooth.enable (
    lib.mkMerge [
      {
        environment.systemPackages = with pkgs; [
        ];

        hardware.bluetooth = {
          enable = true;
          powerOnBoot = true;
          settings = {
            General = {
              # Enable support for showing battery charge level.
              Experimental = true;
            };
          };
        };

        environment.persistence."/persist" = lib.mkIf (!config.me.buildingIso) {
          hideMounts = true;
          directories = [
            "/var/lib/bluetooth" # Bluetooth pairing information.
          ];
        };
      }
    ]
  );
}