{ lib, pkgs, config, ...}: let
  inherit (lib) mkIf mkEnableOption mkOption;
  cfg = config.chuj.stuff.timer;
  user = config.chuj.system.user;
in {
  options.chuj.stuff.timer = {
    enable = mkEnableOption "timer";
  };
  config = mkIf cfg.enable {
    environment.systemPackages = let
      timer = (pkgs.stdenv.mkDerivation {
        name = "timer";
        src = pkgs.fetchFromGitea {
          domain = "codeberg.org";
          owner = "krizej";
          repo = "bins";
          rev = "1f45e92ea4c700dd220ce11ecad8d56268ea08ce";
          hash = "sha256-5MnE4n1bCt2DPTejCcwVozIa7ITUdekryETELOL0gxE=";
        };
        buildPhase = ''
          mkdir -p $out/bin/
          cc timer.c -o $out/bin/timer
        '';
      });
    in [
      (pkgs.writeShellScriptBin "timer" ''
        ${lib.getExe pkgs.alacritty} -o "font.size=32" --class TerminalTimer --title timer --command "${timer}/bin/timer"
      '')
    ];
    home-manager.users.${user}.xsession.windowManager.i3.config = mkIf config.chuj.stuff.i3.enable {
      window.commands = [{
        criteria.class = "TerminalTimer";
        # epic hardcoding!
        command = "resize set 215 55";
      }];
      floating.criteria = [{ class = "TerminalTimer"; }];
    };
  };
}