{ pkgs, ... }:
with pkgs;
let
  # A script that runs as long as media is playing.
  isMediaPlaying = writeShellApplication {
    name = "isMediaPlaying";
    runtimeInputs = [
      playerctl
    ];
    text = ''
      set -e

      while [ "$(playerctl status)" = "Playing" ]; do
        echo -n "."
        sleep 1
      done
    '';
  };
  # A script that prevents the system from going to sleep while media is playing
  mediaCaffeine = writeShellApplication {
    name = "media-caffeine";
    runtimeInputs = [
      isMediaPlaying
      systemd
    ];
    text = ''
      set -e

      systemd-inhibit --what=sleep --why="Media is playing" --mode=block isMediaPlaying
    '';
  };
in
{
  home.packages = with pkgs; [
    pulseaudio # for pactl and other tools
    pavucontrol # GUI volume control with lots of options

    mediaCaffeine
  ];

}