{...}: {
  # PipeWire-based audio. wpctl (used by the Hyprland media keybinds) is provided
  # by wireplumber, which PipeWire enables by default.
  flake.nixosModules.audio = {pkgs, ...}: {
    environment.systemPackages = with pkgs; [
      playerctl # media keys (hypr keybinds)
      pavucontrol # GUI mixer (waybar pulseaudio on-click)
    ];

    # PipeWire replaces the PulseAudio server; don't run the standalone daemon.
    services.pulseaudio.enable = false;
    security.rtkit.enable = true;

    services.pipewire = {
      enable = true;
      alsa.enable = true;
      alsa.support32Bit = true;
      pulse.enable = true;
      jack.enable = true;
    };
  };
}