nichts/modules/services/mpd.nix

{
  config,
  lib,
  pkgs,
  ...
}: let
  cfg = config.modules.services.media.mpd;
  inherit (config.meta.mainUser) username;
  inherit (lib.modules) mkIf;
  inherit (lib.types) str;
  inherit (lib.options) mkOption mkEnableOption;
in {
  options.modules.services = {
    media = {
      mpd = {
        enable = mkEnableOption "mpd service";
        musicDirectory = mkOption {
          description = "music directory for mpd";
          type = str;
          default = "/home/${username}/cloud/media/Music";
        };
      };
    };
  };
  config = mkIf cfg.enable {
    # command line interface to mpd
    environment.systemPackages = [pkgs.mpc];

    systemd.services.mpd.environment = {
      # https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/609
      XDG_RUNTIME_DIR = "/run/user/1000";
    };
    services.mpd = {
      enable = true;
      inherit (cfg) musicDirectory;
      user = username;
      startWhenNeeded = true;
      extraConfig = ''
        restore_paused "yes"
        auto_update "yes"

          audio_output {
              type "pipewire"
              name "PipeWire Sound Server"
          }

           audio_output {
              type   "fifo"
              name   "FIFO"
              path   "/tmp/mpd.fifo"
              format "44100:16:2"
          }
      '';
    };
  };
}