anchor.diff:  # Filters
   , libsamplerate
   # Outputs
  -, alsa-lib, libjack2, libpulseaudio, libshout
  +, alsa-lib, libjack2, libpulseaudio, libshout, pipewire
   # Misc
   , icu, sqlite, avahi, dbus, pcre, libgcrypt, expat
   # Services
  
positive.code:     # Output plugins
      alsa          = [ alsa-lib ];
      jack          = [ libjack2 ];
      pulse         = [ libpulseaudio ];
      shout         = [ libshout ];
      # Commercial services
  
negative.code: 
      in stdenv.mkDerivation rec {
        pname = "mpd";
        version = "0.23.2";
  
        src = fetchFromGitHub {
          owner  = "MusicPlayerDaemon";
          repo   = "MPD";
          rev    = "v${version}";
          sha256 = "sha256-gn06t8S0hh5xe5V1vnXVHSb0FwxY40onUV+Bt7oL9ic=";
        };
  
        buildInputs = [
          glib
          boost
          fmt
          # According to the configurePhase of meson, gtest is considered a
          # runtime dependency. Quoting:
          #
  