anchor.diff:  
       mesonFlags = [
         "-Ddocs=enabled"
  -      "-Dexamples=${mesonEnable withMediaSession}" # only needed for `pipewire-media-session`
         "-Dudevrulesdir=lib/udev/rules.d"
         "-Dinstalled_tests=enabled"
         "-Dinstalled_test_prefix=${placeholder "installedTests"}"
  
positive.code: , vulkan-loader
  , webrtc-audio-processing
  , ncurses
  , makeFontsConf
  , callPackage
  , nixosTests
  
negative.code: 
    self = stdenv.mkDerivation rec {
      pname = "pipewire";
      version = "0.3.38";
  
      outputs = [
        "out"
  