anchor.diff:  { stdenv
   , fetchFromGitLab
  -, fetchpatch
   , meson
   , ninja
   , pkgconfig
  
positive.code: in
  stdenv.mkDerivation rec {
    pname = "pipewire";
    version = "0.3.2";
  
    outputs = [ "out" "lib" "dev" "doc" ];
  
  
negative.code:     vulkan-loader
      xorg.libX11
    ];
  
    mesonFlags = [
      "-Ddocs=true"
  