anchor.diff:      ++ lib.optional zeroconfSupport avahi
       ++ lib.optional raopSupport openssl
       ++ lib.optional rocSupport roc-toolkit
  -    ++ lib.optionals x11Support [ libcanberra xorg.libxcb ];
  +    ++ lib.optionals x11Support [ libcanberra xorg.libX11 xorg.libXfixes ];
   
       # Valgrind binary is required for running one optional test.
       checkInputs = lib.optional withValgrind valgrind;
  
positive.code:       owner = "pipewire";
        repo = "pipewire";
        rev = version;
        sha256 = "sha256-RLdA6McMQd70Pz672S8W9nQhzj1zymqXWLLDZKT6vtQ=";
      };
  
      patches = [
  
negative.code: 
    self = stdenv.mkDerivation rec {
      pname = "pipewire";
      version = "0.3.48";
  
      outputs = [
        "out"
  