anchor.diff:      vulkan-loader
     ];
   
  +  fixupPhase = ''
  +    wrapProgram $out/bin/xrgears \
  +      --prefix LD_LIBRARY_PATH : ${lib.makeLibraryPath [ SDL2 libGL ]}
  +  '';
  +
     meta = with lib; {
       homepage = "https://gitlab.freedesktop.org/monado/demos/xrgears";
       description = "An OpenXR example using Vulkan for rendering";
  
positive.code:     ninja
      pkg-config
      xxd
    ];
  
    buildInputs = [
  
negative.code: , vulkan-headers
  , vulkan-loader
  , xxd
  , SDL2
  , makeWrapper
  , libGL
  }:
  
  stdenv.mkDerivation rec {
  