anchor.diff:    makeFlags = [ "prefix=$(out) bindir=$(out)/bin" ];
   
     postFixup = ''
  -    wrapProgram $out/bin/vkquake --prefix LD_LIBRARY_PATH : ${vulkan-loader}/lib
  +    wrapProgram $out/bin/vkquake \
  +      --prefix LD_LIBRARY_PATH : ${vulkan-loader}/lib
     '';
   
     enableParallelBuilding = true;
   
  -  meta = {
  +  meta = with stdenv.lib; {
       description = "Vulkan Quake port based on QuakeSpasm";
       homepage = src.meta.homepage;
       longDescription = ''
  
positive.code:       specialization constants, CPU/GPU parallelism and memory pooling.
      '';
  
      platforms = stdenv.lib.platforms.linux;
      maintainers = [ stdenv.lib.maintainers.gnidorah ];
    };
  }
  
negative.code: { stdenv, fetchpatch, fetchFromGitHub, makeWrapper, SDL2, gzip, libvorbis, libmad, vulkan-headers, vulkan-loader }:
  
  stdenv.mkDerivation rec {
    pname = "vkquake";
  