anchor.diff:  , fetchFromGitHub
   , fetchurl
   , lib
  +, mesa-headers
   , python3Packages
   }:
   
  
positive.code:         cd api/
        '';
  
        installPhase = ''
          for header in {EGL/egl{,ext,platform},KHR/khrplatform}.h; do
            install -D -m644 -v "$header" ${name}/include/"$header"
  
negative.code:   name = "egl-headers-${date}";
  
    src = fetchurl {
      name = "egl-registry-${date}.tar.xz";
      multihash = "QmcuqWrcyfZnyoEebWeBLyWtkptN29K8UQKdkxxEbZkDEG ";
      sha256 = "829d3a5fb6de4016310cbeeb5b1594b132a4477f41ca4bd74b5b6ea68b9acb8f";
    };
  
    configurePhase = ":";
  