anchor.diff:  
     meta = with lib; {
       description = "Go engine modeled after AlphaGo Zero";
  -    homepage    = "https://github.com/gcp/leela-zero";
  -    license     = licenses.gpl3;
  +    homepage = "https://github.com/gcp/leela-zero";
  +    license = licenses.gpl3Plus;
       maintainers = [ maintainers.averelld maintainers.omnipotententity ];
  -    platforms   = platforms.linux;
  +    platforms = platforms.linux;
     };
   }
  
positive.code: { lib, stdenv, fetchFromGitHub, cmake, boost
  , opencl-headers, ocl-icd, qtbase , zlib }:
  
  stdenv.mkDerivation rec {
    pname = "leela-zero";
  
negative.code:     owner = "gcp";
      repo = "leela-zero";
      rev = "v${version}";
      sha256 = "sha256-AQRp2rkL9KCZdsJN6uz2Y+3kV4lyRLYjWn0p7UOjBMw=";
      fetchSubmodules = true;
    };
  
  