anchor.diff:      owner = "gcp";
       repo = "leela-zero";
       rev = "v${version}";
  -    sha256 = "1k04ld1ysabxb8ivci3ji5by9vb3yvnflkf2fscs1x0bp7d6j101";
  +    sha256 = "sha256-AQRp2rkL9KCZdsJN6uz2Y+3kV4lyRLYjWn0p7UOjBMw=";
       fetchSubmodules = true;
     };
   
  
positive.code: { lib, stdenv, fetchFromGitHub, cmake, boost
  , opencl-headers, ocl-icd, qtbase , zlib }:
  
  stdenv.mkDerivation rec {
    pname = "leela-zero";
  
negative.code: 
    meta = with lib; {
      description = "Go engine modeled after AlphaGo Zero";
      homepage = "https://github.com/gcp/leela-zero";
      license = licenses.gpl3Plus;
      maintainers = [ maintainers.averelld maintainers.omnipotententity ];
      platforms = platforms.linux;
    };
  }
  