anchor.diff:      python3
     ];
   
  -  PYSCF_INC_DIR="${libcint}:${libxc}";
  +  PYSCF_INC_DIR="${libcint}:${libxc}:${xcfun}";
   
     doCheck = false;
   
  
positive.code: 
  buildPythonPackage rec {
    pname = "pyscf";
    version = "1.7.6";
  
    src = fetchFromGitHub {
      owner = "pyscf";
      repo = pname;
      rev = "v${version}";
      sha256  = "1plicf3df732mcwzsinfbmlzwwi40sh2cxy621v7fny2hphh14dl";
    };
  
    buildInputs = [
  
negative.code:     homepage = https://pyscf.github.io/;
      license = licenses.asl20;
      platforms = platforms.linux;
      maintainers = [ maintainers.sheepforce ];
    };
  }
  