anchor.diff:        owner = pname;
         repo = pname;
         rev = "Release_${versionTag}";
  -      sha256 = "1ycbjia223d0w9xiwk36x2vkdidsx198rzkfyxz48cbax9vvklzq";
  +      sha256 = "sha256-YZq1JKDlCQVvjv7+XpEhD/wfFcQ5m3i5VO4rNQ3ONRQ=";
       };
   
     unpackPhase = ''
  
positive.code:     "-DEIGEN3_INCLUDE_DIR=${eigen}/include/eigen3"
      "-DRDK_INSTALL_INTREE=OFF"
      "-DRDK_INSTALL_STATIC_LIBS=OFF"
      "-DRDK_BUILD_INCHI_SUPPORT=ON"
      "-DRDK_BUILD_AVALON_SUPPORT=ON"
      "-DRDK_BUILD_FREESASA_SUPPORT=ON"
  
negative.code:     yaehmop = fetchFromGitHub {
        owner = "greglandrum";
        repo = "yaehmop";
        rev = "cfb5aeebbdf5ae93c4f4eeb14c7a507dea54ae9e";
        sha256 = "sha256-QMnc5RyHlY3giw9QmrkGntiA+Srs7OhCIKs9GGo5DfQ=";
      };
      freesasa = fetchFromGitHub {
        owner = "mittinatten";
        repo = "freesasa";
        rev = "2.1.1";
        sha256 = "sha256-fUJvLDTVhpBWl9MavZwp0kAO5Df1QuHEKqe20CXNfcg=";
      };
    };
  in
  buildPythonPackage rec {
    pname = "rdkit";
    version = "2022.03.3";
  
    src =
      let
  