anchor.diff:  
     pycharm-professional = buildPycharm rec {
       name = "pycharm-professional-${version}";
  -    version = "2021.1"; /* updated by script */
  +    version = "2021.1.1"; /* updated by script */
       description = "PyCharm Professional Edition";
       license = lib.licenses.unfree;
       src = fetchurl {
         url = "https://download.jetbrains.com/python/${name}.tar.gz";
  -      sha256 = "1n3b4mdygzal7w88gwka5wh5jp09bh2zmm4n5rz9s7hr2srz71mz"; /* updated by script */
  +      sha256 = "0wc9j7nilakmm7scf7a71zb3k9vixgih05ni3n3pp4iznvwb3nxg"; /* updated by script */
       };
       wmClass = "jetbrains-pycharm";
       update-channel = "PyCharm RELEASE";
  
positive.code: 
    clion = buildClion rec {
      name = "clion-${version}";
      version = "2021.1"; /* updated by script */
      description  = "C/C++ IDE. New. Intelligent. Cross-platform";
      license = lib.licenses.unfree;
      src = fetchurl {
        url = "https://download.jetbrains.com/cpp/CLion-${version}.tar.gz";
        sha256 = "1qq2k14pf2qy93y1xchlv08vvx99zcml8bdcx3h6jnjz6d7gz0px"; /* updated by script */
      };
      wmClass = "jetbrains-clion";
      update-channel = "CLion RELEASE"; # channel's id as in http://www.jetbrains.com/updates/updates.xml
  
negative.code: 
    pycharm-community = buildPycharm rec {
      name = "pycharm-community-${version}";
      version = "2021.1.1"; /* updated by script */
      description = "PyCharm Community Edition";
      license = lib.licenses.asl20;
      src = fetchurl {
        url = "https://download.jetbrains.com/python/${name}.tar.gz";
        sha256 = "04bs9sz872b0h1zzax23irvj6q5wxnzp6fl4f177j94kh4116cqh"; /* updated by script */
      };
      wmClass = "jetbrains-pycharm-ce";
      update-channel = "PyCharm RELEASE";
  