anchor.diff:  
     goland = buildGoland rec {
       name = "goland-${version}";
  -    version = "2021.1.3"; /* updated by script */
  +    version = "2021.2"; /* updated by script */
       description = "Up and Coming Go IDE";
       license = lib.licenses.unfree;
       src = fetchurl {
         url = "https://download.jetbrains.com/go/${name}.tar.gz";
  -      sha256 = "0xy9k90v3kcm9sj48l809qn0vws4ygsxxyqwsg6y9a3r1raqgqxd"; /* updated by script */
  +      sha256 = "15pxr9w4gs342g9in7a41x0cpb7z68y28hwsamk9ic7yz2qshps8"; /* updated by script */
       };
       wmClass = "jetbrains-goland";
       update-channel = "GoLand RELEASE";
  
positive.code: 
    pycharm-professional = buildPycharm rec {
      name = "pycharm-professional-${version}";
      version = "2021.1.3"; /* updated by script */
      description = "PyCharm Professional Edition";
      license = lib.licenses.unfree;
      src = fetchurl {
        url = "https://download.jetbrains.com/python/${name}.tar.gz";
        sha256 = "01nwc9nprlyrwyij98px915w66g6vxbznsmmmg56rv3rvjvjp7yl"; /* updated by script */
      };
      wmClass = "jetbrains-pycharm";
      update-channel = "PyCharm RELEASE";
  
negative.code: 
    webstorm = buildWebStorm rec {
      name = "webstorm-${version}";
      version = "2021.2"; /* updated by script */
      description = "Professional IDE for Web and JavaScript development";
      license = lib.licenses.unfree;
      src = fetchurl {
        url = "https://download.jetbrains.com/webstorm/WebStorm-${version}.tar.gz";
        sha256 = "1whikk1izzvhq1d7kaf2kn4j4qpxn7aq70hlbxr1kb7zs4mzy9x3"; /* updated by script */
      };
      wmClass = "jetbrains-webstorm";
      update-channel = "WebStorm RELEASE";
  