anchor.diff:  
     webstorm = buildWebStorm rec {
       name = "webstorm-${version}";
  -    version = "2021.2.1"; /* updated by script */
  +    version = "2021.2.2"; /* updated by script */
       description = "Professional IDE for Web and JavaScript development";
       license = lib.licenses.unfree;
       src = fetchurl {
         url = "https://download.jetbrains.com/webstorm/WebStorm-${version}.tar.gz";
  -      sha256 = "12i9f5sw02gcgviflfs6gwmnxvzhgmm4v4447am0syl4nq8nyv1s"; /* updated by script */
  +      sha256 = "1a3vlqza9nbc4a2qxrzdckmq003zx1db9dy7wx462amc8sbh6v92"; /* updated by script */
       };
       wmClass = "jetbrains-webstorm";
       update-channel = "WebStorm RELEASE";
  
positive.code: 
    idea-ultimate = buildIdea rec {
      name = "idea-ultimate-${version}";
      version = "2021.2.1"; /* updated by script */
      description = "Integrated Development Environment (IDE) by Jetbrains, requires paid license";
      license = lib.licenses.unfree;
      src = fetchurl {
        url = "https://download.jetbrains.com/idea/ideaIU-${version}-no-jbr.tar.gz";
        sha256 = "1257a9d9h3ybdsnm74jmgzp1rfi1629gv9kr0w2nhmxj7ghhbx4w"; /* updated by script */
      };
      wmClass = "jetbrains-idea";
      update-channel = "IntelliJ IDEA RELEASE";
  
negative.code: 
    clion = buildClion rec {
      name = "clion-${version}";
      version = "2021.2.3"; /* updated by script */
      description  = "C/C++ IDE. New. Intelligent. Cross-platform";
      license = lib.licenses.unfree;
      src = fetchurl {
        url = "https://download.jetbrains.com/cpp/CLion-${version}.tar.gz";
        sha256 = "09qbzkxyk435s4n04s12ncjyri024wj9pwz8wgjjsswpfa69dhr5"; /* updated by script */
      };
      wmClass = "jetbrains-clion";
      update-channel = "CLion RELEASE"; # channel's id as in http://www.jetbrains.com/updates/updates.xml
  