anchor.diff:  
     ruby-mine = buildRubyMine rec {
       name = "ruby-mine-${version}";
  -    version = "2021.2.1"; /* updated by script */
  +    version = "2021.2.3"; /* updated by script */
       description = "The Most Intelligent Ruby and Rails IDE";
       license = lib.licenses.unfree;
       src = fetchurl {
         url = "https://download.jetbrains.com/ruby/RubyMine-${version}.tar.gz";
  -      sha256 = "09blnm6han2rmdvjbr1va081zndzvjr1i0m3njaiwcb9rf2axm32"; /* updated by script */
  +      sha256 = "0bbq5ya1dxrgaqqqsc4in4rgv7v292hww3bb0vpzwz6dmc2jly1i"; /* updated by script */
       };
       wmClass = "jetbrains-rubymine";
       update-channel = "RubyMine RELEASE";
  
positive.code: 
    clion = buildClion rec {
      name = "clion-${version}";
      version = "2021.2.1"; /* updated by script */
      description  = "C/C++ IDE. New. Intelligent. Cross-platform";
      license = lib.licenses.unfree;
      src = fetchurl {
        url = "https://download.jetbrains.com/cpp/CLion-${version}.tar.gz";
        sha256 = "0knl0ca15cj0nggyfhd7s0szxr2vp7xvvp3nna3mplssfn59zf9d"; /* updated by script */
      };
      wmClass = "jetbrains-clion";
      update-channel = "CLion RELEASE"; # channel's id as in http://www.jetbrains.com/updates/updates.xml
  
negative.code: 
    idea-ultimate = buildIdea rec {
      name = "idea-ultimate-${version}";
      version = "2021.2.3"; /* updated by script */
      description = "Integrated Development Environment (IDE) by Jetbrains, requires paid license";
      license = lib.licenses.unfree;
      src = fetchurl {
        url = "https://download.jetbrains.com/idea/ideaIU-${version}-no-jbr.tar.gz";
        sha256 = "1d0kk2yydrbzvdy6dy9jqr182panidmbf2hy80gvi5ph2r5rv1qd"; /* updated by script */
      };
      wmClass = "jetbrains-idea";
      update-channel = "IntelliJ IDEA RELEASE";
  