anchor.diff:  
     pycharm-professional = buildPycharm rec {
       name = "pycharm-professional-${version}";
  -    version = "2019.3.4"; /* updated by script */
  +    version = "2020.1"; /* updated by script */
       description = "PyCharm Professional Edition";
       license = stdenv.lib.licenses.unfree;
       src = fetchurl {
         url = "https://download.jetbrains.com/python/${name}.tar.gz";
  -      sha256 = "1hdwzkh6qzad2pqskqw9m8glj15x9d2g4csl0dxk6an82ps52naz"; /* updated by script */
  +      sha256 = "1swd2qfhsa6i1aq7z2s183d0hif2gmk1kkw9ns4aybny0wvvnqw2"; /* updated by script */
       };
       wmClass = "jetbrains-pycharm";
       update-channel = "PyCharm RELEASE";
  
positive.code: 
    idea-ultimate = buildIdea rec {
      name = "idea-ultimate-${version}";
      version = "2019.3.4"; /* updated by script */
      description = "Integrated Development Environment (IDE) by Jetbrains, requires paid license";
      license = stdenv.lib.licenses.unfree;
      src = fetchurl {
        url = "https://download.jetbrains.com/idea/ideaIU-${version}-no-jbr.tar.gz";
        sha256 = "1i34kcd2j1xwx3l2sqc6jh3b69wqbxwwlq5yb7kf2ms9x4144bn0"; /* updated by script */
      };
      wmClass = "jetbrains-idea";
      update-channel = "IntelliJ IDEA RELEASE";
  
negative.code: 
    ruby-mine = buildRubyMine rec {
      name = "ruby-mine-${version}";
      version = "2019.3.4"; /* updated by script */
      description = "The Most Intelligent Ruby and Rails IDE";
      license = stdenv.lib.licenses.unfree;
      src = fetchurl {
        url = "https://download.jetbrains.com/ruby/RubyMine-${version}.tar.gz";
        sha256 = "13lwrqrkg5vk0azqfhr67psgv1idvkxwjxly2xawr6cy5vnrcd8s"; /* updated by script */
      };
      wmClass = "jetbrains-rubymine";
      update-channel = "RubyMine RELEASE";
  