anchor.diff:  
     idea-ultimate = buildIdea rec {
       name = "idea-ultimate-${version}";
  -    version = "2016.3.2";
  +    version = "2016.3.3";
       description = "Integrated Development Environment (IDE) by Jetbrains, requires paid license";
       license = stdenv.lib.licenses.unfree;
       src = fetchurl {
         url = "https://download.jetbrains.com/idea/ideaIU-${version}.tar.gz";
  -      sha256 = "13pd95zad29c3i9qpwhjii601ixb4dgcld0kxk3liq4zmnv6wqxa";
  +      sha256 = "1bwy86rm0mifizmhkm9wxwc4nrrizk2zp4zl5ycxh6zdiad1r1wm";
       };
       wmClass = "jetbrains-idea";
     };
   
     ruby-mine = buildRubyMine rec {
       name = "ruby-mine-${version}";
  -    version = "2016.2.5";
  +    version = "2016.3.1";
       description = "The Most Intelligent Ruby and Rails IDE";
       license = stdenv.lib.licenses.unfree;
       src = fetchurl {
         url = "https://download.jetbrains.com/ruby/RubyMine-${version}.tar.gz";
  -      sha256 = "1rncnm5dvhpfb7l5p2k0hs4yqzp8n1c4rvz9vldlf5k7mvwggp7p";
  +      sha256 = "10d1ba6qpizhz4d7fz0ya565pdvkgcmsdgs7b8dv98s9hxfjsldy";
       };
       wmClass = "jetbrains-rubymine";
     };
  
positive.code: 
    pycharm-community = buildPycharm rec {
      name = "pycharm-community-${version}";
      version = "2016.3";
      description = "PyCharm Community Edition";
      license = stdenv.lib.licenses.asl20;
      src = fetchurl {
        url = "https://download.jetbrains.com/python/${name}.tar.gz";
        sha256 = "1pi822ihzy58jszdy7y2pyni6pki9ih8s9xdbwlbwg9vck1iqprs";
      };
      wmClass = "jetbrains-pycharm-ce";
    };
  
    pycharm-professional = buildPycharm rec {
      name = "pycharm-professional-${version}";
      version = "2016.3";
      description = "PyCharm Professional Edition";
      license = stdenv.lib.licenses.unfree;
      src = fetchurl {
        url = "https://download.jetbrains.com/python/${name}.tar.gz";
        sha256 = "1b4ib77wzg0y12si8zqrfwbhv4kvmy9nm5dsrdr3k7f89dqg3279";
      };
      wmClass = "jetbrains-pycharm";
    };
  
    phpstorm = buildPhpStorm rec {
      name = "phpstorm-${version}";
      version = "2016.3";
      description = "Professional IDE for Web and PHP developers";
      license = stdenv.lib.licenses.unfree;
      src = fetchurl {
        url = "https://download.jetbrains.com/webide/PhpStorm-${version}.tar.gz";
        sha256 = "0hzjhwij2x3b5fqwyd69h24ld13bpc2bf9wdcd1jy758waf0d91y";
      };
      wmClass = "jetbrains-phpstorm";
    };
  
negative.code: 
    idea-community = buildIdea rec {
      name = "idea-community-${version}";
      version = "2016.3.3";
      description = "Integrated Development Environment (IDE) by Jetbrains, community edition";
      license = stdenv.lib.licenses.asl20;
      src = fetchurl {
        url = "https://download.jetbrains.com/idea/ideaIC-${version}.tar.gz";
        sha256 = "1v9rzfj84fyz3m3b6bh45jns8wcil9n8f8mfha0x8m8534r6w368";
      };
      wmClass = "jetbrains-idea-ce";
    };
  