1) Install Ruby 1.9.2 and RubyGems version 1.3.6+ from www.ruby-lang.org/en/downloads/ 2) Install the latest bundler gem gem install bundler rake 3) Setup host headers for en.m.wikitest.org, *.m.wikitest.org for any language that you want to test. Anything works, but it needs to start with a language code. Point each one at 127.0.0.1 assuming you don’t have some sort of freaky setup. For instance…