rvm:
  - 1.8.7
  - 1.9.2
  - 1.9.3
  - ruby-head
  - ree
  - jruby
  - rbx-18mode
gemfile:
  - Gemfile
  - gemfiles/Gemfile.base-versions
matrix:
  exclude:
    # Nokogiri 1.3.3 is not compatible with Rubinius or JRuby
    - gemfile: gemfiles/Gemfile.base-versions
      rvm: rbx-18mode
    - gemfile: gemfiles/Gemfile.base-versions
      rvm: jruby
before_script:
  - sh -e /etc/init.d/xvfb start
  - export DISPLAY=:99.0
before_install:
  - 'git submodule update --init'