rails_root = Pathname.new(File.dirname(__FILE__)).join("..") Gem.sources.each { |uri| source uri } gem "activesupport", "3.0.pre", :vendored_at => rails_root.join("activesupport") gem "arel", :git => "git://github.com/rails/arel.git" only :test do gem "sqlite3-ruby" end disable_system_gems