MRuby::GemBox.new do |conf|

conf.gem :core => "mruby-sprintf"
conf.gem :core => "mruby-print"

Dir.glob("#{root}/mrbgems/mruby-*/mrbgem.rake") do |x|
  g = File.basename File.dirname x
  conf.gem :core => g unless g =~ /^mruby-(print|sprintf|bin-debugger|test)$/
end

end