require_gcc
install_package "yaml-0.1.4" "http://pyyaml.org/download/libyaml/yaml-0.1.4.tar.gz#36c852831d02cf90508c29852361d01b"
install_package "ruby-1.9.1-p430" "http://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.1-p430.tar.gz#093d17e911b1f7306de95422ec332826"
install_package "rubygems-1.3.7" "http://production.cf.rubygems.org/rubygems/rubygems-1.3.7.tgz#e85cfadd025ff6ab689375adbf344bbe" ruby