require 'formula' class RubyBuild < Formula homepage 'https://github.com/sstephenson/ruby-build' url 'https://github.com/sstephenson/ruby-build/tarball/v20120524' md5 '76999983d3d21b78306ce0fa863f1f32' head 'https://github.com/sstephenson/ruby-build.git' def install ENV['PREFIX'] = prefix system "./install.sh" end end