require 'formula' class RubyBuild < Formula homepage 'https://github.com/sstephenson/ruby-build' url 'https://github.com/sstephenson/ruby-build/tarball/v20130227' sha1 '5cdcc5552f2ffb11ea161c98250e4c6153202462' head 'https://github.com/sstephenson/ruby-build.git' def install ENV['PREFIX'] = prefix system "./install.sh" end end