install rubinius 2.2.1

rubinius.rb

require 'formula'

class Rubinius < Formula
  homepage 'http://rubini.us/'
  url 'http://releases.rubini.us/rubinius-2.2.1.tar.bz2'
  sha1 'c34e5c19dcc66c35278ac4e5ec133798372c23ed'
  head 'https://github.com/rubinius/rubinius.git'

  # Yes, rubinius actually needs a pre-existing ruby 2.0 install to build
  depends_on 'ruby' => :build

  env :std

  def install
    system "bundle install --path vendor/gems"
    system "./configure",
           "--bindir", bin,
           "--prefix", prefix,
           "--includedir", "#{include}/rubinius",
           "--libdir", lib,
           "--mandir", man, # For completeness; no manpages exist yet.
           "--gemsdir", "#{lib}/rubinius/gems"

    ohai "config.rb", File.open('config.rb').to_a if ARGV.debug? or ARGV.verbose?

    system "rake", "install"

    # Remove conflicting command aliases
    bin.children.select(&:symlink?).each(&:unlink)
    # This conclicts with the Ruby command of the same name
    (bin/'testrb').unlink
  end

  test do
    assert_equal 'rbx', `"#{bin}/rbx" -e "puts RUBY_ENGINE"`.chomp
  end
end