Parrot formula

Parrot is a virtual machine designed to efficiently compile
and execute bytecode for dynamic languages. Parrot currently
hosts a variety of language implementations in various stages
of completion, including Tcl, Javascript, Ruby, Lua, Scheme,
PHP, Python, Perl 6, APL, and a .NET bytecode translator.

The parrot binary needs patching to find its library.

Formula/parrot.rb

@@ -0,0 +1,18 @@
+require 'brewkit'
+
+class Parrot <Formula
+  url 'ftp://ftp.parrot.org//pub/parrot/releases/devel/1.6.0/parrot-1.6.0.tar.gz'
+  homepage 'http://www.parrot.org/'
+  md5 '6fde2d91278a3990213c8671a0856e4a'
+
+  depends_on 'pcre'
+
+  def install
+    system "perl Configure.pl --prefix=#{prefix} --debugging=0 --without-opengl --cc=#{ENV['CC']}"
+    system "make install"
+
+    h = "#{HOMEBREW_PREFIX}/Cellar/parrot/1.6.0/bin/parrot"
+    l = %x{otool -L #{h}}[/\S*blib\/lib\S*/]
+    system "install_name_tool -change #{l} #{HOMEBREW_PREFIX}/lib/libparrot.dylib #{h}"
+  end
+end