require 'formula' class ChibiScheme < Formula url 'http://chibi-scheme.googlecode.com/files/chibi-scheme-0.3.tgz' homepage 'http://code.google.com/p/chibi-scheme/' md5 '60a18f1b61c4677a2bb4701a0258c7d9' def install system "make install PREFIX=#{prefix}" end end