require 'formula' class ChibiScheme < Formula homepage 'http://code.google.com/p/chibi-scheme/' url 'https://chibi-scheme.googlecode.com/files/chibi-scheme-0.6.1.tgz' sha1 '8cf1d35aaceaebc1b305e4ee3b872f3ce014106a' head 'https://code.google.com/p/chibi-scheme/', :using => :hg def install ENV.deparallelize # "make" and "make install" must be done separately system "make" system "make", "install", "PREFIX=#{prefix}" end end