require "formula" class Ruby19Dependency < Requirement fatal true satisfy do `ruby --version` =~ /ruby (\d\.\d).\d/ $1.to_f >= 1.9 end def message "Selecta requires Ruby 1.9 or better." end end class Selecta < Formula homepage "https://github.com/garybernhardt/selecta" url "https://github.com/garybernhardt/selecta/archive/v0.0.3.tar.gz" sha1 "0530f2145d5eb018ba9cf7108bd78d3e5bb03434" depends_on Ruby19Dependency def install bin.install "selecta" end test do system "#{bin}/selecta", "--version" end end