install_package "jruby-1.7.7" "https://s3.amazonaws.com/jruby.org/downloads/1.7.7/jruby-bin-1.7.7.tar.gz#907b24578604c3eded40b84a6380b7c64ab76a6b76b31cf343afdde8dbfeffd4" warn_eol jruby