install_package "jruby-1.7.8" "https://s3.amazonaws.com/jruby.org/downloads/1.7.8/jruby-bin-1.7.8.tar.gz#034ff3b501605a1d8e740387a5eae193faa96f7d07088b6727d2bcf2892db84a" warn_eol jruby