install_package "jruby-1.7.9" "https://s3.amazonaws.com/jruby.org/downloads/1.7.9/jruby-bin-1.7.9.tar.gz#c7acd09c932941f04e231d43f47606eb2b6a2d6898ae3dc97dd432dcf1501824" warn_eol jruby