install_package "openssl-1.0.2u" "https://www.openssl.org/source/openssl-1.0.2u.tar.gz#ecd0c6ffb493dd06707d38b14bb4d8c2288bb7033735606569d8f90f89669d16" openssl --if needs_openssl_096_102
install_package "ruby-2.4.0-preview2" "https://cache.ruby-lang.org/pub/ruby/2.4/ruby-2.4.0-preview2.tar.bz2#2224c55b2d87b5c0f08d23a4618e870027dbc1cffbfb4a05efd19eac4ff4cf1d" warn_eol standard verify_openssl