install_package "openssl-1.0.2l" "https://www.openssl.org/source/openssl-1.0.2m.tar.gz#8c6ff15ec6b319b50788f42c7abc2890c08ba5a1cdcd3810eb9092deada37b0f" mac_openssl --if has_broken_mac_openssl
install_package "ruby-2.4.0-preview2" "https://cache.ruby-lang.org/pub/ruby/2.4/ruby-2.4.0-preview2.tar.bz2#2224c55b2d87b5c0f08d23a4618e870027dbc1cffbfb4a05efd19eac4ff4cf1d" ldflags_dirs standard verify_openssl