install_package "openssl-1.0.2l" "https://www.openssl.org/source/openssl-1.0.2l.tar.gz#ce07195b659e75f4e1db43552860070061f156a98bb37b672b101ba6e3ddf30c" mac_openssl --if has_broken_mac_openssl
install_package "ruby-2.4.0-rc1" "https://cache.ruby-lang.org/pub/ruby/2.4/ruby-2.4.0-rc1.tar.bz2#3b156b20f9df0dd62cbeeb8e57e66ea872d2a5b55fabdef1889650122bcc2ea7" ldflags_dirs standard verify_openssl