ruby-build/_service

<services>
  <service name="download_url">
    <param name="protocol">https</param>
    <param name="host">github.com</param>
    <param name="path">rbenv/ruby-build/archive/v20170112.tar.gz</param>
  </service>
  <service name="verify_file">
    <param name="file">_service:download_url:v20170112.tar.gz</param>
    <param name="verifier">sha256</param>
    <param name="checksum">456979b820644b944e030598953dd735e4721365a8385f451ddc6ace90a2cab2</param>
  </service>
</services>