ruby-simple-navigation 3.11.0-1build1 (powerpc binary) in ubuntu xenial

 Easily create multilevel navigations for your Rails, Sinatra or Padrino
 applications. The navigation is defined in a single configuration file. It
 supports automatic as well as explicit highlighting of the currently active
 navigation through regular expressions.
 .
 If you are implementing a Sinatra or Padrino web application, you should
 consider also installing ruby-sinatra-simple-navigation.