title: Rails Full Engine using a Full Engine
body: <p>I've got this full rails engine Foo with functionality X.</p>
  
  <p>I want to make another engine, engine Bar, that is pretty much the same, but override funcitonality x with y.
  (it basically does the same, but a few controller actions and views are differently implemented).</p>
  
  <p>(I might split this later in several mountable engines, but for now, this will be the setup:
  project Baz, using engine Bar, which uses engine Foo)</p>
  
  <p>I would like to know if there are any pitfalls. It doesn't seem like a pattern that is often used?
  Anybody else using this 'some sort of engine inheritance'?</p>