Ruby on Rails

I'm curious if it's possible to build a Rails app that can accomplish the following:

Environment stipulations

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* Must run on the JVM so JRuby.

* The app will not have internet access in production. (We still have build servers that can package gems)

Ideal functionality

 

* The main Rails app should be able to support a variable amount of engines.

    * I have played with this and it can be done by tweaking the Gemfile to load the engines.

    * Downside is we now have to disregard the Gemfile.lock to accommodate additional engines being added at any time.

* Engines should be drop-in ready.

    * The engines should come packaged with all the gems they need to run.

* There should be no additional installing steps after dropping in an engine.

    * That means no 'bundle install' or anything else.

So my major concern at the moment is with the gems. When I drop in an engine and restart the server is there a way bundler can pick up the packaged gems within the engine without any install step? Maybe playing with the GEM_PATH or something? Anyway I would like to hear your opinions and see if we can figure something out. Thanks for checking this out!