freeze only a single gem?

I know this may be a silly question, but how do I freeze only the ruby-
debug and ruby-debug-base gems?

To my knowledge, the following command freezes only the Rails runtime,
correct?
rake rails:freeze:gems

I tried rake ruby-debug:freeze:gems and no luck.

Thanks!
Chirag

http://nubyonrails.com/articles/2005/12/22/freeze-other-gems-to-rails-lib-directory

Carpe viam,
Mike

Michael Larocque
Chief Cook and Bottle Washer
Prolumina Communications Inc.
http://prolumina.com/~mlarocque/

unpack it to the vendor directory via gem unpack