[chef] chef_gem w/ native extensions under omnibus

[Wes Morgan < >]

How does one install chef_gem's with native extensions under omnibus? I'm 
guessing (on Ubuntu) that I need build-essential installed first, but 
obviously the chef_gem gets evaluated before the build-essential recipe.

Is there a way to setup a build environment before chef_gem's are installed 
in omnibus?

Wes