[Distutils] develop egg recipe?

I'm using zc.buildout for a project that also utilizes a custom egg-info writer. I specify the egg-info writer package as a setup_requires package in setup.py. Of course, that doesn't trigger zc.buildout (er, setuptools) to install that egg when I run buildout. I could work around this by specifying two parts in buildout.cfg: first install the egg for my egg-info writer, then create a development egg for my project (which uses the egg-info writer). I'm curious if there's a way with the current recipe set to create a develop egg within a part, as opposed to just specifying "develop = ." in the [buildout] section. Thanks, Nathan