You've got break a few eggs
... to easily grep your packages
My favourite buildout recipe of the week is David Glick's collective.recipe.omelette. This symlinks all your eggs together in a single directory structure so that it's easy to browse and grep the source code that's being used by Zope. The resulting directory structure isn't actually used at runtime (unless you choose to do something clever with it), but it's a very useful development tool.
Here's how I use it in a standard Plone 3 buildout:
[buildout]
parts =
...
omelette
...
[omelette]
recipe = collective.recipe.omelette
eggs = ${instance:eggs}
After re-running ./bin/buildout, you should see a bunch of symlinks in parts/omelette in the buildout. Pretty cool!
No reports yet on whether this works on Windows. If anyone can test, please let us know!

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And there was much rejoicing