[Distutils] [zc.buildout] confusion from "work on a package" section

[Chris Withers]

Reading:

http://pypi.python.org/pypi/zc.buildout/1.0.6#work-on-a-package

...again.

Can someone walk me through like the idiot I feel right now why having 
"develop = ." results in src/zc/ngi/ ending up on the python path?

cheers,

Chris

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