title: py2app worked with Homebrew, now it builds w/ module missing
body: <p>I have a new MacBook w/ Yosemite. In an attempt to get OSC, Zeroconf, PySide and Kivy working, I installed too much via Homebrew.  I've successfully (?) undone most of the damage, I think, and have installed all the Python modules so that Apple's Python finds everything... from the terminal window.</p>
  
  <p>However, now my code runs from the console, correctly importing a custom pythonosc module installed with "sudo python setup.py install", but when I package it with py2app it can no longer find pythonosc. (It found it previously with Python et al installed a la Homebrew.)</p>