title: "OSError: dlopen(libSystem.dylib, 6): image not found" (OS X + macports + Celery 3.1.7)
body: <p>I just updated celery via pip (1.5) to the latest version (3.1.7), but I get a fatal exception which I don't understand as soon I try to import the library. By running:</p>
  
  <p><code>from celery import Celery</code> in the shell I get:</p>
  
  <pre><code>File "&lt;console&gt;", line 1, in &lt;module&gt;
    File "/Users/davidezanotti/CygoraPythonEnv/lib/python2.7/site-packages/celery/__init__.py", line 130, in &lt;module&gt;
      from .five import recreate_module
    File "/Users/davidezanotti/CygoraPythonEnv/lib/python2.7/site-packages/celery/five.py", line 51, in &lt;module&gt;
      from kombu.five import monotonic
    File "/Users/davidezanotti/CygoraPythonEnv/lib/python2.7/site-packages/kombu/five.py", line 47, in &lt;module&gt;
      libSystem = ctypes.CDLL('libSystem.dylib')
    File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ctypes/__init__.py", line 365, in __init__
      self._handle = _dlopen(self._name, mode)
  OSError: dlopen(libSystem.dylib, 6): image not found
  </code></pre>
  
  <p>I'm using python 2.7.6 with VirtualEnv and macports on OS X 10.8.5</p>
  
  <p>I understand that the problem is that an underlying dependency ("libSystem.dylib") is missing, but I don't know how to fix this issue</p>
  
  <p>(under /usr/lib/ I can find libSystem.dylib on my machine)</p>