testKqueue (tests.fd_remote.RemoteFDTests) fails on Darwin

[fmoo]

It looks like kqueue fds are not duplicated on fork()...

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FAIL: testKqueue (tests.fd_remote.RemoteFDTests)
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Traceback (most recent call last):
  File "/Users/ruibalp/src/python-filedes/tests/fd_remote.py", line 52, in testKqueue
    self.checkSubprocessFDs([fd], close=False)
  File "/Users/ruibalp/src/python-filedes/tests/fd_remote.py", line 70, in checkSubprocessFDs
    self.assertIn(fd, remote_fds)
AssertionError: <local fifo file #3> not found in [0, 1, 2]

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Ran 20 tests in 0.043s