Merged in develop (pull request #35)

Fix mercurial hook, issue #88

flake8/hooks.py

@@ -3,6 +3,12 @@ from __future__ import with_statement
 import os
 import sys
 from subprocess import Popen, PIPE
+try:
+    # The 'demandimport' breaks pyflakes and flake8._pyflakes
+    from mercurial import demandimport
+    demandimport.disable()
+except ImportError:
+    pass
 try:
     from configparser import ConfigParser
 except ImportError:   # Python 2