Patch conflicting, old version of `six`

gistfile1.py

import pyxb                                                                                                                                                                                                                              
                                                                                 
# pyxb bundles an old version of the 'six' package (1.5.1) that is not compatible with
# werkzeug 0.10's auto-reloader. It was fixed in six 1.5.2, and the latest       
# release is 1.9.0! We work around it by deleting the one problematic module     
# that is added (winreg is only available on Windows, Tk on Linux).              
import sys                                                                       
import copy                                                                      
del sys.modules['pyxb.utils.six.moves.winreg']                                   
for module in copy.copy(sys.modules):                                            
    if module.startswith('pyxb.utils.six.moves.tkinter'):                        
        del sys.modules[module]