Stevens-iMac:willie-4.5.1 seansirota$ willie --configure-all
Traceback (most recent call last):
  File "/usr/local/bin/willie", line 29, in <module>
    from willie.config import Config, create_config, ConfigurationError, wizard
  File "/Library/Python/2.7/site-packages/willie/config.py", line 52, in <module>
    import willie.bot
  File "/Library/Python/2.7/site-packages/willie/bot.py", line 26, in <module>
    import willie.irc as irc
  File "/Library/Python/2.7/site-packages/willie/irc.py", line 39, in <module>
    import backports.ssl_match_hostname
ImportError: No module named backports.ssl_match_hostname