Reference to _winreg on macOS

butterflow fails to run on macOS due to a reference to _winreg (which appears to be Windows-specific):

Traceback (most recent call last):
  File "/usr/local/bin/butterflow", line 11, in <module>
    load_entry_point('butterflow==0.2.4a4', 'console_scripts', 'butterflow')()
  File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 489, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2843, in load_entry_point
    return ep.load()
  File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2434, in load
    return self.resolve()
  File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2440, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
  File "build/bdist.macosx-10.14-x86_64/egg/butterflow/__init__.py", line 6, in <module>
ImportError: No module named _winreg

[GodloveD]

fwiw, it looks like you can checkout the last (I assume stable?) release to get around this error on Ubuntu 16. Guess it will probably work on Mac too.

$ cd butterflow && git checkout 0.2.3

[alfraises]

Unfortunately I have the same problem on Ubuntu 16.04, and the solution of @ascendant512 didn’t work for me.