Homebrew installation broken on Python < 3.7

This is probably related to #2296, but I’m currently unable to upgrade pipenv past 2018.6.25 using Homebrew.

I have my Python pinned at 3.6.5 with brew switch python 3.6.5_1 && brew pin python

Because of this I have to --build-from-source for any upgrade to a brew-installed package that depends on python as the bottles are built on Python 3.7.

After brew upgrade pipenv --build-from-source I get the following error:

pipenv --help
Traceback (most recent call last):
  File "/usr/local/Cellar/pipenv/2018.10.9/libexec/bin/pipenv", line 6, in <module>
    from pkg_resources import load_entry_point
  File "/usr/local/Cellar/pipenv/2018.10.9/libexec/lib/python3.6/site-packages/pkg_resources/__init__.py", line 26, in <module>
    import zipfile
ModuleNotFoundError: No module named 'zipfile'

Switching back to 2018.6.25 resolves the issue, but it’d be nice to get on the latest version.

[Samox]

Thanks @amancevice 😃 I finally managed to make it work with pipenv. For documentation here are the steps:

• brew uninstall pipenv
• brew install pipenv
• brew install python 3.6.4_4
• Create a symlink ln -s /usr/local/Cellar/python/3.6.4_4/bin/python3 /usr/local/opt/python/bin/python3.6 because pipenv will ttry to find it here…
• now use the destructive command pipenv shell --python /usr/local/Cellar/python/3.6.4_4/bin/python3 a new virtualenv will be created
• You can now use pipenv cli pipenv shell or pipenv install with the python 3.6 version

@amancevice In my case I did not have to use pyenv. The only annoying thing is that you need to find where brew will install python distribution.

[uranusjr]

Closing since there isn’t really anything to track in this repo. Feel free to reopen (or raise a new issue) if cooperation from us is needed to resolve this issue.