pip 20.3 issues

[mcbanderson]

pip 20.3 may be causing issues. We need to investigate and possibly resolve.

[mcbanderson]

The following error message appears during build when running the following steps. More work is needed to conclusively determine if this is a pip 20.3 issue.

pyenv virtualenv 3.8.1 reflex # make a virtual environment on python 3.8.1
pip install reflex-cli
reflex init
reflex build

Installing collected packages: urllib3, jmespath, six, python-dateutil, botocore, s3transfer, boto3, chardet, certifi, idna, requests, reflex-core
ERROR: After October 2020 you may experience errors when installing or updating packages. This is because pip will change the way that it resolves dependency conflicts.
We recommend you use --use-feature=2020-resolver to test your packages with the new resolver before it becomes the default.
pygithub 1.54 requires requests<2.25,>=2.14.0, but you'll have requests 2.25.0 which is incompatible.