and i also really really love the error messages with the pip command lines that you can just copy paste into the command line to repro -- absolute game-changer:

pex.jobs.Error: Executing /opt/twitter_mde/package/eepython36/68cc93925092a6fc31d254392558fa8c840f7bd5407db9435ca48ff1b8f6c07f/bin/python3.6 /Users/dmcclanahan/.pex/pip.pex/2b70de9821e1bfe0db893f97660f5418bcf3dcb9 --disable-pip-version-check --isolated --no-python-version-warning -q --no-cache-dir install --no-deps --no-index --only-binary :all: --target /var/folders/_r/gknsp2dd6bs3k1y9s6btxbyc0000gn/T/tmpzw5yttp7 --no-compile ./dist/.ipex-downloads/wheel/tensorflow-1.14.0-cp36-cp36m-macosx_10_11_x86_64.whl failed with 2