一、安裝OpenBazaar-Server
$ sudo /Users/shijun/.pyenv/versions/3.7.0/bin/pip3.7 install -r requirements.txt
問題:Command "python setup.py egg_info" failed with error code 1 in /private/tmp/pip-install-2elab74f/pynacl/
解決:$ /Users/shijun/.pyenv/versions/3.7.0/bin/pip3.7 install --upgrade setuptools
$ sudo /Users/shijun/.pyenv/versions/3.7.0/bin/pip3.7 install pynacl