pip安装报错Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-e

Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-e_k8hq6a/pynacl/

提示pip版本太低，可以更新pip版本试试

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原文地址：https://www.cnblogs.com/paul8339/p/10874313.html