pip安装错误：error: externally-managed-environment

pip安装出错：

error: externally-managed-environment

× This environment is externally managed
╰─> To install Python packages system-wide, try apt install
    python3-xyz, where xyz is the package you are trying to
    install.

参考： https://stackoverflow.com/questions/75608323/how-do-i-solve-error-externally-managed-environment-every-time-i-use-pip-3
      https://veronneau.org/python-311-pip-and-breaking-system-packages.html

添加环境变量：export PIP_BREAK_SYSTEM_PACKAGES=1 即可。