ERROR: (Gentoo) Please run pip with the --user option to avoid breaking python-exec
Exception information:
Traceback (most recent call last):
  File "/usr/lib64/python3.6/site-packages/pip/basecommand.py", line 215, in main
    status = self.run(options, args)
  File "/usr/lib64/python3.6/site-packages/pip/commands/install.py", line 239, in run
    raise CommandError("(Gentoo) Please run pip with the --user option to avoid breaking python-exec")
pip.exceptions.CommandError: (Gentoo) Please run pip with the --user option to avoid breaking python-exec
