An alert while running pip3 sent me to some advice to "Only ever use your system package manager to upgrade the system pip." This was the original alert:
WARNING: pip is being invoked by an old script wrapper. This will fail
in a future version of pip. Please see
https://github.com/pypa/pip/issues/5599 for advice on fixing the
underlying issue. To avoid this problem you can invoke Python with '-m
pip' instead of running pip directly.
I don't see pip or pip3 in my existing repositories. Is there a right way to fix this, consistent with the best practices?