Add an opt-out for the “running as root” warning

What’s the problem this feature will solve?

I want to be able to manually remove the warning pip spews out during package installation in root environment:

Running pip as the 'root' user can result in broken permissions and conflicting behaviour ..

Describe the solution you’d like

I want to be able to disable this warning through an environment variable like

env PIP_DISABLE_ROOT_WARNING=1 pip install flask

Alternative Solutions

No in tool workaround known to me.

Additional context

We are all adults here, I know what I am doing and I do not want to see a warning every time I run my build system. Let me disable the warning by setting an environment variable. I do not want my users to think there is anything wrong my system just because of the pip tool spews out indiscriminate warning messages.

Code of Conduct

• I agree to follow the PSF Code of Conduct.

[pfmoore]

Please, can we not have this debate again? Others have already proposed “disable the warning if you’re in a container” and we’ve responded to that (no, the warning is still valid there - I’m quoting others as my personal experience with containers is limited, so don’t bother trying to engage me in debate over this). Repeating arguments that you could have found by searching the tracker for previous discussion on this topic isn’t likely to change anyone’s mind here…

[potiuk]

Yeah. Checking if you are in container environment would solve vast majority of problems of people who want this warning removed. I think “running root in container” is equally good reason to skip the warning as “running root in cygwin” or “running on windows”. Happy to make PR if I know there is a consensus for that one.