I changed my laptop with window process to macOS and I installed some development tools and virtual environment tools.

Now I get this error message while installing pipenv

the environment variable LANG is not set!

I did googling and many peoples tell that I have to edit some part in 'profile'.

I'd like to know exactly what do I have to edit in this file and also I'd like to know if that change is valid for macOS.

Thank you very much.