Sorry Python but it is what it is.
Well if the file would be created by hand, that's very cumbersome.
But what is sometimes done to create it automatically is using
pip freeze > requirements. txt
inside your virtual environment.
You said I don't need to create this file? How else will I distribute my environment so that it can be easily used? There are a lot of other standard, like setup.py etc, so it's only one possibility. But the fact that there are multiple competing standard shows that how pip handles this is kinds bad.