I know how to create virtual environments, but I'm dealing with software that is able to detect that it is being given a virtual environment, and it refuses to run. It also won't accept the system python because that uses PEP 668 now so the software complains of being unable to install what it wants.
So I need to create a full separate copy of python on my system that is indistinguishable from the real deal, and pass its path to the software as a python interpreter.