Slow startup on Windows for virtual environments

Even better:

$ Measure-Command { C:\Users\me\miniforge3\envs\env-empty\Scripts\black.exe --version }
TotalMilliseconds  : 820
$ Measure-Command { C:\Users\me\miniforge3\envs\env-empty\python.exe -m black __version__ }
TotalMilliseconds  : 250

The two commands do exactly the same thing!