PYLAUNCH_DEBUG not printing info

[Richard David]

Why am I not getting debug output on my windows 10 machine:

C:\temp>\Windows\py.exe -0
 -V:3.11 *        Python 3.11 (64-bit)
 -V:3.10          Python 3.10 (64-bit)

C:\temp>set PYLAUNCH_DEBUG=1

C:\temp>\Windows\py.exe
Python 3.11.0b3 (main, Jun  1 2022, 13:29:14) [MSC v.1932 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> ^Z