Why cant I choose Python 3 as the default Egnine?

Tools
1

Why can’t I choose Python 3 as the default Engine? The arrow option beside ActiveEngine: Iron Python 2 is greyed out, and I can’t choose CPython.
I am creating an additional plugin with ChatGPT integration, and in the config file, I used #! Python 3 as the first line still doesn’t work.

2

Have you tried the pyRevit CLI? I’m not sure why the engine is greyed out, but I have had success in the past with this: pyrevit attach master 342 --installed

Once you set the active engine, you should not have to put that first line in the config file.