Yeah just kind of frustrating how the Python plugin (which has a dependency on Pylance) just fails to install Pylance in Antigravity. I even got some error messages related to it.
It looks like that is a fork of basedpyright. I have just been using basedpyright now. Better than Jedi / Windsurf Pyright (at least in the import area which was frustrating me).
Idk what cursor does, my free credits ran out a while ago :P
I think you can use BasedPyright? Not sure if other Pyright variant work (e.g., * for Cursor/Windsurf etc.) but this one works for me.