Following https://github.com/microsoft/vscode-python/wiki/Coding#building I hit this:

I assumed that meant it's not on the PATH but was registered correctly as what normally happens on Windows, so I closed VS Code, opened it again (most people may know to try this) and created a new terminal (most people wouldn't know to do this step). But that didn't end up fixing it:

From there I had a screenshot of the warning above because I was reporting this issue, so I added it to the Windows environment by typing out the path manually:

After that nox was available.
I did then run into this error but I know that's about me ignoring Rust as a pre-requisite earlier.

We should explain that where nox is installed into may not be in the path. Also wasn't it meant to be installed into venv since it was activated?