This will fail due to a circular dependency:

Activating extension 'ms-python.python' failed:
Circular dependency found:
Symbol(IInterpreterSecurityService)
--> Symbol(IInterpreterSecurityStorage)
--> Symbol(ICommandManager)
--> Symbol(IJupyterExtensionDependencyManager)
--> Symbol(ICommandManager).

I tested with the Pylance ones, then saw the Jupyter ones after and fixed them, but didn't test locally.

Solved it my making it a parameter, the cycle was that CommandManager and JupyterExtensionDependencyManager depended directly on each other. Arguably, a better fix is to move the install logic to the command manager, as it is the only user, but that's a more significant change.