Hello: I've been trying to set up a Jupyter environment with the Guix kernel inside a guix environment using: `guix environment --ad-hoc guix-jupyter jupyter -- jupyter notebook`. Jupyter starts up fine, but when I create an empty notebook with the Guix kernel it spams Nudge messages in the console, followed by a crash: ``` [W 16:25:40.117 NotebookApp] Nudge: attempt 120 on kernel 14569df8-e4d1-4847-ae1f-c68e13feeed8 [E 16:25:40.479 NotebookApp] Uncaught exception GET /api/kernels/14569df8-e4d1-4847-ae1f-c68e13feeed8/channels?session_id=05319f9c28b3455cad1b9f4fcf9e0e41 (127.0.0.1) HTTPServerRequest(protocol='http', host='localhost:8888', method='GET', uri='/api/kernels/14569df8-e4d1-4847-ae1f-c68e13feeed8/channels?session_id=05319f9c28b3455cad1b9f4fcf9e0e41', version='HTTP/1.1', remote_ip='127.0.0.1') Traceback (most recent call last): File "/gnu/store/zkjmzfd8li7p7yaihm9rs617vqq9n5qh-python-tornado-6.1/lib/python3.8/site-packages/tornado/websocket.py", line 956, in _accept_connection await open_result tornado.util.TimeoutError: Timeout ``` Attempting to run anything in the notebook such as `;;guix environment matplotlib-env <- python-ipykernel python-numpy python-matplotlib` simply does nothing. I'm not sure if this is an issue with me misconfiguring something or if it's actually a bug, but I haven't been able to chase it down as I don't really understand the internals of Jupyter all that well. Adding `python-ipykernel` and using a Python kernel works fine. -- Domagoj