Unsatisfied version from _JUPYTERLAB.CORE_OUTPUT makes Spyder hang on closing

[danhar]

After clean install with latest miniforge (24.11.3-2), Spyder hangs when closing when spyder-notebook is installed.

Spyder internal console shows the below messages. After uninstalling spyder-notebook, messages disappear and Spyder doesn't hang on closing.

Unsatisfied version 4.2.0 from _JUPYTERLAB.CORE_OUTPUT of shared singleton module @jupyterlab/application (required ~4.0.3)
Unsatisfied version 2.0.1 from _JUPYTERLAB.CORE_OUTPUT of shared singleton module @jupyter/ydoc (required ~1.0.2)
Unsatisfied version 4.3.0 from _JUPYTERLAB.CORE_OUTPUT of shared singleton module @jupyterlab/apputils (required ^4.4.6)
Unsatisfied version 4.2.0 from _JUPYTERLAB.CORE_OUTPUT of shared singleton module @jupyterlab/translation (required ^4.3.6)
Unsatisfied version 6.2.0 from _JUPYTERLAB.CORE_OUTPUT of shared singleton module @jupyterlab/coreutils (required ^6.3.6)
Unsatisfied version 4.2.0 from _JUPYTERLAB.CORE_OUTPUT of shared singleton module @jupyterlab/application (required ^4.3.6)
Unsatisfied version 4.2.0 from _JUPYTERLAB.CORE_OUTPUT of shared singleton module @jupyterlab/ui-components (required ^4.3.6)
No satisfying version (^4.3.6) of shared module @jupyterlab/docregistry found in shared scope default.
Available versions: 4.2.0 from _JUPYTERLAB.CORE_OUTPUT
Unsatisfied version 4.2.0 from _JUPYTERLAB.CORE_OUTPUT of shared singleton module @jupyterlab/rendermime (required ^4.3.6)
Unsatisfied version 4.2.0 from _JUPYTERLAB.CORE_OUTPUT of shared singleton module @jupyterlab/notebook (required ^4.3.6)

[jitseniesen]

Hi, thanks for the report. Unfortunately I can't reproduce this. Which OS are you on?

More precisely, I do get the same messages as you when I do a fresh install but they seem harmless on my computer: Spyder closes normally. I will tighten the requirements in the next release to get rid of the messages, as they do indicate a potential problem.

[danhar]

I am forced to use Windows 11 (against my will). Spyder would not always hang on close, I think the longer it was open the likelier it would hang. But it's working well after uninstalling spyder-notebook.

[jitseniesen]

@danhar A new version of spyder-notebook was released one or two weeks ago. It should resolve the "Unsatisfied version" error message. However, I am not sure it will resolve the problem with hanging when you close Spyder. To be honest, I doubt it but it may be worth a try.