RuntimeError with py38 on Windows

[s-weigand]

I'm not sure if I'm barking up the wrong tree and this is a problem with jupyter_client, but I'm sure you are more qualified to assess that.

Description:
Python version: 3.8
Os: Windows 10 (windows-latest on github actions)

If you run nbval with this settings, The kernel does not respond and throws:

RuntimeError: Kernel didn't respond in 60 seconds

This problem only occurs on Windows, MacOx and Linux work fine.

PS: If you are interested to migrate you tests to github actions as well, I could make a PR for that.

[takluyver]

I suspect this was actually an issue with ipykernel: ipython/ipykernel#456

PS: If you are interested to migrate you tests to github actions as well, I could make a PR for that.

I haven't got round to looking into them. Is there any particular advantage if there's a CI setup that already works?

[s-weigand]

Thanks for the info, I will wait for a new release of ipykernel and try again ^^

As for GH actions:

• The worker have better hardware specs compared to other free CI services
• You can test Windows, Linux and MacOs in one palce
• And you can run up to 20 concurrent jobs (5 concurrent MacOs jobs)

[vidartf]

Closing as solved upstream. If that's not the case, please comment, and I'll reopen :)