FileSystem calls over Atomics.wait instead of service worker when available

[martinRenou]

This has the implication of moving from using comlink to using coincident for the Main <-> Worker communcication

[github-actions]

👈 Try it on ReadTheDocs

[martinRenou]

Oh there are no visual regression tests testing the code execution. That makes me uncomfortable :)

[martinRenou]

Well at least we have the readthedocs build for trying

[martinRenou]

Let's get #115 in first

[bollwyvl]

On RTD, this still demonstrates jupyterlite/jupyterlite#1412 .

If that gets fixed over there, we need that to land a PR and ship another beta there before this can be reviewed.

If this is going to get fixed on this side, it has to happen either on a separate PR, or on this PR, before it can be properly reviewed.

[martinRenou]

I can't seem to be able to reproduce what you're seeing on this RTD build

[jtpio]

I can't seem to be able to reproduce what you're seeing on this RTD build

jupyterlite/jupyterlite#1412 mentions the build on the JupyterLite repo, which likely uses an old release of jupyterlite-pyodide-kernel. In that case using https://jupyterlite--1383.org.readthedocs.build/en/1383/_static/lab/index.html I can also reproduce the error:

Could it be because that RTD demo uses the latest JupyterLite, but an older jupyterlite-pyodide-kernel. If so, wouldn't that be fixed with the JupyterLite 0.4.0 and jupyterlite-pyodide-kernel 0.4.0 final releases? (as with this PR)

[bollwyvl]

Welp, i'm getting 100% repro of the above issue on linux/chromium 126.0.6478.61, in and out of an incognito window.

We know it won't work in FF private, but also seeing in firefox 127.0:

[martinRenou]

I've looked deeper into it, I believe jupyterlite/jupyterlite#1418 should fix it. Can you give it a try? I see it working there

[jtpio]

Thanks!

[jtpio]

FYI @bollwyvl 0.4.0b0 is out with this change: https://github.com/jupyterlite/pyodide-kernel/releases/tag/v0.4.0b0

If that looks good to you, we can likely move forward with JupyterLite 0.4.0 and release final in the coming days.

[bollwyvl]

Won't be able to review much this weekend, but will roll it on conda-forge and see what we get...