Jeremy Tuloup

Looks like the CI now passes with the new https://github.com/microsoft/playwright/releases/tag/v1.53.1, which fixes a couple of regressions.

Thanks @choldgraf that sounds like a good idea :+1: For reference the `latest` docs have already been updated with very basics instructions for making extensions for lab 4 / nb...

Some improvements to the docs to mention the migration to Notebook 7 landed in https://github.com/jupyter/notebook/pull/6737. But we still need to rework the front-end documentation page.

Maybe this change would need to target `6.5.x` to the warning is visible on the Classic Notebook v6 documentation. For example: https://jupyter-notebook.readthedocs.io/en/v6.5.4/

> * Also, are there some server docs that might still benefit from the warning even if the API is not necessarily entirely different? For the server docs maybe a...

Also wondering if there could be a way to add tests for this? Maybe a Galata test with a custom plugin that swaps the default `ServiceManager` (or the default drive)...

@fcollonval curious about the reasons for closing this PR? It looks like would still be useful and relevant. Happy to revive it if you don't have time to work on...

> provide registries for the services to allow greater flexibility without reducing extensions compatibility. Right, in the end we seem to always come back to the fact that the `ServiceManager`...

Thanks @juntyr for the report. I don't recall if this was on purpose or temporary, but it still looks like something that could be fixed. cc @martinRenou who may know...

Not sure in what state the extension is at the moment, but if it's working fine then yes we can move it over.