Warn users that Voila/pip will downgrade Jupyter-Server.

[janbucher]

Problem

If you install voila on Jupyterhub 4 (for Notebook V7) using pip as documented, it will break your Jupyterhub because it is downgrading jupyter-server.

Suggested Improvement

Compatibility to Jupyter-Server 2.7 would be favorable, and tickets exists asking for this.
But in the meantime a warning in the documentation would be nice, since more inexperienced people will try to check out Notebook V7 RCs ...

[trungleduc]

Hi, Jupyterlab 4 support is in WIP #1343

[jablka]

yes, I just come across this!
I've just installed Voila via pip and noticed the 'red text' (error message).
Can I ignore it? I use to upen .ipynb files in VSCode... not sure if some functionality would be affected when jupyter-server is downgraded?