move to jupyterlab

[vivian-rook]

Not sure if we would want to announce this some before sending it out. The interface would be, suddenly, different.
https://phabricator.wikimedia.org/T295043

[yuvipanda]

here's my suggested method for doing this:

1. Set singleuser.defaultUrl in

   paws/paws/values.yaml

   Line 277 in 246e2af

   singleuser:

   to be /lab so the default UI is JupyterLab
2. Install retrolab as well, primarily because it provides an interface switcher that lets you switch between classic notebook, retrolab and jupyterlab.
3. Make an announcement that the default is what is being switched, and this won't affect what is available.

[yuvipanda]

There is still a lot of extensions and what not that work in classic notebook but don't have equivalents in jupyterlab, so keeping the classic around is helpful

[vivian-rook]

Seems reasonable. Not sure if we will need the redirect as it would appear the default default is /lab.

[chicocvenancio]

Yeah, I think jupyterhub 2 changed the default, so by upgrading we're changing it.

Maybe we should write a small announcement and link to it from the banner?

[vivian-rook]

We could update the banner, though I would expect anyone already logged in would not see it, as, I believe, the banner page would be skipped at that point. Perhaps a message out to cloud-announce?

[chicocvenancio]

The banner is visible on the server lauch page, so everyone should see it eventually. Not sure if currently running servers are restated?

But yeah, we should announce in cloud-announce and probably the tech newsletter as well.

[vivian-rook]

#135 for a potential banner update. Added a line to the newsletter about updating the interface (https://www.mediawiki.org/wiki/Technical_Community_Newsletter/2022/April) how long do we want to wait after sending to cloud-announce before merging this? Two weeks?

[vivian-rook]

Unless there are any objections, my plan is to merge #135
Send a note to cloud-announce linking to https://phabricator.wikimedia.org/T295043 and announcing that the update will go out on the 21st. And sending the same to tech news, such that the news should come out on the 14th giving a week for anyone to notice.

If this all sounds alright, if I could get an approval on this and #135 I'll get things in motion.