Weekly Team Meetings: Jan–Jun 2025

[jtpio]

Here is a record of the agenda/minutes for our weekly meeting. Everyone is welcome to join.

Let's avoid using this thread for discussion. If you'd like to discuss something in the minutes, open a separate issue and reference this thread.

Here are the meeting notes for the 6 previous months (June–December 2024)

Meeting Notes

• Jun 25, 2025
• Jun 18, 2025
• Jun 04, 2025
• May 28, 2025
• May 21, 2025
• May 14, 2025
• May 07, 2025
• Apr 30, 2025
• Apr 23, 2025
• Apr 16, 2025
• Apr 09, 2025
• Apr 02, 2025
• Mar 19, 2025
• Mar 12, 2025
• Mar 05, 2025
• Feb 26, 2025
• Feb 12, 2025
• Feb 05, 2025
• Jan 29, 2025
• Jan 22, 2025
• Jan 15, 2025
• Jan 08, 2025

[jtpio]

Wednesday, January 8

Name	Affiliation	GitHub
Mike Krassowski	Quansight	@krassowski
Andrii Ieroshenko	AWS	@andrii-i
Eric Gentry	Anaconda	@ericsnekbytes
William Stein	CoCalc	@williamstein
Rosio Reyes	Anaconda	@RRosio
Michael Chin	AWS	@michaelnchin

Agenda

• Mike:
  • 4.2.7 - minor bug fixes, including backport of compatibility for proxy with new httpx versions
    • https://github.com/jupyterlab/jupyterlab/releases/tag/v4.2.7
  • 4.4.0a2 released with two exciting changes
    • content providers (RTC: prefix is gone in jupyter-collaboration 4.0.0a0)
    • subshells
      • Support kernel subshells jupyterlab#16963
      • Maybe remove --subshell-console boolean config flag jupyterlab#17146
    • https://github.com/jupyterlab/jupyterlab/releases/tag/v4.4.0a2
  • 4.4.0 beta next week?
    • 4.4 Release Plan jupyterlab#16904 - release plan
    • Allow customizing the ServiceManager with plugins jupyterlab#16794 - Allow customizing the ServiceManager with plugins - should we wait for it, any idea how long

• Susmit:
  • Question regarding output format handling
  • Question regarding feasibility of using jupyterlite repl within iframe as code executor and output formatter
  • People posted these relevant links in the ephemeral zoom chat:
    • https://github.com/googlecolab/colab-cdn-widget-manager
    • https://github.com/jupyterlab/jupyterlab/tree/main/examples/cell
    • Execute code in kernel API:
      https://jupyterlab.readthedocs.io/en/latest/api/interfaces/services.Kernel.IKernelConnection-1.html#requestexecute
    • Jupyterlab default renderer: https://github.com/jupyterlab/jupyterlab/tree/main/packages/rendermime
    • Related Example of standalone app with ipywidgets support jupyterlab#16227
    • "Code console" might be a simpler model
      https://jupyterlab.readthedocs.io/en/latest/extension/extension_points.html
    • You might find this useful — https://github.com/datalayer/jupyter-ui
      • In particular — https://github.com/datalayer/jupyter-ui?tab=readme-ov-file#nextjs-integration

Recording

[andrii-i]

Wednesday, January 15

Name	Affiliation	GitHub
Andrii Ieroshenko	AWS	@andrii-i
Michael Chin	AWS	@michaelnchin
David Qiu	AWS	@dlqqq
Afshin T. Darian	QuantStack	@afshin
Mike Krassowski	Quansight	@krassowski
Rosio Reyes	Anaconda	@RRosio
Nicolas Brichet	QuantStack	@brichet

Agenda

• Mike

  • Fix scrolling on undo/redo and selection restoration - RTC fallout: Fix scrolling and selection restoration on undo/redo jupyterlab#17158
    • what was the reason for vendoring y.js bindings?
  • help with PR reviews needed, PRs coming in are not hard!
  • stabilizing cells height draft Stabilize cell height when scrolling jupyterlab#17132
  • completer (and inline completer) gets triggered when collaborator is typing Completer (and inline completer) gets triggered when collaborator is typing jupyterlab#17172
    • we need a special annotation to ignore some changes
  • 4.4.0 beta
    • 4.4 Release Plan jupyterlab#16904 - release plan
    • Allow customizing the ServiceManager with plugins jupyterlab#16794 - marked as ready for review 1 hour ago 🎉
    • Allow changing the position of the code console prompt cell, add settings and toolbar items jupyterlab#13837

• Andrii

  • [jupyter-collaboration] Issue #390 "notebook and lab can't open in RTC" - I can reliably and easily reproduce this problem by updating from jupyterlab-chat version that uses jupyter-collaboration v2 to one that uses jupyter-collaboration v3; .jupyter_ystore.db file is not getting moved / updated notebook and lab can't open in RTC jupyter-collaboration#390 (comment)

    • David Q: We should explore dropping YStore by default.
    • Open new issue for a) adding a configurable for enabling YStore & defaulting to False, and b) making YStore better. Instead of a document_ttl, we should probably just have max_updates. This bounds the disk use and makes disk use independent of when the updates were made.

  • [jupyter-collaboration] Issue #425 "Should most collaboration python packages depend on jupyterlab?" Are there any downsides to adding a JupyterLab dependency pin to jupyter-collaboration? A mechanism like this to specify which versions of JupyterLab current version of jupyter-collaboration is compatible with would help with versions mismatch issues. Should most collaboration python packages depend on jupyterlab? jupyter-collaboration#425

• Jeremy

  • Allow customizing the ServiceManager: Allow customizing the ServiceManager with plugins jupyterlab#16794
  • Allow changing the code console prompt cell position: Allow changing the position of the code console prompt cell, add settings and toolbar items jupyterlab#13837
  • SSC election + process: https://github.com/jupyterlab/council/issues/27
  • Zoom link update: Update the link to the Zoom channel #269
  • EC election

• Nicolas

  • jupyterlab-deck has been forked and renamed jupyterlab-slideshow

Recording

[jtpio]

Wednesday, January 22

Name	Affiliation	GitHub
William Stein	CoCalc	williamstein
Andrii Ieroshenko	AWS	@andrii-i
Michael Chin	AWS	@michaelnchin
Eric Gentry	Anaconda	@ericsnekbytes
Jeremy Tuloup	QuantStack	@jtpio
Afshin T. Darian	QuantStack	@afshin
Rosio Reyes	Anaconda	@RRosio

Agenda

• Andrii

  • [jupyter-collaboration] Looking for a review for PR #429 "Pin jupyterlab at >=4.4.0a2,<5.0.0 in projects/jupyter-collaboration subpackage" Pin jupyterlab at >=4.4.0a2,<5.0.0 in projects/jupyter-collaboration package jupyter-collaboration#429
    • One open question about this PR is if platform_system!='Emscripten' should be added to the pin to account for wasm environments. Should most collaboration python packages depend on jupyterlab? jupyter-collaboration#425 (comment)
      • Feedback during the call: adding platform_system!='Emscripten' is not necessary for now as there are no known wasm users
  • [notebook] Issue #7566 "Add left and right padding to active cell border" Add left and right padding to active cell border jupyter/notebook#7566 (looking for feedbak on "Proposed Solution")
    - Feedback during the call: overall sounds good, important to test WCAG reflow requirements for low width / gigh zoom https://www.w3.org/WAI/WCAG21/Understanding/reflow.html
  • [notebook] Issue #7565 "Display "Click to add a cell" button as a part of notebook, not background" Display "Click to add a cell" button as a part of notebook, not background jupyter/notebook#7565 (looking for feedbak on "Proposed Solution")

• Jeremy

  • Code console improvements: Allow changing the position of the code console prompt cell, add settings and toolbar items jupyterlab#13837
    • Same defaults as before
    • Reference: Provide a single executable cell jupyterlite/jupyterlite#148
  • TypeScript update(s): Update to TypeScript 5.2 jupyterlab#17207
    • trying to catch up on 6 TypeScript releases
  • Hide the terminals part of the running sessions status bar item by default: Hide the terminals part of the running sessions status bar item by default jupyterlab#16846
  • Allow customizing the ServiceManager with plugins: Allow customizing the ServiceManager with plugins jupyterlab#16794
    • Discussed at the Jupyter Security meeting: Allow customizing the ServiceManager with plugins jupyterlab#16794 (comment)

• Mike

  • JupyterLab 4.4.0b
    • I will review code console improvements PR
  • PR reviews; highlighting accessibility related PRs
    • Add missing aria labels in application shell jupyterlab#17192
    • Increase color contrast of operators in code editor jupyterlab#17173 - aria labels
    • Fix: Corrected ARIA Labels on MainAreaWidget.ts to show Context-Specific Content jupyterlab#17155 - aria labels
  • Can I get reviews on:
    - Fix scrolling and selection restoration on undo/redo Fix scrolling and selection restoration on undo/redo jupyterlab#17158
    - Add more descriptive labels for fetching Jupyter news options jupyterlab#16848
  • Service manager vote? Allow customizing the ServiceManager with plugins jupyterlab#16794

Recording

[jtpio]

Wednesday, January 29

Name	Affiliation	GitHub
Andrii Ieroshenko	AWS	@andrii-i
Mike Krassowski	Quansight	@krassowski
Michael Chin	AWS	@michaelnchin
Afshin T. Darian	QuantStack	@afshin
Nicolas Brichet	QuantStack	@brichet
William Stein	CoCalc	@williamstein
Rosio Reyes	Anaconda	@RRosio
Dan Yeaw	Anaconda	@danyeaw

Agenda

• Andrii:

  • [notebook] PR #7570 Add active cell border padding, remove double cell padding Add active cell border padding, remove double cell padding jupyter/notebook#7570
  • [jupyter-collaboration] issue #432 Backport jupyterlab pin in projects/jupyter-collaboration to recent major versions of jupyter-collaboration (v2 and v3) Backport jupyterlab pin in projects/jupyter-collaboration to recent major versions of jupyter-collaboration (v2 and v3) jupyter-collaboration#432

• Mike:

  • JupyterLab 4.4.0a3 released: https://github.com/jupyterlab/jupyterlab/releases/tag/v4.4.0a3
  • Releasing 4.3.5 today (might squeeze one or two more PRs)
  • Please help reviewing PRs!

• Darian

  • Calling a vote on PR #16794 on behalf of @echarles.

• Dan:

  • Coverting nbclassic from setup.py to pyproject.toml: Migrate from setup.py to pyproject.toml jupyter/nbclassic#315

[andrii-i]

Wednesday, February 5

Name	Affiliation	GitHub
William Stein	CoCalc	@williamstein
Mike Krassowski	Quansight	@krassowski
Jeremy Tuloup	QuantStack	@jtpio
Sylvain Corlay	QuantStack	@SylvainCorlay
Afshin Darian	QuantStack	@afshin
Trung Duc Le	QuantStack	@trungleduc
Nicolas Brichet	QuantStack	@brichet
Andrii Ieroshenko	AWS	@andrii-i
Eric Gentry	Anaconda	@ericsnekbytes
Michael Chin	AWS	@michaelnchin
Aditya Singh	AWS
Rosio Reyes	Anaconda	@RRosio
Astitv Shandilya	AWS
Keerthi Swarna	AWS

Agenda

• Mike

  • faster rendering of std output - limitting protocol part to 40 characters Speed up output rendering: add a limit on max length of protocol to linkify jupyterlab#17264
  • much smaller bundle for jupyter-ai Enforce path imports for MUI icons, upgrade to ESLint v8 jupyter-ai#1225

• Jeremy

  • Notebook 7.4.0a2: https://github.com/jupyter/notebook/releases/tag/v7.4.0a2
  • JupyterLite 0.6.0a1: https://github.com/jupyterlite/jupyterlite/releases/tag/v0.6.0a1
    • Can be tested here: https://jupyterlite.readthedocs.io/en/latest/_static/lab/index.html

• Darian

  • Revisiting the service manager PR one more time, with a public vote proposed

• Mike again

  • Accessibility in PRs
    • Add missing aria labels in application shell jupyterlab#17192
    • Add (opt-in) workspace selector, show workspace name in the title jupyterlab#17256

Recording

[jtpio]

Wednesday, February 12

Name	Affiliation	GitHub
Eric Gentry	Anaconda	@ericsnekbytes
Rosio Reyes	Anaconda	@RRosio
Jeremy Tuloup	QuantStack	@jtpio
William Stein	SageMath/CoCalc	@williamstein
Nicolas Brichet	QuantStack	@brichet
David Qiu	AWS	@dlqqq
Dan Yeaw	Anaconda	@danyeaw
Afshin T. Darian	QuantStack	@afshin
Michael Chin	AWS	@michaelnchin
Andrii Ieroshenko	AWS	@andrii-i
Sylvain Corlay	QuantStack	@SylvainCorlay
Mike Krassowski	Quansight	@krassowski

Agenda

• Rosio

  • Jupyter Community call next week during this Frontends call time slot: Agenda and sign-ups

• Mike

  • let's release JupyterLab 4.4.0b0 tomorrow?
  • security training (GitHub Secure Open Source Fund) for free looking for a third person (ideally maintainer) to volunteer see GitHub Secure Open Source Fund! jupyter/security#82, https://resources.github.com/github-secure-open-source-fund/ looking
  • for some sanity check on Delay calls to autolink, denounce rendering, preserve selection PR Delay calls to autolink, debounce rendering, preserve selection jupyterlab#17197

• Jeremy

  • TypeScript updates
    • 5.5 merged (thanks Mike for the reviews)
    • looking into 5.6
  • Dedicated zoom room with recording enabled by default?
    • we could try that if it works better for us to grab the recording afterwards
  • Secrets manager extension: [v3-future] Enhance and generalize secret/key management? jupyter-ai#1237
  • Jupyter AI dedicated call?
    • Discussed on Zulip: https://jupyter.zulipchat.com/#narrow/channel/475130-jupyter-ai/topic/Hosting.20a.20new.20weekly.20Jupyter.20AI.20call
    • Settled on 0830 PT on Wednesdays.

• Dan

  • nbclassic build updates: Improve build performance through improving artifact patterns jupyter/nbclassic#317

• Andrii

  • [jupyter-collaboration] FYI jupyter-collaboration 3.x branch was fixed / updated so now PRs can be backported to 3.x and new 3.x releases can be made https://github.com/jupyterlab/jupyter-collaboration/tree/3.x
    • Fix / update was made by renaming 3.x branch to 3.x-broken and creating a new 3.x branch from main up to 3.1.0 release commit Update v3 branch jupyter-collaboration#436

• Extended discussion on secrets:

  • General consensus is that the secrets manager should be a server extension + labextension.
  • Problem: How do we implement this securely in Jupyter?

Recording

[jtpio]

Wednesday, February 26

Name	Affiliation	GitHub
Mike Krassowski	Quansight	@krassowski
Afshin T. Darian	QuantStack	@afshin
Jeremy Tuloup	QuantStack	@jtpio
Andrii Ieroshenko	AWS	@andrii-i
Michael Chin	AWS	@michaelnchin
Rosio Reyes	Anaconda	@RRosio
Pranav Khandelwal	AWS	@pranavkhandelwal
William Stein	SageMath	@williamstein
Eric Gentry	Anaconda	@ericsnekbytes
Jayan Kuttagupthan	AWS	@kjayan

Agenda

• Mike

  • JupyterLab 4.4.0b0 is out
  • Let's write release notes and publish JupyterLab 4.4.0b1 this week
  • Is renaming plugins in 4.4 ok? Enforce plugin name convention and rename noncompliant plugins jupyterlab#17338
  • Windowed notebooks vs Renderers Allow renderers to declare if they support detachment in windowing jupyterlab#17331

• Jeremy

  • Notebook 7.4.0b0 available
  • JupyterLite 0.6.0a2 pre-release available, based on the lab and notebook beta releases
  • SSC nomination period is opened until March 07 2025, AoE Time (Anywhere on Earth)
  • How to use Foundation funds to support the Jupyter community:
    • [Discussion] How to use Foundation funds to support the Jupyter community. jupyter-governance/jupyter-foundation-governing-board#1
    • https://jupyter.zulipchat.com/#narrow/channel/469762-jupyterlab/topic/How.20can.20the.20Jupyter.20Foundation.20help.20the.20Jupyter.20community.3F

• Rosio

  • February community call recording
  • Question about: tag:Documentation and documentation
    • Mike:
      • tag:Documentation - 18 issues, 14 PRs
      • documentation - 338 issues, 1253 PRs
  • Question: how to handle llm generated comments in issues?
    • Mike mentioned a conversation on Zulip (link to conversation)
    • Jeremy mentioned the option to hide a comment on an issue
    • Darian hid the comment

• Jayan

  • Documentation PR in Jupyter Server https://github.com/jupyter-server/jupyter_server/pull/1499/files
  • Are additional file changes in this PR safe to proceed with?

Recording

[jtpio]

Wednesday, March 5

Name	Affiliation	GitHub
Mike Krassowski	Quansight	@krassowski
Jeremy Tuloup	QuantStack	@jtpio
Andri Ieroshenko	AWS	@andrii-i
Michael Chin	AWS	@michaelnchin
Nicolas Brichet	QuantStack	@brichet
Dan Yeaw	Anaconda	@danyeaw
Florence Haudin	QuantStack	@HaudinFlorence

Agenda

• [Andrii] I've opened these 2 PRs pinning jupyterlab in jupyter-collaboration 2.x and 3.x (such pin was merged into main in PR 429). Looking for reviews/additional inputs/approvals:

  • Pin jupyterlab in projects/jupyter-collaboration package in 3.x - Pin jupyterlab in projects/jupyter-collaboration package in 3.x jupyter-collaboration#446
  • Pin jupyterlab in 2.x - Pin jupyterlab in 2.x jupyter-collaboration#447

• Jeremy

  • SSC nomination
  • Plugin updates in JupyterLab for downstream use
    • Expose ConfigSectionManager via a plugin jupyterlab#17345
    • Add IKernelAPIClient and ISessionAPIClient as options for Kernel.IManager and Session.IManager jupyterlab#17348

• Mike

  • JupyterLab 4.4 changelog https://github.com/jupyterlab/jupyterlab/pull/17368/files

Recording

[jtpio]

Wednesday, March 12

Name	Affiliation	GitHub
Mike Krassowski	Quansight	@krassowski
Vidar Fauske	JP Morgan Chase	@vidar
Jeremy Tuloup	QuantStack	@jtpio
Andrii Ieroshenko	AWS	@andrii-i

Agenda

• Mike

  • JupyterLab 4.4 beta1 today
  • RC next week changelog User-facing changelog for 4.4 jupyterlab#17368

• Vidar

  • WIP PRs for adding support for non-US keyboards:
    • jupyterlab#17378
    • lumino#291

Recording

[jtpio]

Wednesday, March 19

Name	Affiliation	GitHub
William Stein	SageMath	@williamstein
Eric Gentry	Anaconda	@ericsnekbytes
Mike Krassowski	Quansight	@krassowski
Vidar T Fauske	JP Morgan Chase	@vidartf
Sanjiv Das	AWS & SCU	@srdas
Nicolas Brichet	QuantStack	@brichet
Michael Chin	AWS	@michaelnchin
Jeremy Tuloup	QuantStack	@jtpio
Ian Thomas	QuantStack	@ianthomas23
Dan Yeaw	Anaconda	@danyeaw

Agenda

• Andrii

  • Looking for review / advise for "When an entire cell is extracted from lsp virtual document do not add an empty code cell equivalent, do not add new separator lines after it" When an entire cell is extracted from lsp virtual document do not add new separator lines after it jupyterlab#17412

    • Currently only prevents addition of separator lines
    • When we say "do not add an empty code cell equivalent" to virtual doc, does it mean that cell should not be represented at all / total count of cells should be decreased by 1?
    • With jupyterlab-lsp and 'python-lsp-server[all]' installed, suggestions / warnings do not work in dev-mode so testing changes in /jupyterlab/packages/lsp/src/virtual/document.ts that affect suggestions is non-trivial. Any suggestions on optimal dev workflow?

  • 2 recently discovered Notebook issues breaking user experience / not allowing users to work:

    • Scrolling causes display issues: blank areas appear jupyter/notebook#7597
    • involuntary scroll movements jupyter/notebook#7600

  • I wanted to organize a bug bash(es) for JLab 4.4 so I was curious

    • What is the release plan and if now / soon would be a good time to do the bug bash(es) or if there are still major changes and features expected to be pushed
      • RC was planned for today, there are 2 blocking issues with open PRs https://github.com/jupyterlab/jupyterlab/issues?q=is%3Aissue%20state%3Aopen%20label%3A%22tag%3ARelease%20Blocker%22
      • Release plan is (always) pinned in the JupyterLab repo 4.4 Release Plan jupyterlab#16904
    • Should it be a public bug bash during JLab call? Even if we don't do a public one I plan to do an internal one with my team
      • No opposition to having a bug bash next week or next week +1

• Vidar

  • Lumino PR for adding support for non-US keyboards ready for review: Add capability for KeyboardEvent.code + capture lumino#291

• Mike

  • looking for reviews
    • Fix types in translation package, remove usages of any jupyterlab#17414
    • Create "Kernels" section, split statusbar settings jupyterlab#17415

Recording

[jtpio]

Wednesday, April 2

Name	Affiliation	GitHub
Andrii Ieroshenko	AWS	@andrii-i
Dan Yeaw	Anaconda	@danyeaw
Rosio Reyes	Anaconda	@RRosio
Mike Krassowski	Quansight	@krassowski
Nicolas Brichet	QuantStack	@brichet
Andrii Ieroshenko	AWS	@andrii-i
William Stein	SageMath	@williamstein
Eric Gentry	Anaconda	@ericsnekbytes
Jason Grout	Databricks	@jasongrout
Drake Aiman	Google	@wh1ter4bb1t-js
Michael Chin	AWS	@michaelnchin
Jeremy Tuloup	QuantStack	@jtpio
Mike Krassowski	Quansight	@krassowski

Agenda

• [William] NATS - https://nats.io/

  • a cool pub/sub service written in Go that has persistence and excellent websocket support.

• [Andrii] During the triaging call this week we classified bugs found during JupyterLab 4.4 bug bash last week (https://docs.google.com/spreadsheets/d/14o2sq5IGs_My3i1CDd0iQE7Hpa5cXrnc1neBl0XurU0/edit?usp=sharing).

  • "Add Cell" regression in 4.2.x on Safari jupyterlab#16373 was the only one high severity / user experience breaking.
    • Activating requestIdleCallback feature in Safari 18.3, 18.4 or Safari Technology Preview fixes this
    • caniuse https://caniuse.com/ lists requestIdleCallback as supported in Safari Technology Preview but it still needs to be activated

• Mike:

  • JupyterLab 4.4.0 RC 1 is out: https://github.com/jupyterlab/jupyterlab/releases/tag/v4.4.0rc1
    try it here https://gist.github.com/krassowski/b4ca66b20c044ba228bbfbb3be95becd
  • Plan to release final tomorrow
  • Planning to release IPython 9.1 tomorrow
    • %notebook now will allow to export full session to a notebook
    • ipykernel overlap with stream capturing

Additional discussions

• Nicolas: allowing changing the user name when using jupyter-collaboration
  • Allow users to edit the name "Anonymous .*" jupyterlab#14327
  • Changing Username in Jupyter Lab and Setting User-Specific Colors jupyter-collaboration#350

Recording