Weekly Team Meetings: Jan–Dec 2026

[andrii-i]

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.

Previous meeting notes thread:

• Weekly Team Meetings: Jul–Dec 2025 Weekly Team Meetings: Jul–Dec 2025 #279

[andrii-i]

Wednesday, January 7 '26

Name	Affiliation	GitHub
Mike Krassowski	OpenTeams	@krassowski
Afshin Darian	QuantStack	@afshin
Omar Jarjur	Google	@ojarjur
Jordan Boxer	Hudson River Trading	@jordanhboxer
Isabel Paredes	QuantStack	@IsabelParedes
Andrii Ieroshenko	AWS	@andrii-i
Jeremy Tuloup	QuantStack	@jtpio
Nicolas Brichet	QuantStack	@brichet

Mike:

• backporting Make system clipboard opt-in when performing copy/cut/paste of cells #18250 into 4.5.x
• GSoC

Omar:

• Thoughts/feedback on Support ProactorEventLoop on Windows jupyter-server/jupyter_server#1587 ?
  • Will send out a PR with the proposed change to run tests against and give a concrete place to anchor discussions.
  • Have to also consider why this same change had to be rolled back in ipykernel: ipykernel should use default WindowsProactorEventLoopPolicy rather than WindowsSelectorEventLoopPolicy for windows ipython/ipykernel#1468

Jordan:

• Thoughts/feedback on Fix cell duplication when YStore diverges from disk jupyter-server/jupyter_ydoc#376

Isabel:

• Introduced herself in chat and asked about accessibility issue priority and about issues relating to keyboard navigation.
• Considering: Accessibility - Keyboard Navigation using a Screen Reader jupyterlab#15303 and Accessibility Issues Needing Addressing for WCAG 2.1 compliance (As of Version 2.2.6) jupyterlab#9399
  • Mike:
    • maybe New plugin (token) for aria-live jupyterlab#16145
    • maybe reviewing some PRs from the https://github.com/jupyterlab/jupyterlab/pulls?q=is%3Aopen+is%3Apr+label%3Atag%3AAccessibility queue

[andrii-i]

Wednesday, January 14 '26

Name	Affiliation	GitHub
Mike Krassowski	OpenTeams	@krassowski
A. T. Darian	QuantStack	@afshin
Andrii Ieroshenko	AWS	@andrii-i
Ian Thomas	QuantStack	@ianthomas23
Jeremy Tuloup	QuantStack	@jtpio

Mike:

• JupyterLab 4.5.2 and 4.6.0a1 are out
• GSoC '26? Google Summer of Code 2026? jupyter/governance#322 (Google Summer of Code)
• shout out to Martin for reworking the update snapshots boilerplate
  • Implementationn PR: Add composite workflow action for checking user permissions prior to updating snapshots maintainer-tools#268
  • Example transition Update snapshots bot checkout and permission check jupyterlab-contrib/jupyterlab-favorites#43
• /review-ready command or code owners Improve PR Review Workflow in JupyterLab jupyterlab#18330?

Jeremy:

• AI rules: Add AI rules jupyterlab#18322

Darian:
- small EC update asking about roadmapping sessions / planning the different projects are planning this year, please invite the EC to tag along if there is something coming up

[andrii-i]

Wednesday, January 21 '26

Name	Affiliation	GitHub
Mike Krassowski	OpenTeams	@krassowski
Jason Grout	Independent	@jasongrout
William Stein	SageMath	@williamstein
Drake Aiman	Google	@wh1ter4bb1t-js
Andrii Ieroshenko	AWS	@andrii-i

• Mike:

  • {%preview Started failing with TypeError: '<' not supported between instances of 'str' and 'float' executablebooks/github-activity#164 %}
  • New shortcuts:
    • Ctrl + B for bold (only in markdown cells) {%preview Add Ctrl+B shortcut to toggle bold formatting in markdown cells jupyterlab#18328 %}
    • Accel + Alt + Num to switch tabs {%preview Add keyboard shortcuts to switch main area tabs by index jupyterlab#18293 %}
  • Update CodeMirror to latest versions jupyterlab#18344:
    • backport Backport PR #18344 on branch 4.5.x (Update CodeMirror to latest versions) jupyterlab#18366
      • deactivates new features
      • restores DOM cmView
    • downstream updates:
      • Use public API of CodeMirror's EditorView to find view from DOM jupyterlab-contrib/spellchecker#146
      • Use public API of CodeMirror's EditorView to find view from DOM jupyter-lsp/jupyterlab-lsp#1163

• Jeremy's PR for AI files:

  • Add AI rules jupyterlab#18322

• Isabel Paredes

  • Would like to work on the keyboard shortcut display system.
  • Recent work on keyboard shortcut settings: Allow adding shortcut to commands without default jupyterlab#18163

• @jasongrout

  • Plausible stats for JupyterLite usage on jupyter.org. tl;dr: 15k-20k daily users, average time on page is around 17 minutes

--

What is one thing in your subproject that really should be done in 2026?

• (+2) More contributors and reviewers especially
  • Or ways to scale our reviewing, perhaps using LLMs to help
  • Perhaps starting PR review meetings like the current issue triage meetings
• Easy to use UI library (like Material UI) for consistent UI elements people can easily use
• Enable JupyterLab researchers to use local AI models or in-cluster AI models
  • Better integration in general with AI tooling by default with builtin packages
• Move document and session state to the server
  • William polished and open sourced the realtime sync algorithm used by cocalc: https://github.com/sagemathinc/patchflow It’s a very different feel than yjs — much more like a revision control system.

[RRosio]

Wednesday, January 28 '26

Name	Affiliation	GitHub
Mike Krassowski	OpenTeams	@krassowski
Jason Grout	Independent	@jasongrout
Ian Thomas	QuantStack	@ianthomas23
Rosio Reyes	Anaconda	@RRosio
A. T. Darian	QuantStack	@afshin
Jeremy Tuloup	QuantStack	@jtpio
Omar Jarjur	Google	@ojarjur
Nick Bollweg		@bollwyvl
R Ely		@ohrely

• Mike

  • LLM policy AI-assisted code policy: "Literature Review" jupyter/governance#326
    • One problem is the disproportion between the cost of generating vs reviewing the code
    • Omar: minimum could be "All use of LLMs must be disclosed up front"
    • Nick: a checklist with
      [ ] I did not use any AI
      [ ] I did use AI
      [ ] this is the model
      [ ] this is the prompt
    • consensus: tedious but would be valuable to gather data
    • split between what the LLM touches (code vs assist)
    • Add PR / issue template disclosure checkboxes?
      • - [ ] No code in this PR was generated with AI
      • - [ ] Some code in this PR was generated using AI.
      • - [ ] I have carefully reviewed this code (until this is true, keep the PR draft)
      • - AI models used:
    • "you must start with a new test that shows the problem before submitting a fix"
  • Improving quality of software and review capacity
    • [preface] working on shortening feedback loop for integration tests
    • copilot like reviews eg
      • Copilot
      • https://www.ellipsis.dev/
      • https://www.cubic.dev/
      • https://graphite.com/pricing
      • consensus:
        • allow reviewers to request Copilot review for now
        • encourage feedback from users (emojis) for out own evaluation purposes
        • reviewer should quickly triage the LLM results to avoid the PR author having to respond to noise
    • Stricter requirements on testing
      • both unit tests and integration tests
    • How do we ensure extensions still work (to be covered next time)

• Rosio

  • Interested in hosting a community call during this meeting time on February 25- thoughts or concerns? Issue opened in the team compass: Use meeting time for a Jupyter Community Call on February 25th #302

[RRosio]

Wednesday, 04 Feb 2026

Name	Affiliation	GitHub
Jason Grout	Independent	@jasongrout
Jeremy Tuloup	QuantStack	@jtpio
Sylvain Corlay	QuantStack	@SylvainCorlay
Ian Thomas	QuantStack	@ianthomas23
William Stein	SageMath	@williamstein
Konstantin Taletskiy	Anaconda	@ktaletsk
Rosio Reyes	Anaconda	@RRosio

• First Wednessday: Accessibility topics?

  • "Isabel is not connected but she is working on accessibility topics, more updates to come"- Sylvain
  • Rosio: Any ideas for additional ways in which we could highlight at the dedicated accessibility meeting?

• @SylvainCorlay

  • Quick announcement on notebook.link and demo
    • See blog post for more info
    • Example link from demo: https://notebook.link/@SylvainCorlay/demo
    • Jupyter Games demo
    • AI assistant uses https://github.com/jupyterlite/ai

• @jasongrout

  • JuptyerLab: Follow-up from last week's AI discussion, here is a proposal for AI info in the PR template. Any objections to merging or thoughts for improving?

    ## AI usage
    
    - [ ] No code in this PR was generated by AI
    - [ ] Some or all of the code in this PR was generated by AI.
      - [ ] The author has carefully reviewed this code (keep this PR draft until code has been reviewed)
      - AI tools and models used:
    

  • JupyterLab: FYI, @bollwyvl has a PR to update prettier, which involves lots of formatting changes that may conflict with existing open PRs.

• @krassowski

  • follow up on Copilot reviews experiment:
    • We requested reviews on roughly 16 PRs
    • it looks not everyone can request them :(
      • we may need to request EC/Jupyter Foundation funds to enable it for our repo or in the enteprise settings
    • it was able to pickup some accessibility issues too
    • it looks they are sometimes quite useful e.g.
      • Allow adding shortcut to commands without default jupyterlab#18163 (comment)
      • Fix bulk rename dialog and enable rename for multi-selection jupyterlab#18407
    • List of Copilot-reviewed PRs in JupyterLab
  • Jupyter Foundation CFP update
    • Use sharding for faster visual regression/integration tests merged, UI tests now complete within 15 minutes. More work to come!
    • Tracking progress of proposals touching jupyterlab code in {%preview CFP '25 tracking %}
  • Cell duplication for ydoc still a problem and might be a problem until yjs v14 comes out (which is in pre-release since ~2022ish)
  • A couple of PRs on JupyterLab repo which need discussion.

• @andrii-i: let's (again) discuss potentially automatically running an agentic review for all new PRs and mb issues (for triaging)? Reviewers can later disagree / delete / edit the review. This might help with review load

  • @jasongrout: For PRs, I would prefer to expand the opt-in trial for now.
  • @SylvainCorlay: pointer to previous work by Matthias Meschede https://github.com/QuantStack/Trigent, which was applied to JupyterLab to create the issue triage board

• @ianthomas23

  • ipykernel 7.2.0 release planned for Friday
    • improvements to debugging
    • XPUB socket for iopub channel JEP 65
    • kernel spec reporting correct kernel protocol version, etc
    • wx event loop improvements

• @SylvainCorlay

  • Please vote on the parameterized kernelspec JEP
  • Parameterized kernel specs proposal jupyter/enhancement-proposals#87

• @ktaletsk

  • JupyterLab has reached 700 published JupyterLab-4-compatible extensions today!
    • Is there an interest in Jupyter blog post celebrating the milestone?
      • @jasongrout: YES!

[andrii-i]

February 10, 2026

Name	Organization	Username
Andrii Ieroshenko	AWS	@andrii-i

Before the meeting, 14 issues in JupyterLab needed triage. After the meeting, 1 remain.

• File Browser changed to tree view after clicking Build button - list view and time column disappeared jupyterlab#18436 (needs info)
• Drop lerna jupyterlab#18437 (accepted)
• Workspace tests became very flaky recently jupyterlab#18441 (accepted)
• Use Ywasm instead of Yjs jupyterlab#18443 (accepted)
• Race condition: renaming a file before it fully initializes leads to "File Load Error" jupyterlab#18455 (accepted)
• Selection is slow with line wrapping enabled since v4.5.3 (after CodeMirror upgrade) jupyterlab#18456 (accepted)
• Notebook initialization steals focus jupyterlab#18457 (accepted)
• Race condition when toggling multiple settings in a short interval jupyterlab#18458 (accepted)
• Item added from extension should be correctly placed in popup toolbar is flaky jupyterlab#18459 (accepted)
• Notebook metadata common tools input prompt blinks when switching cells jupyterlab#18460 (accepted)
• Debugger does not show the variables tree reliably after pressing F9 jupyterlab#18461 (accepted)
• Search in selection filter sometimes does not update from cell to line mode jupyterlab#18462 (accepted)
• Sometimes the cell does not scroll into view correctly (full windowing off) jupyterlab#18468 (accepted)
• Infinite loop with scroll jumping back and forth with only one code cell jupyterlab#18470 (accepted)

Before the meeting, 2 issues in Notebook needed triage. After the meeting, 0 remain.

• Prooblem opening a notebook with "%20" in the file name jupyter/notebook#7823 (accepted)
• LaTeX newcommands not used at startup in first few cells but then used after that jupyter/notebook#7827 (accepted)

Before the meeting, 0 issues in JupyterLab-Desktop needed triage. After the meeting, none remain.

Before the meeting, 0 issues in NBClassic needed triage. After the meeting, none remain.

[andrii-i]

February 24, 2026

Name	Organization	Username
Andrii Ieroshenko	AWS	@andrii-i
Rosio Reyes	Anaconda	@RRosio

Before the meeting, 7 issues in JupyterLab needed triage. After the meeting, 0 remain.

• Font-family does not get applied to <select>, <button> and <input> elements jupyterlab#18537 (accepted)
• Should we enforce that certain CSS rules use variables? jupyterlab#18540 (accepted)
• Debugger documentation snapshots get updated each time tests are run locally jupyterlab#18546 (accepted)
• Terminal playwright tests should not use explicit timeout jupyterlab#18551 (accepted)
• Visual documentation tests should not pin IPython version jupyterlab#18552 (accepted)
• Screenshot updates lead to merge conflicts which require manual resolution jupyterlab#18553 (accepted)
• Choose a good set of default font families for DataGrids jupyterlab#18557 (accepted)

Before the meeting, 2 issues in Notebook needed triage. After the meeting, 0 remain.

• Introduce a setting to change relative timestamps vs exact timestamps shown in File Browser jupyter/notebook#7833 (closed)
• Remove Python 3.15 pin on CI jupyter/notebook#7838 (accepted)

Before the meeting, 0 issues in JupyterLab-Desktop needed triage. After the meeting, none remain.

Before the meeting, 0 issues in NBClassic needed triage. After the meeting, none remain.