# HoloViz meetings
## https://hackmd.io/@holoviz/minutes/edit

HoloViz meetings are usually for general planning and status discussions. See https://hackmd.io/@holoviz/BygVgIC6L for the triaging checklist, and https://status.holoviz.org for the list of projects to triage.

# 2025-12-12 HoloViz Steering Committee Meeting

Attendees: Jim, Philipp, Maxime, Andy, Mateusz, Andrew, Demetris, Dharhas, Marc, Jean-Luc, Scott

Action Items:
- Philipp reach out to openteams about Lumen demo, testing, positioning
- Maxime, check no conflict with NUMFOCUS sponsorship

## Agenda:
- Lumen (Philipp)
- Lumen 1.0 Soft launch in ~1 week with improved UI and internals
- Lumen AI API improved
- Lumen docs under active revision
- Outreach and Comms
- Give talk to openteams
- https://openteams.com/community-events/
- Get on podcasts
- e.g. https://www.google.com/search?q=marimo+podcast
- compare to mcp-ui, plotly ai
- Anaconda podcast on release
- Andrew working on weather data example in docs
- Philipp to create finance example
- Demetris/others to create cancer/omics example.. Lumen-AnnData will be part of the extensible story of the release
- Unique Positioning
- choose from almost any llm (cloud or local)
- register custom analyses
- contextualized subclass with function that can return a renderable component
- data size limitations of other tools.. might be something to consider for outreach materials
- export reports or notebook
- Upcoming Roadmap:
- Session persistence
- Viz interactions inform chat
- UI output being SQL-focused is still oriented to a technical user base
- Unclear how important SQL is to most users
- Cleaning up the notebook export would be nice
- Public deployment for 1.0 would be very helpful
- Andrew has something on Gemini
- Lumen-AnnData and funding outlook of future cancer-oriented work

- Upcoming NF SDG - HoloViz LLM-readiness
- consider holoviz-mcp and use of llms.txt that result from this SDG work
- Working group starting in Jan

- HoloViz-MCP
- Marc welcomes the integration of holoviz-mcp into a holoviz org

- Proposal to join https://www.pyopensci.org/ (Maxime)
- Maxime wants to submit colorcet, datashader, holoviews
- Others suggesting hvPlot (post 1.0 release)
- They asked for suggested reviewers
- Any governance/oversite implicated? No, just state of package recurring reviews

- Community Call next week (Wednesday 9am PST, 6pm CET)
- Could continue the conversation about Lumen roadmap if interested users join
- Other HoloViz Project Roadmaps will be created/refreshed by the community call

- Panel downloads have quadrupled in a few months

- Repo/Org reorganizing
- Philipp decided to keep panel-extensions org
- We need to revisit and continue the agreed migration

---

# 2025-12-02 HoloViz Meeting

**Attendees:** Andy, Philipp, Jim, Jean-Luc, Mateusz, Simon, Andrew, Dawn

## Steering Committee Updates

- Sophia has been on maternity leave
- Back soon
- Scott has moved to a new job
- No longer active Panel user
- Should find a replacement

## Outreach & Conferences

- Jim to submit to PyTexas
- Philipp to submit to PyConDE
- Potentials:
- PyCon US (Long Beach, CA)
- PyData London
- JupyterCon
- PyCon Italia
- SciPy in July (Minneapolis)
- PyData Seattle
- FOSS4G Hiroshima (August 2026)
- ACM Supercomputing - Belfast
- Brainstorm for Lumen AI
- Data Analytics audience
- AI Week in SF (Nov 2026)

## Core Packages

### Bokeh
- Next release 3.9
- Technical difficulties have led to delay
- Postponed to early January

### Panel
- Next release 1.8.4
- Mostly bug fixes
- RC0 is out
- Add warning about dropping pandas dep to changelog
- Panel 1.9.0 planning
- Dropping pandas
- Moving from Widget.name -> Widget.label
- Moving towards more solidly building on panel-material-ui
- v2 namespace?
- Update the examples
- Link in the panel-material-ui reference docs

### Lumen
- Working towards merging of the massive API and UI refactor
- Andrew working on discovery tools for finding tables in big databases

### HoloViews
- Patch release 1.22.1 coming up after Philipp reviews a couple of PRs

### hvPlot
- Patch release coming soon once Maxime updates the roadmap

### Param
- Patch release 2.3.1 out, 2.3 blog post out
- Philosophical discussion: https://github.com/holoviz/param/issues/701

### Datashader
- Release 0.19.0 coming up after some PR reviews

### GeoViews
- Latest release 1.15.0 includes windbarb support

### Colorcet
- Holding pattern

# 2025-11-18 HoloViz Meeting

**Attendees:** Demetris, Andy, Philipp, Isaiah, Maxime, Jim, Jean-Luc, Mateusz, Simon, Philipp A (scverse), Dawn, Daina (Anaconda, devrel)

## General HoloViz Agenda Items

### Versioning
- Version dropdown in Param should be applied to the rest
- HoloViz repo has a wiki page documenting this
- Next step: Panel

### Announcements

### Outreach, Conferences, Meetings
Community call
- Goal: bring contributors, available for questions, learn about users
- Will be sending out public announcement for community call in Dec
- Discourse, Discord, LinkedIn
- Website(s) banner (all at once, needs some infra work)
- ics cal event link to share
- On call, ask how people found out
- Dawn suggets also: bluesky, mastadon
- Prep roadmap slide per core project
- Maxime: We should plan on recurring calls to gain momentum. We should all be more active on discord.
- Daina: ensure the announcement messaging invites our intended audience

SCverse conference
- lumen-anndata poster prez by charlie

1.0 releases
- hvPlot and Datashader announcement coordination with DevRel

## Core Packages

### Bokeh
- Last release (pip, conda-forge, conda-defaults: 3.8)
- Next release 3.9 (Dec)
- Canvas improvements/theming, keyboard bindings
- Dropped Pandas dep
- 3.8.1 released

### Panel
- Last release (pip, conda-forge, conda-defaults: 1.8.3)
- Next releases: 1.9
- name > label for widgets
- pmUI widgets
- Dashboard: tests failing

### Lumen
- Last release (pip, conda-forge, conda-defaults: 0.10.1)
- Next releases:
- Refactoring state code being wrapped up
- Maybe 0.11 or 1.0
- Andrew was working on docs (will return Dec)
- Dashboard: test, docs failing

### HoloViews
- Last release (pip, conda-forge, conda-defaults): 1.22.0
- Next releases:
- 1.22
- Synthetic legend for any categorical
- Filtering to hover tool
- SizeBar
- Narwhals interface merged
- The separate Ibis interface will be deprecated/replaced
- Blog post?
- patch release soon

### hvplot
- Last release (pip, conda-forge, conda-defaults): 0.12.1
- Next releases:
- Patch release upcoming (EOW)
- 1.0 in planning

### Param
- Last release (pip, conda-forge: 2.3.0, defaults: 2.2.1)
- Next release 2.4 (beginning of 2026)
- context manager regression reported
- working on getting 2.3.0 on defaults soon
- blog post
- experimenting with typing PR
- Philipp A: would be helpful to already have the getter of individual params.. so that code that consumes param won't be flagged by type checker
- Philipp R will split out PR

### Datashader
- Last release (pip, conda-forge, conda-defaults: 0.18.2)
- Next release: 1.0
- ~3 PRs for 1.0 in the coming weeks (EOY)

### GeoViews
- Last release (pip, conda-forge: 1.15.0), (defaults: 1.14.1)

### Colorcet
- Last release (pip, conda-forge, defaults: 3.1.0)
- Simon agrees to be maintainer
- Jim added PR to replace Ian with Simon

## HoloViz Extensions, Incubator, Dev --------------------------

### panel-material-ui
- Last release (pip: 0.6.0), (conda-forge: 0.6.0), (defaults: NONE)
- 0.6 upcoming with new components
- breadcrumbs
- num indicator
- Maxime forked feedstock for getting on defaults, in review

### panel-split-js
- Waiting on Panel release

### hv-anndata
- scanpy plots makes a lot of use of Grid layouts
- Grid
- slow
- misalignment
- sizing
- Legends
- move legends for subplots to outer layout
- Mateusz: working on layout changes to make this possible in Bokeh
- scanpy plots project board: https://github.com/orgs/holoviz-topics/projects/6
- issues with responsive-1dim + aspect ratio
- Docs are still broken
- https://hv-anndata.readthedocs.io/en/latest/api/hv_anndata.plotting.scanpy.html
- Needs help addressing things that are breaking in the docs

------------------------------------------

# 2025-11-04 HoloViz Meeting

**Attendees:** Demetris, Andy, Philipp, Simon, Mateusz, Isaiah, Philipp A (scverse), Maxime

## General HoloViz Agenda Items --------------------------

### Announcements

### Outreach, Conferences, Meetings

Chris Akiki asking for Datashader channel on Discord
- We don't have any library-specific user channels yet.. just topics

Added Archive Category on Discord.. moving a channel there gives you option to sync permissions to the Category, which will restrict it's visibility to non-users

Community Call proposed on Discord. Dec 17th? Agenda?
- Maybe don't make it about contributing
- Simon: people may not care much about roadmaps
- Compromise.. let's have the roadmaps prepared but not have a hard-agenda to present them

Outreach Tracker (idea from Andrew)
- https://docs.google.com/spreadsheets/d/1WZYyinySs-4-SnZ-EN6cWxJXwhavf-IJWDpX2wwPBqU/edit?gid=0#gid=0

## Core Packages

### Bokeh
- Last release (pip, conda-forge, conda-defaults: 3.8)
- Next release 3.9 (est. 1-2 months)
- Canvas improvements/theming, keyboard bindings
- Dropping Pandas dep

### Panel
- Last release (pip, conda-forge, conda-defaults: 1.8.2)
- Next releases: 1.8.3, maybe 1.9 (EOW)
- Dashboard: tests failing

### Lumen
- Last release (pip, conda-forge, conda-defaults: 0.10.1)
- Next releases:
- Refactoring state code being wrapped up
- Maybe 0.11 or 1.0
- Andrew was working on docs (will return Dec)
- Dashboard: docs failing

### HoloViews
- Last release (pip, conda-forge, conda-defaults): 1.21.0
- Next releases:
- RC released
- Next release next week
- 1.22 plans
- Synthetic legend for any categorical
- Filtering to hover tool
- SizeBar
- Narwhals interface merged
- The separate Ibis interface will be deprecated/replaced
- Blog post?

### hvplot
- Last release (pip, conda-forge, conda-defaults): 0.12.1
- Next releases:
- Patch release upcoming
- Waiting for Param release, then will return to docs

### Param
- Last release (pip, conda-forge, defaults: 2.2.1)
- Next release 2.3 - rc by EOW, final release next week
- default factoring, param attrbs
- Metadata PR next
- Maxime reviewing old PRs, milestone ready
- Philipp's descriptor factory typing system PR, then TypedParameterized
- Philipp PR for param ref resolving in progress

### Datashader
- Last release (pip, conda-forge, conda-defaults: 0.18.2)
- Next release:
- 0.19 or 0.18.3: QuadMeshRectilinear work
- Needs a release soon, after HoloViews release

### GeoViews
- Last release (pip, conda-forge: 0.14.1), (defaults: 0.14.1)
- release after HoloViews

### Colorcet
- Last release (pip, conda-forge, defaults: 3.1.0)

## HoloViz Extensions, Incubator, Dev --------------------------

### panel-material-ui
- Last release (pip: 0.5.0), (conda-forge: 0.5.0), (defaults: NONE)
- 0.6 upcoming with new components
- breadcrumbs
- num indicator

### panel-split-js
- Waiting on Panel release

### hv-anndata
- HoloViz-Anndata Bridge
- A lot of progress being made
- Test with HoloViews 1.22 rc
- Docs are still broken
- https://hv-anndata.readthedocs.io/en/latest/api/hv_anndata.plotting.scanpy.html
- Philipp R is going to take a looks at the docs soon
- scanpy plots project board: https://github.com/orgs/holoviz-topics/projects/6
-

---

# 2025-10-21 HoloViz Meeting
**Attendees:** Demetris, Andy, Philipp, Simon, Jim, Jean-Luc, Andrew, Mateusz, Isaiah

## HoloViz Core and Bokeh

### Bokeh
- Last release (pip, conda-forge, conda-defaults: 3.8)
- Next release 3.9 (est. 1-2 months)
- Canvas improvements/theming, keyboard bindings

### Panel
- Last release (pip, conda-forge, conda-defaults: 1.8.2)
- Next releases: 1.8.3 (sometime next week)
- Dashboard: tests failing

### Lumen
- Last release (pip, conda-forge, conda-defaults: 0.10.1)
- Next releases:
- lumen dev meeting for milestones
- Project board created
- Refactoring state code
- Maybe 0.11 or 1.0
- Lumen UX meeting soon.. DR will reschedule
- Who is the Lumen audience?
- Dashboard: docs failing

### HoloViews
- Last release (pip, conda-forge, conda-defaults): 1.21.0
- Next releases:
- 1.22 plans
- Synthetic legend for any categorical
- Filtering to hover tool
- SizeBar
- Narwhals interface merged
- The separate Ibis interface will be deprecated/replaced
- Dashboard: docs failing

### hvplot
- Last release (pip, conda-forge, conda-defaults): 0.12.1
- Next releases: Unclear

### Datashader
- Last release (pip, conda-forge, conda-defaults: 0.18.2)
- Next release:
- 0.19 or 0.18.3: QuadMeshRectilinear work
- Needs a release soon
- What's the nature of dependency/usage with earthmover?
- blog post: https://earthmover.io/blog/dynamic-map-tile-rendering-icechunk-zarr-data-xpublish-tiles/
- TODO: let's meet with Earthmover/Deepak(?)
- Dashboard: docs failing

### Param
- Last release (pip, conda-forge, defaults: 2.2.1)
- Next release 2.3
- Smaller release might happen
- Maxime reviewing old PRs, getting milestone ready
- Philipp's descriptor factory typing system PR, then TypedParameterized

### GeoViews
- Last release (pip, conda-forge: 0.14.1), (defaults: 0.14.0)
- Dashboard: packages, docs failing
- Wind barbs w Bokeh implemented, copiloted-assisted
- Glyph implementation outside of Bokeh, how tightly to pin Bokeh
- Mateusz: looks fine
- TODO: Andrew get geoviews updated on defaults.. Maxime has a guidance doc on this

### Colorcet
- Last release (pip, conda-forge, defaults: 3.1.0)

## HoloViz Extensions, Incubator, Dev --------------------------

### panel-material-ui
- Last release (pip: 0.5.0), (conda-forge: 0.5.0), (defaults: NONE)

### panel-split-js
- Split pane components from Lumen UI
- Allows for airgapped lumen

## General HoloViz Agenda Items --------------------------

### Announcements

### Outreach, Conferences, Meetings
- HoloViz Steering Comm Meeting being planned for Q4
-

### LLM/Copilot usage
- How should the HoloViz team use LLMs/GitHub Copilot for code contributions?
- Andrew:
- Finds Copilot valuable for brainstorming/exploring codebases and understanding context; open to not using Copilot-generated PRs as final PRs
- Maxime:
- Doesn't want to review LLM-authored PRs; prefers local LLM tools (Claude Code, Cursor) where humans commit the code in their own name rather than Copilot opening PRs directly. Review experience: AI-generated code felt "LLM-y," made him more demanding in review
- Jim/Philipp:
- Team members can use LLMs as tools, but members must be listed as PR authors and vouch for every line
- TBD: is copilot the committing author for squashed/merged PRs.. ideally it would at least co-authored with the person

--------------------------

# 2025-10-07 HoloViz Meeting
**Attendees:** Demetris, Andy, Philipp, Simon, Jim, Jean-Luc, Andrew, Mateusz

## HoloViz Core and Bokeh

### Bokeh
- Last release (pip, conda-forge, conda-defaults: 3.8)
- Upcoming release 3.8.1
- adressing regressions (1-2 weeks)
- Next release 3.9 (est. 1-2 months)
- Canvas improvements/theming, keyboard bindings

### Panel
- Last release (pip: 1.8.2, conda-forge: 1.8.1, conda-defaults: 1.7.5)
- Next releases:
- 1.8.2 released!
- tabulator issues
- pyodide fixes
- deployment docs
- uv docs

### Lumen
- Last release (pip, conda-forge, conda-defaults: 0.10.1)
- Next releases:
- 0.11.0 dev released
- lumen dev meeting 0.11.0/1.0 for milestones on thursday
- Lumen UX meeting in 2 weeks
- preliminary support for xarray & sql: https://github.com/alxmrs/xarray-sql, https://github.com/holoviz/lumen/pull/1434
- Dashboard: tests, docs failing

### HoloViews
- Last release (pip, conda-forge, conda-defaults): 1.21.0
- Next releases:
- 1.22 plans
- Synthetic legend for any categorical
- Filtering to hover tool
- SizeBar
- Narwhals interface merged
- The separate Ibis interface will be deprecated/replaced

### hvplot
- Last release (pip, conda-forge, conda-defaults): 0.12.1
- Next releases: Unclear
- Docs status? Should be resuming now
- Dashboard: tests failing

### Datashader
- Last release (pip, conda-forge, conda-defaults: 0.18.2)
- Next release:
- 0.19 or 0.18.3
- QuadMeshRectilinear work
- awaiting anything?
- a couple PRs finishing up
- Dashboard: tests failing

### Param
- Last release (pip, conda-forge, defaults: 2.2.1)
- Next release 2.3
- Maxime reviewing old PRs, getting milestone ready
- docstring improvements
- metadata slot to parameter
- Philipp's descriptor factory typing system PR, wrapping up soon? then TypedParameterized
- Will continue work next week
- Simon's LSP demo
- How to distribute this?
- pip, vscode extensions market
- Do you need to start the server?
- It's just a pip package so if you install the extension in vscode then the extension should find this package entry point
- pycharm, spyder, neo-vim, emacs, etc have
- resources:
- https://github.com/hoxbro/param-lsp
- https://microsoft.github.io/language-server-protocol/
- another example of an lsp for a dsl is `stan`

### GeoViews
- Last release (pip, conda-forge: 0.14.0), (defaults: 0.14.1)
- Dashboard: tests failing

### Colorcet

## HoloViz Extensions, Incubator, Dev

### hvsampledata

### holonote

### panel-material-ui
- Last release (pip: 0.5.0), (conda-forge: 0.5.0), (defaults: NONE)

## General HoloViz Agenda Items

### Announcements
- Python 3.14 coming out today
- pyopensci: https://www.pyopensci.org/how-to-submit-a-package-to-pyopensci.html
- let's submit datashader, colorcet, holoviews

### HoloViz takeaways from team meeting
- Project Roadmaps needed
- Low/No-cost quarterly meeting in/around Berlin

### Outreach

### Conferences

### Meetings
- HoloViz Steering Comm Meeting being planned for Q4

### Coding
- copilot usage for certain PRs. For instance: https://github.com/holoviz/holoviews/pull/6698
-

---
# 2025-09-23 HoloViz Meeting
**Attendees:** Demetris, Andy, Philipp, Isaiah, Simon, Maxime, Jim, Jean-Luc, Andrew, Mateusz, Dawn

## Core Packages

### Bokeh
- Last release (pip, conda-forge: 3.8, defaults: 3.8)
- Upcoming release 3.8.1
- adressing regressions (1-2 weeks)
- Next release 3.9 (est. 1-2 months)
- CZI R6 restarting: Canvas improvements/theming, keyboard bindings

### Panel
- Last release (pip: 1.8.1, conda-forge: 1.8.1, defaults: 1.7.5)
- Next releases:
- 1.8.2 later this week
- tabulator issues
- No 1.9 milestone yet
- Dashboard: tests failing

### Lumen
- Last release (pip, conda-forge: 0.10.1), (defaults: 0.9.0)
- Next releases:
- 0.11.0 dev released
- new UI
- Report view
- Optimize/monitor token usage
- lumen dev meeting to determine inclusion 0.11.0 next week
- Dashboard: docs failing

### HoloViews
- Last release (pip, conda-forge, defaults): 1.21.0
- Next releases:
- 1.22 plans
- Synthetic legend for any categorical
- Filtering to hover tool
- SizeBar
- Narwhals interface merged
- The separate Ibis interface will be deprecated/replaced

### hvplot
- Last release (pip, conda-forge, defaults): 0.12.1
- Next releases:
- Docs status?
- Paused for sept.. resuming in 2 weeks

### Datashader
- Last release (pip, conda-forge: 0.18.2), (defaults: 0.18.2)
- Next release (Simon):
- 0.19
- awaiting external contributor wrapup of a quadmesh PR
- added benchmark to CI

### Param
- Last release (pip, conda-forge, defaults: 2.2.1)
- Philipp's Typing draft PR: https://github.com/holoviz/param/pull/1066
- parameters from type annotations, typed parameterized
- Simon has been working on an LSP (for neovim) for Param to enable auto-completion and (hopefully) reactive expression guidance
- Tests failing
- Next release 2.3
- Maxime reviewing old PRs, getting milestone ready
- docstring improvements
- metadata slot to parameter

### GeoViews
- Last release (pip, conda-forge: 0.14.0), (defaults: 0.14.1)
- Tests, Docs are Failing.

### [panel-material-ui](https://github.com/panel-extensions/panel-material-ui)
- Last release (pip: 0.5.0), (conda-forge: 0.5.0), (defaults: NONE)

### Others: Colorcet, hvsampledata, etc

## General HoloViz

## Meetings
- HoloViz/Anaconda team on-site coming up next week
- Any public shareable outcome? Probably not
- Simon will set up Panel-only meeting
- Will experiment with a community call sometime in Q4
- goal: try to attract contributors

### Conferences
- Charlie scverse conference Nov 17-19 (lumen-anndata)
- Dawn attending:
- PyData Vermont Burlington, VT, USA 2025-10-21 2025-10-22
- PyTorch Conference San Francisco, CA, USA 2025-10-22 2025-10-23
- JupyterCon 2025 San Diego, CA, USA 2025-11-04 2025-11-05
- PyLadiesCon 2025 Virtual 2025-12-05 2025-12-07
- PyData NYC 2025 Boston Boston, MA USA 2025-12-08 2025-12-10
- Maxime will be on Python Exchange Podcast on Wed to discuss Diataxis
- Maxime PyCon France talk rejected

### NF SDG
- Next SDG: Proposal Submission Deadline: Oct 10
- Please provide feedback on Isaiah's [draft](https://docs.google.com/document/d/1ZVn6YH4cPRs-u8oQ3ZhBEIuvK3l9iFztad7gDIeMQOM/edit?tab=t.0#heading=h.jn4fuqoc1bcw)

### Outreach
- Andrew will publish/schedule 3-4 blog posts for lumen in Q4
- Maxime will finish up hvPlot docs overhaul in Q4
- NF SDG for llm ingestion
- Maxime on podcast

---

# 2025-09-09 HoloViz Meeting
**Attendees:** Demetris, Andy, Jean-Luc, Philipp, Isaiah, Simon, Maxime, Jim, Jean-Luc, Andrew

## Core Packages

### Bokeh
- Last release (pip, conda-forge: 3.8, defaults: 3.8)

### Panel
- Last release (pip: 1.8, conda-forge: 1.7.5, defaults: 1.7.5)
- Next releases:
- Dashboard: tests failing

### Lumen
- Last release (pip, conda-forge: 0.10.1), (defaults: 0.9.0)
- Next releases:
- 0.11.0 dev released
- new UI
- Optimize/monitor token usage
- TODO: needs lumen dev meeting to determine inclusion
- Dashboard: docs failing

### HoloViews
- Last release (pip, conda-forge, defaults): 1.21.0
- Next releases:
- 1.21.1
- Synthetic legend for any categorical
- Filtering to hover tool
- SizeBar
- 1.22 plans
- Narwhals interface merged
- Simon will request for testing and feedback
- Bokeh already supports narwhals
- The separate Ibis interface will be deprecated/replaced
- anndata interface integration is progressing
- Last meeting: Philipp raised point about performance issues with datashading (via holoviews) categorical aggregates..
- Any decision made about limiting data sent to the front end?
- Philipp suggests max width/height in rasterize
- Limits: wire bandwidth, computation at frontend, shade on backend
- Let's issue warnings?
- Maxime: maybe we should warn in hvPlot instead of HoloViews based on the target userbase
- Jim: warn in HoloViews, auto-downscale in hvPlot

### hvplot
- Last release (pip, conda-forge, defaults): 0.12.1
- Next releases:
- Will add Narwhals support after HoloViews completes task
- Simon has a testing PR in hvPlot

### Datashader
- Last release (pip, conda-forge: 0.18.2), (defaults: 0.18.2)
- Next release (Simon):
- quadmesh PR optimization
- added benchmark to CI

### Param
- Last release (pip, conda-forge, defaults: 2.2.1)
- Philipp's Typing draft PR: https://github.com/holoviz/param/pull/1066
- Next release 2.3
- will not include typing
- Maxime will target a release this month to include:
- docstring improvements
- metadata slot to parameter

### GeoViews
- Last release (pip, conda-forge: 0.14.0), (defaults: 0.14.1)

### [panel-material-ui](https://github.com/panel-extensions/panel-material-ui)
- Last release (pip: 0.4.0), (conda-forge: 0.4.0), (defaults: NONE)
- Next release:
- 0.5 coming with new panel and bokeh releases

### Others: Colorcet, hvsampledata, etc

## General HoloViz

### Conferences
- Maxime diataxis PyData talk and conference recap
- Narwhals claims to have some performance improvement over native polars usage
- Contacted by (Python Exchange) podcast to discuss diataxis
- polars expressions.. has some relation to rx and dim expressions

### NF SDG
- Last SDG
- just ran out of funding/time
- didn't complete the hvPlot docs
- will continue to work via OSS time
- Target EOY for completion
- API reference is a huge win
- versioned docs and hvsampledata more big wins
- Next SDG: Proposal Submission Deadline: Oct 10
- Please provide feedback on Isaiah's [draft](https://docs.google.com/document/d/1ZVn6YH4cPRs-u8oQ3ZhBEIuvK3l9iFztad7gDIeMQOM/edit?tab=t.0#heading=h.jn4fuqoc1bcw)

### Outreach
- We need to do more
- Relying a lot on 1-2 people
- idea: sprint to collect catalogue of posts that can be scheduled
- Dawn could help with content strategy.. we should meet with her regularly
- We should ask NumFOCUS to give out individual Holoviz repo swag
- Our platforms of focus are currently twitter/X and LinkedIn
- Andrew: some behind-the-scenes blog posts are really helpful, e.g. Matt Rocklin's

## Meetings
- Last time, Simon suggested having a Panel-only meeting, was this set up? Not yet
- Will experiment with a community call sometime in Q4
- goal: try to attract contributors

# 2025-08-26 HoloViz Meeting
**Attendees:** Demetris, Andy, Jean-Luc, Philipp, Isaiah, Simon, Mateusz, Maxime, Jim, Andrew

## Core Packages

### Bokeh
- Next release 3.8:
- rc released last week
- TODO: Mateusz will get 3.7 onto defaults after the upcoming rc release
- working on config of Document, for e.g. disabling notifs, etc
- one other bug exporting sizebar
- next rc anticipated today

### Panel
- Last release (pip, conda-forge: 1.7.5), (defaults: 1.7.0)
- Next releases:
- 1.8.0 dev released
- Will release shortly after 3.8
- Reconnect behavior
- Dashboard: tests failing

### Lumen
- Last release (pip, conda-forge: 0.10.1), (defaults: 0.9.0)
- Next releases:
- 0.11.0 dev released
- new UI
- TODO: needs lumen dev meeting to determine inclusion
- goal is to use less tokens
- eval for logfire (logging service)
- vegalite agents
- Dashboard: docs failing

### HoloViews
- Last release (pip, conda-forge, defaults): 1.21.0
- Next releases:
- 1.21.1
- Synthetic legend for any categorical
- Filtering to hover tool
- SizeBar
- waiting on Bokeh 3.8, then Panel release

### hvplot
- Last release (pip, conda-forge, defaults): 0.12.0
- Next releases:
- 1.12.1
- Maxime reviewing Isaiah's docs PRs
- Let team know if people notice docs issues

### Datashader
- Last release (pip, conda-forge: 0.18.2), (defaults: 0.18.0)
- Philipp: Performance issues with categorical aggregates..
- The rasterize approach is unusable bc sending N cats to the front end. Shade op can take tens of seconds.
- Makes many apps unusable on a high-end display
- Should we limit data sent to the front end?
- TBD

### Param
Last release (pip, conda-forge, defaults: 2.2.1)
- Any path forward for typing? Low priority, huge lift
- Philipp's Typing draft PR: https://github.com/holoviz/param/pull/1066
- Philipp A from scverse had started a similar PR without knowing about Philipp's: https://github.com/holoviz/param/pull/1070

### [panel-material-ui](https://github.com/panel-extensions/panel-material-ui)
- Last release (pip: 0.4.0), (conda-forge: 0.4.0), (defaults: NONE)
- 0.5 coming with new panel and bokeh releases

### GeoViews
- Released 1.14.1
- Dashboard: docs failing

### Others: Colorcet, hvsampledata

## General HoloViz

### Conferences
- JupyterCon CFP rejected
- Maxime submitted diataxis talk to PyCon France
- PyData Berlin in 1 week

### NF SDG
- Proposal Submission Deadline: Aug 29

## External Ecosystem

## Feedback:
Marc:
- LLMs don't help with our material
- This is also a big pain point for Rich
- Rich suggested looking at Dask's slackbot use of RunLLM
- Serialization
- Param typing
- Data backends (polars, etc)
- Communications
- Simon thinks this is a big issue as well.. e.g. not going to many conferences, not announcing things well
- We don't explain 'why' to use holoviz
- He doesn't understand the direction with Lumen
- Not playing nicely with some important external tools
- Conda is a problem
- Hard to build community without easy deployment
Rich:
- LLMs don't help with our material (tried to create Panel app w Gemini)
- suggested looking at Dask's slackbot use of RunLLM
- Deployment is hard. Uses huggingface sometimes, but not easy.
Jim:
- Easy onboarding for new users
- Ugly apps, hard to make look good
Dharhas:
- With Panel, hard to debug interactions for more complex apps
- For next Steering comm call, come up with ranking and answer to this feedback... maybe turn this into a blog post (after we have some answers)

## Meetings
- Simon suggests having a Panel-only meeting
- Experimenting with a community call

---

# 2025-08-22 HoloViz Steering Committee Meeting
Attendees: Jim, Philipp, Maxime, Andy, Isaiah, Mateusz, Andrew, Demetris, Dharhas,

## Action Items:
- Philipp/Jim/Others?: Meet with Dharhas' team re: their pain points
- Philipp/Andrew/Demetris/Others?: Put together Lumen Roadmap
- Demetris: Experiment with a community support meeting in October and a Discourse, could be a discussion about Lumen Roadmap if Dharhas' team joins
- DONE: Demetris: Ask absent steering committee members for their input
- Isaiah: Help us determine how HoloViz is doing. Brainstorming: incorporate usage/stars/doc-visits/etc summary metrics into holoviz-insights, add comparisons/rankings to other relevant packages, some indicator of social media mentions
- Demetris/Philipp: Discuss Panel-extensions

## Agenda:
- Repo/Org reorganizing
- Reaching final consensus: https://github.com/holoviz/holoviz/issues/432#issuecomment-3214764098
- New incubator repos: holoviz-mcp, holoviz-insights
- [holoviz-mcp](https://github.com/MarcSkovMadsen/holoviz-mcp): RAG-based holoviz docs
- [holoviz-insights](https://github.com/Azaya89/holoviz-insights): Project health dashboard, internal dev tool
- Increasing non-Anaconda board involvement
- Dharhas'
- Experiencing significant internal pushback on Panel usage
- Use case is building something for a client, which is intended to become more production-ready
- Styling has historically been an issue
- Hard to debug interactions for more complex apps
- Current large gov project based on Panel, will hire someone to identify pain points, evaluate whether they can fix wit Panel or switch to React of HTMX.
- May not know about HTMX yet to understand if it's suitable
- React is a pain for other reasons
- TODO: Need to have a deep dive meeting (w Philipp R) to understand pain points
- Dharhas may have an internal use for Lumen, would benefit from knowing more about Lumen's Roadmap
- Dharhas may have some flexibility soon that could increase maintenance support for HoloViz
- Thought leadership, goals, roadmapping
- Need to engage steering members more
- Should we have a recurring community support meeting?
- Let's experiment with a meeting in October
- How is HoloViz doing in terms of usage/popularity?
- Mostly anectodal feelings
- Jim has some concern based on slightly fewer website visits
- Few new contributors, but this has been consistent
- But...highest ever monthly downloads for Panel (~2m total across pip and Panel)
- What can we do about this?
- How to find ground truth? We can attempt to verify if there are any trends in usage
- How to determine which actions we can take?
- Marketing?
- External ecosystem analysis..
- what are people using? e.g. Marimo, etc

Next time: focus on Lumen Roadmap

---

# 2025-08-12 HoloViz Meeting
**Attendees:** Demetris, Andy, Jean-Luc, Philipp, Isaiah, Jim, Simon, Andrew, Mateusz

## Core Packages

### Bokeh
- Next release 3.8:
- Addressing issues from SizeBar PR review
- This is the last thing to figure out before release

### Panel
- Last release (pip, conda-forge: 1.7.5), (defaults: 1.7.0)
- Next releases:
- 1.8.0
- Bokeh 3.8, reconnection system
- Will release shortly after 3.8
- Simon to follow up with Mateusz today about Bokeh release
- pypi-stats has been down for a week, unmaintained
- Dashboard: Packages failing, no status for docs, tests

### Lumen
- Last release (pip, conda-forge: 0.10.1), (defaults: 0.9.0)
- Next releases:
- 0.11.0
- Working on SQL agent improvements
- new UI
- UI/UX being worked on by designer (Krissy)
- Milestones being drawn up
- Reports feature in development
- input file in text box area
- Dashboard: docs failing

### HoloViews
- Last release (pip, conda-forge, defaults): 1.21.0
- Next releases:
- 1.21.1 (soon)
- Synthetic legend for any categorical
- Filtering to hover tool
- SizeBar
- waiting on Bokeh 3.8, then Panel release

### hvplot
- Last release (pip, conda-forge, defaults): 0.12.0
- 0.12.0
- Next releases:
-

### Datashader
- Last release (pip, conda-forge: 0.18.2), (defaults: 0.18.2)
- quadmesh issue resolved and released
- xarray group filed a new issue
- Andy and Simon to pair on this

### Param
Last release (pip, conda-forge: 0.18.2), (defaults: 0.18.2)
- Typing draft PR: https://github.com/holoviz/param/pull/1066

### [holoviz-mcp](https://github.com/MarcSkovMadsen/holoviz-mcp)
- At some point, integrate into a HoloViz org

### [panel-material-ui](https://github.com/panel-extensions/panel-material-ui)
- Last release (pip: 0.4.0), (conda-forge: 0.4.0), (defaults: NONE)
- 0.4.1 soon, addressing some issues

### GeoViews
- Release this week: 1.14.1
- update to cartopy that broke maps.. dynamically updates crs when loading data

### Others: Colorcet, hvsampledata, GeoViews

## General HoloViz

### Conferences
- JupyterCon CFP submitted on Lumen in JupyterLab
- Maxime submitted diatixis talk to PyCon France, PyData Global

### NF SDG
- Proposal Submission Deadline: Aug 29
- Maybe about improving AI-docs..
- markdown version of each doc website
- improving MCP server

### Meetings
- Next steering committee meeting August 22nd:
- Repo/Org reorganizing.. incorporating holoviz-mcp, holoviz-insights
- Increasing non-Anaconda board activity
- Thought leadership, goals, roadmapping
- Need to engage steering members more
- Certain metrics indicate potential issues
- Slightly fewer website visits
- Few new contributors, but this has been consistent
- What can we do about this?
- External ecosystem analysis..
- what are people using? e.g. Marimo, etc

## External Ecosystem
### Marimo
- HoloViz works here
- Gaining users

### Jupyter
- Anaconda is looking to hire a Jupyter maintainer

### Dask
- Dask is on skeleton maintenance mode
- dask-expr
- cubed is gaining traction
- Ray is another option

---

# 2025-07-29 HoloViz Meeting
**Attendees:** Demetris, Marc, Andy, Jean-Luc, Philipp, Mateusz, Andrew, Maxime, Isaiah

### Bokeh
- Next release 3.8:
- Session reconnect
- hit filtering
- side panel
- maybe layout improvements
- RC out soon

## Core Packages

### Panel
- Last release (pip, conda-forge: 1.7.5), (defaults: 1.7.0)
- 1.7.5: Security issue addressed, no CVE. (jinja injection)
- Next releases:
- 1.8.0
- Bokeh 3.8
- Reconnection system
- Might help with datashader timeout
- First time it had 100k downloads in a day
- Dashboard: Tests failing

### Lumen
- Last release (pip, conda-forge: 0.10.1), (defaults: 0.9.0)
- Next releases:
- 0.11.0
- Working on SQL agent improvements
- new UI
- UX being worked on by UX designer
- Milestones being drawn up
- Dashboard: Tests failing

### HoloViews
- Last release (pip, conda-forge, defaults): 1.21.0

### hvplot
- Last release (pip, conda-forge, defaults): 0.11.3
- Next releases:
- 0.12.0 (EOW)
- Working on docs
- Docs versioning is complete
- Notes here: https://github.com/holoviz/holoviz/wiki/Website-Versioning

### Datashader
- Last release (pip, conda-forge: 0.18.1), (defaults: 0.18.0)
- Quadmesh issue debugging: https://github.com/holoviz/datashader/issues/1431
- Andy may collab with Thuy in coming days

### Param
- Typing
- Philipp has draft PR: https://github.com/holoviz/param/pull/1066
- success heuristics: does it return correct type, does the signature display
- Maxime could contribute early Sept

### Geoviews
- Dashboard: Tests failing

### [holoviz-mcp](https://github.com/MarcSkovMadsen/holoviz-mcp)
- Performance vs https://github.com/mufeedvh/code2prompt?
- Waiting for Marc for demo

### [panel-material-ui](https://github.com/panel-extensions/panel-material-ui)
- Last release (pip: 0.3.3), (conda-forge: 0.3.1), (defaults: NONE)
- 0.4.0 release coming soon
- Default sizing is larger than Panel components.. may need to adjust

### Others: Colorcet, hvsampledata

## General HoloViz

### Conferences
- JupyterCon CFP submitted on Lumen in JupyterLab
- Consider PyData Global deadline Aug 6 (December 9-11, 2025)
- Maxime submitted diatixis talk to PyCon France, PyData Global

### NF SDG
- Proposal Submission Deadline: Aug 29
- Maybe about improving AI-docs..
- markdown version of each doc website
- improving MCP server

### Meetings
- Next steering committee meeting in August 22nd

---

# 2025-07-15 HoloViz Meeting
**Attendees:** Demetris, Andy, Jean-Luc, Philipp, Mateusz, Jim, Andrew, Maxime, Isaiah,

## Core Packages

### Panel
- Last release (pip, conda-forge: 1.7.4), (defaults: 1.7.0)
- Release notes for 1.7.4?
- Next releases:
- 1.7.5
- to address medium vulnerability found in templates
- 1.8.0 in a couple of weeks
- Dashboard: Tests failing

### Lumen
- Last release (pip, conda-forge: 0.10.1), (defaults: 0.9.0)
- PMui merged
- Next releases:
- 0.11.0
- Working on SQL agent improvements
- new UI
- AH: Outstanding task to update Lumen CHANGELOG/release notes

### HoloViews
- Last release (pip, conda-forge, defaults): 1.21.0
- JLS: check if there's an issue for "Archive functionality should at least mention in the docs if it can't support JupyterLab"

### hvplot
- Last release (pip, conda-forge, defaults): 0.11.3
- Next releases:
- 0.12.0
- Working on docs
- Docs versioning, also experimenting with nbsite

### Datashader
- Last release (pip, conda-forge: 0.18.1), (defaults: 0.18.0)

### Param
- Multiple attempts at Typing in param (most recently [Marc](https://github.com/holoviz/param/pull/1065))
- Philipp suggested in PR about starting from where Simon [left off](https://github.com/holoviz/param/pull/985)
- Trailets may be a good model.. separate overloads for allow_none cases
- Maxime could start early Sept (Philipp may address before)

### Geoviews, Colorcet, hvsampledata

## Other Packages

### [holoviz-mcp](https://github.com/MarcSkovMadsen/holoviz-mcp)
- Performance vs https://github.com/mufeedvh/code2prompt?
- Waiting for Marc for demo

### [panel-material-ui](https://github.com/panel-extensions/panel-material-ui)
- Released 0.3.0 July 11th
- New release this week

## General HoloViz

### Conferences
- PyData Berlin (Maxime, early Sept)
- hvPlot docs diataxis process
- JupyterCon CFP (Nov) brainstorming
- Maybe lumen export to notebook
- Brainstorming extension in Jlab pane to interact with lumen
- SciPy recap (Andrew)
- Xarray
- Xarray promoted their releases well, compared to HoloViz
- flexible indexes; slice using units
- Datatree merged..
- TODO: DR: update multichannel timeseries example to import xarray datatree directly
- Xarray for biology.. why use is low? They hypothesize that it's the lack of relevant examples/guidelines
- VirtualiZarr (user friendly kerchunk)
- Might be useful for anndata remote access
- LLM interfaces
- Shiny has a Lumen-equivalent.. lots of interest
- https://jcheng.shinyapps.io/sidebot/
- The simplicity of the chat flow can be inspiration
- Validation concerns we can address with Lumen
- Maybe host a lumen deployment on Gemini?? or???
- DuckDB-dependent version will probably not be WASM based; feature limitations of pyodide compiled DuckDB

### NF SDG
- Proposal Submission Deadline: Aug 29

### Meetings
- Next steering committee meeting sometime in August. Topics?
- DR will draft a proposal based on the HoloViz Repo ReOrg outline for steering committee meeting and then start executing on the plan if there's consensus.

### Status Dashboard Interim updates
- Isaiah (?):
- Add last release dates
- Add panel-material-ui

### Setting up repos
- Only one copier template process (for panel extensions)
- Other repo's have been set up differently
- let's converge on an approach, especially for the HoloViz-maintained packages.. so (DR) add some specific infra requirements to the ReOrg proposal: github workflows, etc

---

# Older minutes
pre2025July28 https://hackmd.io/@T8JKEgo2Q9OeQDdEKsP_SQ/BJ-3pSLPxe
2024H1 https://hackmd.io/k1Ulsd2pQ8K42zCtvsoD3Q
2023 https://hackmd.io/5zt05J9nQyGUIgGNs4Jl2w
2021-2022 https://hackmd.io/wp8PI9AjQFesMh31NebQLA
Pre-2020 https://hackmd.io/@holoviz/holoviz2020