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docs: add WASM / Pyodide installation instructions - #3932

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mattijn merged 3 commits into
vega:mainfrom
ArnavTomar18:docs-wasm-install
Dec 29, 2025
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mattijn merged 3 commits into
vega:mainfrom
ArnavTomar18:docs-wasm-install

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@ArnavTomar18

@ArnavTomar18 ArnavTomar18 commented Dec 25, 2025 •

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Summary

This PR adds a short section to the installation documentation describing how to install Altair in WASM-based environments (Pyodide / PyScript) using micropip.

It also documents version pinning and notes limitations around optional dependencies in WASM runtimes.

Closes #3923

@ArnavTomar18 ArnavTomar18 changed the title Docs: add WASM / Pyodide installation instructions docs: add WASM / Pyodide installation instructions Dec 25, 2025
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Thanks for reviewing! This PR adds a WASM / Pyodide installation section as discussed in #3923.
Happy to make adjustments if needed.

@mattijn

mattijn commented Dec 28, 2025

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Great PR @sea-of-codes, thanks for this! Could you please add one or two sentences stating that altair comes with pyodide and that the current version can be found at this url: https://pyodide.org/en/stable/usage/packages-in-pyodide.html, and instead of altair version 5.3.0, can we do version 6.0.0 for the specific approach of installing? Thanks!

@ArnavTomar18

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@mattijn Thanks for the review!
I’ve updated the section to note that Altair is included with Pyodide, added a link to the Pyodide package list, and updated the example version to 6.0.0 as requested.

@mattijn
mattijn enabled auto-merge (squash) December 29, 2025 15:41
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mattijn merged commit 38746b6 into vega:main Dec 29, 2025
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@mattijn

mattijn commented Dec 29, 2025

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Thanks for your PR! Its all good now, thanks @sea-of-codes

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improve docs on installation for wasm environment

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