fix(docs): pin jupyterlite-pyodide-kernel==0.6.1, matching RTB and bdsim - #72
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Newer jupyterlite-pyodide-kernel releases bundle Pyodide >=0.27.7, which
turned WebAssembly JSPI ("stack switching") on by default. Browsers
without JSPI support (Safari as of 2026-08; Firefox only behind a flag)
either hard-crash the kernel or silently race on cell execution --
confirmed live: the deployed site failed in a browser lacking JSPI
support with "RuntimeError: WebAssembly stack switching not supported".
RTB and bdsim already independently hit and fixed this exact class of
bug by pinning jupyterlite-pyodide-kernel==0.6.1 (Pyodide 0.27.6,
predating the JSPI mechanism entirely). Bringing MVTB in line.
Also re-pins docs/lite/wasm_check's pyodide npm dependency from 314.0.3
to the matching 0.27.6 -- these two pins have to move together, or the
check silently stops representing what the real site actually runs.
Verified: wasm_check passes against the new pin (and still fails
clearly against a deliberately-broken case); built and served the real
site locally with the pin and confirmed live in the same browser that
originally hit the JSPI error -- now reports
"Running in browser using MVTB v2.2.0 with OpenCV 4.11.0" successfully.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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Summary
jupyterlite-pyodide-kernel==0.6.1indocs.yml's "Build JupyterLite site" step. Newer releases bundle a Pyodide runtime (>=0.27.7) that turns WebAssembly JSPI ("stack switching") on by default, which either crashes the kernel or silently races on browsers without JSPI support (Safari as of 2026-08; Firefox only behind a flag).RuntimeError: WebAssembly stack switching not supported in this JavaScript runtime.docs/lite/wasm_check'spyodidenpm dependency from314.0.3to the matching0.27.6— these two pins move together, or the check silently stops representing what the real deployed site runs.Test plan
jupyterlite-pyodide-kernel==0.6.1installs cleanly alongsidejupyterlite-corewasm_checkpasses against the new pinwasm_checkstill fails clearly against a deliberately-broken case (tqdm removed from seed list) with the new pinjupyter lite build+jupyter lite serve)Running in browser using MVTB v2.2.0 with OpenCV 4.11.0🤖 Generated with Claude Code