Install ipywidgets into the image kernel environment - #207
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Three tutorial groups failed verification on the 3.13 rebuild with "IProgress not found": tqdm routes to its widget progress bar inside an IPython session and needs ipywidgets, which Colab preinstalls and the image did not. A user running those notebooks in the container would have hit the same error in JupyterLab. ipywidgets now resolves jointly with the pins alongside ipykernel, matching what the CI harness installs in kernel mode. Verified locally on tutorials-cosyne-2023. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_011NuStoQykizhQCx2KBrMCN
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The post-merge rebuild on the 3.13 base (run 32609809895) failed verification for three tutorial groups (cosyne-2023, neurodatarehack-2024 simple and advanced search) with
ImportError: IProgress not found. The cause is the same one I fixed for the CI harness in #206:tqdmroutes to its widget progress bar inside an IPython session and needsipywidgets, which Colab preinstalls and the image did not. These notebooks previously passed only because their older pin sets happened to pull ipywidgets in transitively.This is a user-facing problem as well as a verification one: JupyterLab in the container would raise the same error for anyone running those notebooks.
ipywidgetsnow resolves jointly with the pins alongsideipykernel, so it is part of the kernel environment the same way it is on Colab, and any conflict with a pin set fails the build rather than silently changing a version.The Dockerfile is part of the build hash, so merging this rebuilds every image; groups already published on 3.13 will rebuild and re-verify but their content does not change. Verified locally by building
tutorials-cosyne-2023and running the verify step as CI does:ok: true, ipywidgets 8.1.9.🤖 Generated with Claude Code
https://claude.ai/code/session_011NuStoQykizhQCx2KBrMCN