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Cut the project over to pixi and drop the conda environments - #117

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jessegrabowski wants to merge 3 commits into
pymc-devs:mainfrom
jessegrabowski:notebook-touchup
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Cut the project over to pixi and drop the conda environments#117
jessegrabowski wants to merge 3 commits into
pymc-devs:mainfrom
jessegrabowski:notebook-touchup

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@jessegrabowski

@jessegrabowski jessegrabowski commented Aug 27, 2026

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Environments were four hand-maintained conda YAMLs that had drifted apart from each other and from the package metadata; they're pixi environments now, defined in pyproject.toml with a committed lock that CI, Read the Docs and local dev all resolve from. The pip extras double as pixi features, which is why the test and lint tool lists have no separate conda table: pip install ".[test]" and pixi run -e test get the same set.

Also swapped the example notebook's progress bar from tqdm to rich. Re-executing it moved its recorded interpreter to the pinned 3.12.

Read the Docs is the one piece not verified locally. It can't resolve a pixi environment, so the build installs pixi and runs the docs task, following pixi's readthedocs-override example. The docs build itself passes; the RTD runner path needs a PR build to confirm.


📚 Documentation preview 📚: https://pytensor-ml--117.org.readthedocs.build/en/117/

The notebook's recorded interpreter moves from 3.14 to 3.12 because re-executing it now happens in the pinned pixi environment rather than an ad-hoc one.
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