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Align minimum supported dependencies with SPEC 0 - #458

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Sep 6, 2026
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@Zethson Zethson commented Sep 6, 2026

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Applies the SPEC 0 drop schedule as of 2026 Q3, raising the floors to Python 3.12, numpy 2.2, scipy 1.15, pandas 2.3, scikit-learn 1.6 and matplotlib 3.10, and moves CI to the ends of the supported range, 3.12 and 3.14.
The suite passes on both versions, at the new floors and against current releases of every dependency; anndata, formulaic and formulaic-contrasts are not SPEC 0 core packages so their floors are untouched.

SPEC 0 recommends dropping support for Python versions 3 years after their
initial release and for core scientific Python packages 2 years after theirs.
Applying that schedule as of 2026 Q3 raises the floors to Python 3.12, numpy
2.2, scipy 1.15, pandas 2.3, scikit-learn 1.6 and matplotlib 3.10.

Python 3.11 was released in October 2022 and is dropped. anndata, formulaic and
formulaic-contrasts are not SPEC 0 core packages, so their floors are left
alone.

CI now tests the two ends of the supported range, 3.12 and 3.14, rather than
3.11 through 3.13. The suite passes on both, at the new floors and against
current releases of every dependency.

The requirements page still pointed at setup.py for the dependency list; it now
points at pyproject.toml and states the support policy rather than the one-off
note about Python 3.10.

Signed-off-by: Lukas Heumos <lukas.heumos@posteo.net>
@Zethson
Zethson merged commit 78be6d0 into main Sep 6, 2026
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Zethson deleted the spec-0 branch September 6, 2026 19:19
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