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@dstansby
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Now the minimum numpy dependency is 2.0, it seems overkill to have every test run on both NumPy 2.0 and NumPy 2.2. Instead, this removes configuration of numpy in the test matrix, making it simpler in the process.

The minimum version of NumPy is still tested in the min-deps run, and the latest nightly wheel is tested in the upstream test run.

Fixes #3653.

@github-actions github-actions bot added the needs release notes Automatically applied to PRs which haven't added release notes label Jan 15, 2026
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codspeed-hq bot commented Jan 15, 2026

CodSpeed Performance Report

Merging this PR will not alter performance

Comparing dstansby:simplify-np-testing (f47c2bd) with main (7eba7f1)

Summary

✅ 30 untouched benchmarks

@dcherian
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deps=minimal appears to install numpy 2.4.1? example

@dstansby dstansby marked this pull request as ready for review January 15, 2026 18:06
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minimal means the minimum set of dependencies needed to run zarr, not the minimum version of dependencies. In the min_deps environment NumPy 2.0.2 is installed: https://github.com/zarr-developers/zarr-python/actions/runs/21033907878/job/60476604299?pr=3654#step:5:55

@dcherian
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confirmed min_deps installs numpy 2.0.2

@d-v-b d-v-b merged commit 4cddcf5 into zarr-developers:main Jan 15, 2026
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@dstansby dstansby deleted the simplify-np-testing branch January 15, 2026 18:40
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Which versions of numpy do we need to test

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