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Drop Python 3.11 and NumPy <2.0 per SPEC-0 - #834

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d-v-b merged 2 commits into
zarr-developers:mainfrom
maxrjones:spec-0
Apr 2, 2026
Merged

d-v-b merged 2 commits into
zarr-developers:mainfrom
maxrjones:spec-0

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@maxrjones

@maxrjones maxrjones commented Apr 1, 2026 •

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Apply scientific-python SPEC-0 support policy:

  • Python minimum 3.11 -> 3.12 (3.11 released Oct 2022, 3-year window expired)
  • NumPy minimum 1.24 -> 2.0 (1.24 released Dec 2022, 2-year window expired)
  • Zarr test pins 3.1.2/3.1.3 -> 3.0.8/3.1.6 (oldest supported + latest)

TODO:

  • Unit tests and/or doctests in docstrings
  • Tests pass locally
  • Docstrings and API docs for any new/modified user-facing classes and functions
  • Changes documented in docs/release.rst
  • Docs build locally
  • GitHub Actions CI passes
  • Test coverage to 100% (Codecov passes)

Apply scientific-python SPEC-0000 support policy:
- Python minimum 3.11 -> 3.12 (3.11 released Oct 2022, 3-year window expired)
- NumPy minimum 1.24 -> 2.0 (1.24 released Dec 2022, 2-year window expired)
- Zarr test pins 3.1.2/3.1.3 -> 3.0.8/3.1.6 (oldest supported + latest)
@maxrjones maxrjones changed the title Drop Python 3.11 and NumPy <2.0 per SPEC-0000 Drop Python 3.11 and NumPy <2.0 per SPEC-0 Apr 2, 2026
@codecov

codecov Bot commented Apr 2, 2026 •

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (8b882dc) to head (6b855ac).
⚠️ Report is 10 commits behind head on main.

Additional details and impacted files
@@            Coverage Diff            @@
##              main      #834   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           27        27           
  Lines          902       901    -1     
=========================================
- Hits           902       901    -1     
Files with missing lines Coverage Δ
src/numcodecs/checksum32.py 100.00% <100.00%> (ø)
🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

@maxrjones
maxrjones requested a review from a team April 2, 2026 15:08
@d-v-b
d-v-b merged commit 260e658 into zarr-developers:main Apr 2, 2026
38 checks passed
@maxrjones maxrjones self-assigned this Apr 6, 2026
d-v-b added a commit to d-v-b/numcodecs that referenced this pull request Sep 17, 2026
Restructure the Unreleased section into a 0.17.0 release section with
Breaking changes / Deprecations / Maintenance headings.

- Add missing entries for the Python 3.12 / NumPy 2.0 minimums (zarr-developers#834) and
  the pcodec 1.x update (zarr-developers#817), neither of which was documented.
- Move the tests relocation (zarr-developers#829) and the removal of DISABLE_NUMCODECS_CEXT
  (zarr-developers#826) from Maintenance to Breaking changes, and note that tests are still
  shipped in the sdist.
- Document the delta_spec="none" -> "no_op" deprecation (zarr-developers#817).
- Fix leftover RST roles (:user:/:issue:) from the Markdown conversion, which
  do not render under MyST, and convert RST literal blocks to fenced code.
- Add entries for the remaining maintenance PRs since v0.16.5.

Assisted-by: ClaudeCode:claude-opus-5

Co-Authored-By: Claude Opus 5 <[email protected]>
d-v-b added a commit that referenced this pull request Sep 17, 2026
Restructure the Unreleased section into a 0.17.0 release section with
Breaking changes / Deprecations / Maintenance headings.

- Add missing entries for the Python 3.12 / NumPy 2.0 minimums (#834) and
  the pcodec 1.x update (#817), neither of which was documented.
- Move the tests relocation (#829) and the removal of DISABLE_NUMCODECS_CEXT
  (#826) from Maintenance to Breaking changes, and note that tests are still
  shipped in the sdist.
- Document the delta_spec="none" -> "no_op" deprecation (#817).
- Fix leftover RST roles (:user:/:issue:) from the Markdown conversion, which
  do not render under MyST, and convert RST literal blocks to fenced code.
- Add entries for the remaining maintenance PRs since v0.16.5.

Assisted-by: ClaudeCode:claude-opus-5

Co-authored-by: Claude Opus 5 <[email protected]>
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2 participants