[FBumann]

Prompt: Prepare a new release

Note

The following content was generated by AI.

When this PR merges, it releases specsolve 0.10.0. It moves ## Upcoming version into a ## 0.10.0 (2026-10-19) section. That section has a lead paragraph, a "Breaks" list and grouped pull-request lines. An empty ## Upcoming version stays on top.

Why 0.10.0, what was checked, what was not done

Why a minor version: three changes since v0.9.0 break something a caller has. AGENTS.md says a break like this raises the minor version.

• Model files must be in the mathspec 0.3.0 language (feat!: specsolve requires mathspec 0.3.0, where a file says what a missing row means, a sum or a lookup names the columns of its relation, and a dimension declares whether its order counts #2047).
• 0.9.x archives are refused. INPUTS_LAYOUT goes from 1 at v0.9.0 to 2 on main. ANSWER_LAYOUT stays at 4. The refusal names the plain files to solve from again.
• Module imports: every module outside specsolve, specsolve.types and specsolve.errors is private (refactor(api)!: a module outside types and errors has a name that starts with an underscore #2055).

Grouping: every line from ## Upcoming version is kept, each with its link. The lines are grouped into: the language, fixes and speed, the Python API, the benchmarks, and the site. #2056 is a chore and has no line.

Checks run:

• python -m tools.changelog check: releases 0.10.0 on merge
• python -m tools.changelog notes 0.10.0: read through
• pytest tests/test_changelog.py tests/test_docs_site.py: 49 passed
• pixi run format-check: clean
• pixi run docs-build (strict): no issues

The full suite was not re-run, because this PR changes only CHANGELOG.md.

Not done:

• No tag was pushed by hand. release.yaml tags the merge commit and publishes to PyPI after a reviewer approves the pypi environment.
• The date is today's. If the PR merges on a later day, the heading can be changed to that day before merging.
• fluxopt/specsolve-showcase pins specsolve<0.9, so this release does not reach it. When it moves up, tests/test_solve.py must name specsolve._strategy.

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Generated by Claude Code

[read-the-docs-community]

Documentation build overview

📚 specsolve | 🛠️ Build #35242469 | 📁 Comparing c321222 against latest (ecce0f3)

  🔍 Preview build  

1 file changed

± reference/changelog/index.html

[codspeed]

Merging this PR will not alter performance

✅ 104 untouched benchmarks
⏩ 307 skipped benchmarks¹

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_{Comparing claude/busy-gauss-rqnj2a (c321222) with main (ecce0f3)}

Footnotes

1. 307 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩