[AryanRG]

Resolves python-poetry/poetry#11146.

An explicit [project] classifiers = [] currently falls through to legacy classifiers and automatic Python/license enrichment. Preserve that static empty list so built metadata contains no classifier headers. Missing project classifiers retain the existing fallback and enrichment.

Regression tests check factory values and actual wheel METADATA, with and without legacy classifiers. The follow-up removes the extra condition and tests for simultaneously declaring classifiers static and dynamic, as requested in review.

• Added tests for changed code.
• Updated documentation for changed code. The existing classifier documentation already describes the restored behavior.

Validation on CPython 3.12: default suite and integration tests pass, as do mypy and Ruff. The four retained regressions fail on the unchanged base. The full default suite also passes with the patch applied to current main. Other platforms and the main Poetry downstream suite were not run locally; hosted CI is separate.

Prepared with AI assistance.

[sourcery-ai]

Hey - I've reviewed your changes and they look great!

Sourcery assessment

Needs a human reviewer. If the empty-list versus dynamic-classifier distinction is wrong, the generated wheel can contain missing or unintended classifier metadata. Reverting fixes future builds, but wheels already built or published retain that metadata and would need a corrected release.

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Linked issues

#11146 Poetry Core adds classifiers despite an empty static project.classifiers list · 2 of 3 met

#	Requirement	Status	Notes
1	An explicitly empty, fully static project.classifiers list produces no classifier headers, including when legacy classifiers are present.	✅ Met	The change keeps the empty project list and disables enrichment; factory and wheel tests cover cases with and without legacy classifiers.
2	Keep fallback and enrichment when project classifiers are absent.	✅ Met	When project.get("classifiers") is None, the change still uses legacy classifiers and enables dynamic enrichment.
3	Preserve fallback and enrichment when an empty initial classifiers list explicitly declares classifiers dynamic.	❌ Not addressed	The change treats every present empty list as static and disables dynamic enrichment, without checking whether classifiers are declared dynamic.