Fix sdist build under setuptools >= 82 (pkg_resources removed) - #598
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Fix sdist build under setuptools >= 82 (pkg_resources removed)#598sethc555 wants to merge 1 commit into
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…>=82) setuptools 82.0.0 (2026-02-08) removed pkg_resources, so building this project's sdist in a default isolated build environment fails with ModuleNotFoundError: No module named 'pkg_resources'. Remove the setuptools<18.5/_markerlib compatibility shims that were the only pkg_resources users; they were dead code on any modern setuptools. Verified: the patched sdist builds a wheel with setuptools 82 in a clean python:3.12 container; the unpatched one does not. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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setuptools 82.0.0 (2026-02-08) removed pkg_resources. Because pip's default isolated build installs the latest setuptools, installing html5lib from sdist now fails:
This removes the setuptools<18.5/_markerlib compatibility shims, which were the only pkg_resources users and dead code on any modern setuptools.
Verified: with this patch the sdist builds a wheel against setuptools 82 in a clean python:3.12 container; without it, it does not.
Found while scanning the top-5000 PyPI packages for breakage from the setuptools 82 removals — happy to adjust the patch however you prefer.