PyPI · pypi.org

chemicals

Py Custom Build Backend: Non-standard PEP 517 build-backend `backend` — runs custom code at install time.

Why PkgRadar flagged 1.5.2

Severity	Signal	Evidence
medium	Py Custom Build Backend	Non-standard PEP 517 build-backend `backend` — runs custom code at install time. · pyproject.toml

Scanned versions

Version	Verdict	Score	Scanned (UTC)
`1.5.2`	Review	7	2026-06-07

Block this in CI

PkgRadar gates chemicals (and every other dependency) before it merges. One line in your pipeline:

pkgradar gate --ecosystem pypi chemicals==1.5.2