Sorry for my own confusion, the right build-engine is python3-hatchling
Build-Depends: debhelper-compat (= 13), dh-python, autopkgtest, openstack-pkg-tools, pybuild-plugin-pyproject, python3-all, -python3-poetry-core, -python3-setuptools, -python3-setuptools-scm, python3-sphinx, Build-Depends-Indep: python3-attr, python3-hatch-fancy-pypi-readme, python3-hatch-vcs, python3-hatchling, python3-idna, python3-json-pointer, python3-jsonpath-ng, python3-jsonschema-specifications, python3-lxml, python3-pip, python3-pyrsistent, -python3-pytest, +python3-pytest <!nocheck>, python3-referencing, python3-rfc3987, python3-rpds-py, -python3-sphinx-autodoc-typehints, -python3-sphinx-copybutton, -python3-sphinxext-opengraph, +python3-sphinx-autodoc-typehints <!nodoc>, +python3-sphinx-copybutton <!nodoc>, +python3-sphinxext-opengraph <!nodoc>, python3-twisted, python3-uritemplate, python3-webcolors,
