From https://github.com/frescobaldi/python-poppler-qt5/pull/41/commits/4ee58b6ee02772db915fdc5e70e336e0e5b2f34c

--- pyproject.toml.orig	2020-10-11 18:59:42 UTC
+++ pyproject.toml
@@ -0,0 +1,37 @@
+[build-system]
+requires = ["sip >=5", "PyQt-builder", "PyQt5"]
+build-backend = "sipbuild.api"
+
+[tool.sip.metadata]
+name = "python-poppler-qt5"
+version = "0.75.0"
+summary = "A Python binding to Poppler-Qt5"
+description-file = "README.rst"
+home-page = "https://github.com/frescobaldi/python-poppler-qt5"
+maintainer = "Wilbert Berendsen"
+maintainer-email = "wbsoft@xs4all.nl"
+license = "LGPL"
+classifier = [
+  "Development Status :: 5 - Production/Stable",
+  "Intended Audience :: Developers",
+  "License :: OSI Approved :: GNU Library or Lesser General Public License (LGPL)",
+  "Operating System :: MacOS :: MacOS X",
+  "Operating System :: Microsoft :: Windows",
+  "Operating System :: POSIX",
+  "Programming Language :: Python :: 3",
+  "Topic :: Multimedia :: Graphics :: Viewers"
+]
+requires-dist = "PyQt5"
+
+[tool.sip.project]
+sip-files-dir = "."
+sdist-excludes = [
+  "version.sip",
+  ".git/*",
+  ".git/*/*",
+  ".git/*/*/*",
+  ".git/*/*/*/*",
+  ".git/*/*/*/*/*",
+  ".git/*/*/*/*/*/*",
+  ".git/*/*/*/*/*/*/*"
+]