require setuptools >= 46.4.0 for version = attr: ast parsing

graingert · graingert · commit 4ae9bc5ed311 · 2020-11-04T23:58:09.000Z
see pypa/setuptools#1753
diff --git a/pyproject.toml b/pyproject.toml
@@ -1,3 +1,7 @@
+[build-system]
+requires = ["setuptools >= 46.4.0", "wheel"]
+build-backend = "setuptools.build_meta"
+
 [tool.towncrier]
 package = "exceptiongroup"
 filename = "docs/source/history.rst"
