Don't use latest version of setuptools

sbrunner · sbrunner · commit db2a3bf8a1d0 · 2026-02-10T11:08:58.000+01:00
diff --git a/pyproject.toml b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools", "wheel"]
+requires = ["setuptools<81.0.0", "wheel"]
 
 [tool.black]
 line-length = 79
diff --git a/tox.ini b/tox.ini
@@ -88,5 +88,5 @@ commands =
     # build wheel from sdist
     pip wheel -v --no-deps --no-index --no-build-isolation --wheel-dir {toxinidir}/dist --find-links {toxinidir}/dist deform
 deps =
-    setuptools
+    setuptools<81.0.0
     wheel
