diff --git a/setup.cfg b/setup.cfg
new file mode 100644
index 0000000000..e14c0e7b08
--- /dev/null
+++ b/setup.cfg
@@ -0,0 +1,2 @@
+# Setuptools v62.3 doesn't support editable installs with just 'pyproject.toml' (PEP 660).
+# Keep this file until it does!