lower setuptools (#55)

Author: makslevental

pyproject.toml

@@ -1,6 +1,7 @@
 [build-system]
 # https://stackoverflow.com/a/69711730
-requires = ["setuptools>=64.0.0", "wheel", "pip"]
+#requires = ["setuptools>=64.0.0", "wheel", "pip"]
+requires = ["setuptools>=42", "wheel", "pip"]
 build-backend = "setuptools.build_meta"
 
 [tool.pytest.ini_options]