try pinning setuptools?

Author: MarcoGorelli

.github/workflows/python-dev.yml

@@ -72,7 +72,8 @@ jobs:
     - name: Install dependencies
       run: |
         python --version
-        python -m pip install --upgrade pip
+        python -m pip install --upgrade pip wheel
+        python -m pip install setuptools==59.2.0
         python -m pip install -i https://pypi.anaconda.org/scipy-wheels-nightly/simple numpy
         python -m pip install git+https://github.com/nedbat/coveragepy.git
         python -m pip install versioneer[toml]