Use pip to build the wheels.

This is slower and involves more moving pieces, but ensures it works as expected.

.github/workflows/tests.yml

@@ -42,7 +42,7 @@ jobs:
     - name: Install greenlet (non-Mac)
       if: ${{ ! startsWith(runner.os, 'Mac') }}
       run: |
-        python setup.py bdist_wheel
+        python -m pip wheel --wheel-dir ./dist .
         python -m pip install -U -e ".[test,docs]"
       env:
         # Ensure we test with assertions enabled.
@@ -54,7 +54,7 @@ jobs:
     - name: Install greenlet (Mac)
       if: startsWith(runner.os, 'Mac')
       run: |
-        python setup.py bdist_wheel
+        python -m pip wheel --wheel-dir ./dist .
         python -m pip install -U -e ".[test,docs]"
         ls -l dist
         # Something in the build system isn't detecting that we're building for both,

appveyor.yml

@@ -43,7 +43,7 @@ environment:
     # Fully supported 64-bit versions, with testing. This should be
     # all the current (non EOL) versions.
     - PYTHON: "C:\\Python312-x64"
-      PYTHON_VERSION: "3.12.0b3"
+      PYTHON_VERSION: "3.12.0"
       PYTHON_ARCH: "64"
       PYTHON_EXE: python
       APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2022
@@ -182,7 +182,7 @@ test_script:
 #  - "%CMD_IN_ENV% python -m sphinx -b doctest -d docs/_build/doctrees docs docs/_build/doctest"
 
 after_test:
-  - "%CMD_IN_ENV% python setup.py bdist_wheel"
+  - "%CMD_IN_ENV% python -mpip wheel --wheel-dir dist ."
 
 artifacts:
   - path: dist\*

make-manylinux

@@ -37,7 +37,8 @@ if [ -d /greenlet -a -d /opt/python ]; then
         echo "Building $variant $(python --version)"
 
         python -mpip install -U pip
-        python setup.py bdist_wheel
+        python -mpip install -U setuptools wheel
+        python -mpip wheel --wheel-dir ./dist .
         python -mpip install -U .[test]
         python -m unittest discover -v greenlet.tests
         PATH="$OPATH" auditwheel repair dist/greenlet*.whl