MNT: Build wheels with limited API

.github/workflows/wheels.yml

@@ -58,13 +58,11 @@ jobs:
       fail-fast: false
       matrix:
         buildplat:
+          - [ubuntu-20.04, manylinux_x86_64]
           - [ubuntu-20.04, musllinux_x86_64]
           - [macos-12, macosx_*]
           - [windows-2019, win_amd64]
-        python: ["cp38", "cp39", "cp310", "cp311", "cp312"]
-        include:
-          # Manylinux builds are cheap, do all in one
-          - { buildplat: ["ubuntu-20.04", "manylinux_x86_64"], python: "*" }
+        python: ["cp312"]
 
     steps:
       - uses: actions/checkout@v3
@@ -108,9 +106,38 @@ jobs:
       - name: Run tests
         run: pytest -v --pyargs nitime
 
+  test-wheel:
+    name: Test wheel
+    needs: [build-wheel]
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: ['ubuntu-latest', 'windows-latest', 'macos-latest']
+        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12']
+    steps:
+      - uses: actions/download-artifact@v3
+        with:
+          path: dist/
+      - name: Consolidate and list wheels
+        run: |
+          mkdir wheelhouse
+          mv dist/*/*.whl wheelhouse
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Display Python version
+        run: python -c "import sys; print(sys.version)"
+      - name: Install wheel
+        run: pip install --find-links ./wheelhouse --pre nitime
+      - run: python -c 'import nitime; print(nitime.__version__)'
+      - name: Install pytest
+        run: pip install pytest
+      - name: Run tests
+        run: pytest -v --pyargs nitime
+
   pre-publish:
     runs-on: ubuntu-latest
-    needs: [test-sdist, build-wheel]
+    needs: [test-sdist, test-wheel]
     steps:
       - uses: actions/download-artifact@v3
         with:

pyproject.toml

@@ -1,6 +1,7 @@
 [build-system]
 requires = [
   "setuptools",
+  "wheel",
   "setuptools_scm[toml]>=6.2",
   "cython",
   # As of numpy 1.25, you can now build against older APIs.

setup.py

@@ -4,27 +4,31 @@
 This file only contains cython components.
 See pyproject.toml for the remaining configuration.
 """
-from setuptools import setup
+from setuptools import setup, Extension
+from wheel.bdist_wheel import bdist_wheel
+from Cython.Build import cythonize
+from numpy import get_include
 
-try:
-    from setuptools import Extension
-    from Cython.Build import cythonize
-    from numpy import get_include
 
-    # add Cython extensions to the setup options
-    exts = [
+class bdist_wheel_abi3(bdist_wheel):
+    def get_tag(self):
+        python, abi, plat = super().get_tag()
+
+        # We support back to cp38
+        if python.startswith('cp3'):
+            python, abi = 'cp38', 'abi3'
+
+        return python, abi, plat
+
+setup(
+    ext_modules=[
         Extension(
             'nitime._utils',
             ['nitime/_utils.pyx'],
             include_dirs=[get_include()],
             define_macros=[('NPY_NO_DEPRECATED_API', 'NPY_1_7_API_VERSION')],
+            py_limited_api=True,
         )
-    ]
-    opts = {'ext_modules': cythonize(exts, language_level='3')}
-except ImportError:
-    # no loop for you!
-    opts = {}
-
-# Now call the actual setup function
-if __name__ == '__main__':
-    setup(**opts)
+    ],
+    cmdclass={'bdist_wheel': bdist_wheel_abi3},
+)