Split out CPython and PyPy tests

.github/workflows/test.yml

@@ -28,31 +28,17 @@ jobs:
       matrix:
         platform: [ubuntu-latest, macos-13, macos-latest, windows-latest]
         python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "pypy-3.9", "pypy-3.10"]
-        # TODO: bring these back someday when SciPy is easier to install
-        # via PyPy, and test just Ubuntu for it for now
-        exclude:
-          - platform: macos-13
-            python-version: "pypy-3.9"
-          - platform: macos-13
-            python-version: "pypy-3.10"
-          - platform: macos-latest
-            python-version: "pypy-3.10"
-          - platform: macos-latest
-            python-version: "pypy-3.9"
-          - platform: windows-latest
-            python-version: "pypy-3.9"
-          - platform: windows-latest
-            python-version: "pypy-3.10"
     steps:
     - uses: actions/checkout@v4.1.7
     - uses: actions/setup-python@v5.1.1
       with:
         python-version: ${{ matrix.python-version }}
     - uses: yezz123/setup-uv@v4
 
-    - name: Install SciPy prerequisites for Linux with PyPy
-      if: matrix.platform == 'ubuntu-latest' && startsWith(matrix.python-version, 'pypy')
-      run: sudo apt-get install libopenblas-dev
-
-    - name: Run tests
+    - name: Run CPython tests
+      if: ${{ !startsWith(matrix.python-version, 'pypy') }}
       run: uvx nox -s tests
+
+    - name: Run PyPy tests
+      if: ${{ startsWith(matrix.python-version, 'pypy') }}
+      run: nox -s tests -- k "not scipy"

noxfile.py

@@ -1,3 +1,5 @@
+import platform
+
 import nox
 
 nox.needs_version = ">=2024.4.15"
@@ -19,7 +21,11 @@ def check(session):
 @nox.session(name="tests")
 def run_tests(session):
     """Run unit tests and generate a coverage report"""
-    session.install("-e", ".[test,scipy]")
+    # SciPy doesn't have wheels on PyPy
+    if platform.python_implementation() == "PyPy":
+        session.install("-e", ".[test]")
+    else:
+        session.install("-e", ".[test,scipy]")
     session.run("pytest", "--cov=autograd", "--cov-report=xml", "--cov-append", *session.posargs)