Build limited API 3.11+, closes #2033

Author: WyattBlue

.github/workflows/smoke.yml

@@ -35,10 +35,9 @@ jobs:
       fail-fast: false
       matrix:
         config:
-          - {os: ubuntu-24.04, python: "3.14t", ffmpeg: "8.0.1", extras: true}
           - {os: ubuntu-24.04, python: "3.12", ffmpeg: "8.0.1", extras: true}
-          - {os: ubuntu-24.04, python: "pypy3.10", ffmpeg: "8.0.1"}
-          - {os: macos-14, python: "3.10", ffmpeg: "8.0.1"}
+          - {os: ubuntu-24.04, python: "pypy3.11", ffmpeg: "8.0.1"}
+          - {os: macos-14, python: "3.11", ffmpeg: "8.0.1"}
 
     env:
       PYAV_PYTHON: python${{ matrix.config.python }}
@@ -122,7 +121,7 @@ jobs:
       fail-fast: false
       matrix:
         config:
-          - {os: windows-latest, python: "3.10", ffmpeg: "latest"}
+          - {os: windows-latest, python: "3.11", ffmpeg: "latest"}
 
     steps:
     - name: Checkout

.github/workflows/tests.yml

@@ -40,9 +40,9 @@ jobs:
             arch: AMD64
     steps:
       - uses: actions/checkout@v6
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
-          python-version: "3.13"
+          python-version: "3.14"
       - name: Set Minimum MacOS Target
         if: runner.os == 'macOS'
         run: |
@@ -61,10 +61,9 @@ jobs:
           CIBW_ENVIRONMENT_MACOS: PKG_CONFIG_PATH=/tmp/vendor/lib/pkgconfig LDFLAGS=-headerpad_max_install_names
           CIBW_ENVIRONMENT_WINDOWS: INCLUDE=C:\\cibw\\vendor\\include LIB=C:\\cibw\\vendor\\lib PYAV_SKIP_TESTS=unicode_filename
           CIBW_REPAIR_WHEEL_COMMAND_WINDOWS: delvewheel repair --add-path C:\cibw\vendor\bin -w {dest_dir} {wheel}
-          CIBW_SKIP: "pp*"
+          CIBW_SKIP: "pp* cp312* cp313* cp314*"
           CIBW_TEST_COMMAND: mv {project}/av {project}/av.disabled && python -m pytest {package}/tests && mv {project}/av.disabled {project}/av
           CIBW_TEST_REQUIRES: pytest numpy
-          CIBW_ENABLE: cpython-freethreading
         run: |
           pip install cibuildwheel delvewheel
           cibuildwheel --output-dir dist

pyproject.toml

@@ -10,7 +10,7 @@ authors = [
     {name = "WyattBlue", email = "wyattblue@auto-editor.com"},
     {name = "Jeremy Lainé", email = "jeremy.laine@m4x.org"},
 ]
-requires-python = ">=3.10"
+requires-python = ">=3.11"
 classifiers = [
     "Development Status :: 5 - Production/Stable",
     "Intended Audience :: Developers",
@@ -20,7 +20,6 @@ classifiers = [
     "Operating System :: Unix",
     "Operating System :: Microsoft :: Windows",
     "Programming Language :: Cython",
-    "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",

setup.py

@@ -21,6 +21,12 @@
     "swresample",
 ]
 
+if sys.implementation.name == "cpython":
+    is_cpython = True
+    options = {"bdist_wheel": {"py_limited_api": "cp311"}}
+else:
+    is_cpython = False
+    options = {}
 
 # Monkey-patch Cython to not overwrite embedded signatures.
 old_embed_signature = EmbedSignature._embed_signature
@@ -142,6 +148,8 @@ def parse_cflags(raw_flags):
     include_dirs=[f"{IMPORT_NAME}/filter"] + extension_extra["include_dirs"],
     libraries=extension_extra["libraries"],
     library_dirs=extension_extra["library_dirs"],
+    define_macros=[("Py_LIMITED_API", 0x030B0000)],
+    py_limited_api=is_cpython,
 )
 
 compiler_directives = {
@@ -186,6 +194,8 @@ def parse_cflags(raw_flags):
                 libraries=extension_extra["libraries"],
                 library_dirs=extension_extra["library_dirs"],
                 sources=[pyx_path],
+                define_macros=[("Py_LIMITED_API", 0x030B0000)],
+                py_limited_api=is_cpython,
             ),
             compiler_directives=compiler_directives,
             build_dir="src",
@@ -202,4 +212,5 @@ def parse_cflags(raw_flags):
     packages=find_packages(include=[f"{IMPORT_NAME}*"]),
     package_data=package_data,
     ext_modules=ext_modules,
+    options=options,
 )