build: add Python 3.15 free-threaded wheels

.github/workflows/tests.yml

@@ -65,7 +65,7 @@ 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_BUILD: "cp312* cp314t*"
+          CIBW_BUILD: "cp312* cp314t* cp315t*"
           CIBW_BUILD_FRONTEND: uv
           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
@@ -92,15 +92,18 @@ jobs:
         run: |
           uv venv --seed --python 3.12 .venv-3.12
           uv venv --seed --python 3.14t .venv-3.14t
+          uv venv --seed --python 3.15t .venv-3.15t
           uv pip install --python .venv-3.12/bin/python -U "cython>=3.1.0,<4" "setuptools>=77.0" wheel
           uv pip install --python .venv-3.14t/bin/python -U "cython>=3.1.0,<4" "setuptools>=77.0" wheel
+          uv pip install --python .venv-3.15t/bin/python -U "cython>=3.3.0,<4" "setuptools>=78.0" wheel
           # patchelf 0.18 (ubuntu-24.04's system version) corrupts ELF files
           # with large p_align; pin <0.18 for auditwheel to use.
           uv pip install --python .venv-3.12/bin/python -U ziglang auditwheel 'patchelf<0.18'
       - name: Cross-compile armv7l wheels with zig
         env:
           HOST_PY312: .venv-3.12/bin/python
           HOST_PY314T: .venv-3.14t/bin/python
+          HOST_PY315T: .venv-3.15t/bin/python
           TOOLS_PY: .venv-3.12/bin/python
         run: bash scripts/build-armv7l-cross.sh
       - name: Upload wheels

scripts/build-armv7l-cross.sh

@@ -7,7 +7,7 @@
 # armv7l without running any armv7l code. The target Python trees + system libs
 # are copied out of the manylinux armv7l image with `docker cp` (no execution).
 #
-# Builds two manylinux (glibc) wheels: cp312-abi3 and cp314t.
+# Builds three manylinux (glibc) wheels: cp312-abi3, cp314t, and cp315t.
 # musllinux armv7l is skipped: musl ffmpeg needs system libs (libdrm, libxcb*, 
 # libbz2) the musllinux image doesn't ship for auditwheel to bundle.
 
@@ -18,9 +18,11 @@ root="$(cd "$here/.." && pwd)"
 cd "$root"
 
 # Host interpreters that drive each build (must match the wheel's Python: 3.12
-# emits cp312-abi3, 3.14t emits cp314t). zig/auditwheel run from TOOLS_PY.
+# emits cp312-abi3; free-threaded hosts emit their matching tags).
+# zig/auditwheel run from TOOLS_PY.
 HOST_PY312="${HOST_PY312:-python3.12}"
 HOST_PY314T="${HOST_PY314T:-python3.14t}"
+HOST_PY315T="${HOST_PY315T:-python3.15t}"
 TOOLS_PY="${TOOLS_PY:-python3}"
 
 DIST_DIR="${DIST_DIR:-$root/dist}"
@@ -134,6 +136,7 @@ build_one() {
 extract_image
 build_one "$HOST_PY312" "cp312-cp312"
 build_one "$HOST_PY314T" "cp314*-cp314t"
+build_one "$HOST_PY315T" "cp315*-cp315t"
 
 echo
 echo "Built armv7l wheels:"

tests/test_doctests.py

@@ -45,7 +45,7 @@ def register_doctests(mod):
     for test in suite._tests:
 
         def func(self):
-            return test.runTest()
+            return test.debug()
 
         name = str("test_" + re.sub("[^a-zA-Z0-9]+", "_", test.id()).strip("_"))
         func.__name__ = name