Test cp313t in CI

.github/workflows/build.yml

@@ -68,7 +68,7 @@ jobs:
       - name: Audit ABI3 compliance
         # This may be moved into cibuildwheel itself in the future. See
         # https://github.com/pypa/cibuildwheel/issues/1342
-        run: "pip install abi3audit && abi3audit --verbose --summary ./wheelhouse/*.whl"
+        run: "pip install abi3audit && abi3audit --verbose --summary ./wheelhouse/*abi3*.whl"
 
       - uses: actions/upload-artifact@v4
         with:

.github/workflows/test.yml

@@ -57,6 +57,8 @@ jobs:
             tox_env: py312-full
           - python: '3.13'
             tox_env: py313-full
+          - python: '3.13t'
+            tox_env: py313t
           - python: '3.14.0-alpha.1 - 3.14'
             tox_env: py314-full
           - python: 'pypy-3.10'
@@ -140,13 +142,3 @@ jobs:
           # built here; the real build is defined in build.yml.
           CIBW_ARCHS: native
           CIBW_BUILD: cp313-manylinux*
-
-          # Alternatively, uncomment the following lines (and replace the previous CIBW_BUILD)
-          # to test a freethreading build of python.
-          #CIBW_BUILD: cp313t-manylinux*
-          #CIBW_ENABLE: cpython-freethreading
-          # I don't understand what this does but auditwheel seems to fail in this configuration.
-          # Since we're throwing away the wheels here, just skip it.
-          # TODO: When we no longer need to disable this, we can enable freethreading in
-          # build.yml.
-          #CIBW_REPAIR_WHEEL_COMMAND: ""

pyproject.toml

@@ -6,7 +6,8 @@ build-backend = "setuptools.build_meta"
 target-version = ['py39', 'py310', 'py311', 'py312', 'py313']
 
 [tool.cibuildwheel]
-build = "cp39* cp310* cp311* cp312* cp313*"
+build = "cp39* cp310* cp311* cp312* cp313* cp313t*"
+enable = "cpython-freethreading"
 test-command = "python -m tornado.test"
 
 [tool.cibuildwheel.macos]
@@ -28,4 +29,4 @@ test-skip = "*-win_arm64"
 # Note that because we use the stable ABI, the wheels built for
 # cp39-musllinux_i686 will still be available for users of 3.13, this just
 # means we won't be testing them in this configuration.
-test-skip = "cp313-musllinux_i686"
+test-skip = "cp313-musllinux_i686 cp313t-musllinux_i686"

tox.ini

@@ -13,7 +13,7 @@
 [tox]
 envlist =
         # Basic configurations: Run the tests for each python version.
-        py39-full,py310-full,py311-full,py312-full,py313-full,pypy3-full
+        py39-full,py310-full,py311-full,py312-full,py313-full,py313t,pypy3-full
 
         # Build and test the docs with sphinx.
         docs
@@ -41,7 +41,7 @@ deps =
 
 setenv =
        # Treat the extension as mandatory in testing (but not on pypy)
-       {py3,py39,py310,py311,py312,py313,py314}: TORNADO_EXTENSION=1
+       {py3,py39,py310,py311,py312,py313,py313t,py314}: TORNADO_EXTENSION=1
        # CI workers are often overloaded and can cause our tests to exceed
        # the default timeout of 5s.
        ASYNC_TEST_TIMEOUT=25