Is Python 3.13t supported?

[btakita]

Hi. I'm attempting to install aiohttp on a Python 3.13t venv. Getting the following. Is 3.13t supported? I didn't see any open issues.

  Building wheel for aiohttp (pyproject.toml) ... error
  error: subprocess-exited-with-error

  × Building wheel for aiohttp (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [143 lines of output]
      *********************
      * Accelerated build *
      *********************
      running bdist_wheel
      running build
      running build_py
      creating build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/worker.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/web_ws.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/web_urldispatcher.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/web_server.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/web_runner.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/web_routedef.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/web_response.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/web_request.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/web_protocol.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/web_middlewares.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/web_log.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/web_fileresponse.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/web_exceptions.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/web_app.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/web.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/typedefs.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/tracing.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/test_utils.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/tcp_helpers.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/streams.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/resolver.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/pytest_plugin.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/payload_streamer.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/payload.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/multipart.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/log.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/http_writer.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/http_websocket.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/http_parser.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/http_exceptions.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/http.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/helpers.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/hdrs.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/formdata.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/cookiejar.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/connector.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/compression_utils.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/client_ws.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/client_reqrep.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/client_proto.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/client_exceptions.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/client.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/base_protocol.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/abc.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/__init__.py -> build/lib.linux-x86_64-cpython-313t/aiohttp
      creating build/lib.linux-x86_64-cpython-313t/aiohttp/_websocket
      copying aiohttp/_websocket/writer.py -> build/lib.linux-x86_64-cpython-313t/aiohttp/_websocket
      copying aiohttp/_websocket/reader_py.py -> build/lib.linux-x86_64-cpython-313t/aiohttp/_websocket
      copying aiohttp/_websocket/reader_c.py -> build/lib.linux-x86_64-cpython-313t/aiohttp/_websocket
      copying aiohttp/_websocket/reader.py -> build/lib.linux-x86_64-cpython-313t/aiohttp/_websocket
      copying aiohttp/_websocket/models.py -> build/lib.linux-x86_64-cpython-313t/aiohttp/_websocket
      copying aiohttp/_websocket/helpers.py -> build/lib.linux-x86_64-cpython-313t/aiohttp/_websocket
      copying aiohttp/_websocket/__init__.py -> build/lib.linux-x86_64-cpython-313t/aiohttp/_websocket
      running egg_info
      writing aiohttp.egg-info/PKG-INFO
      writing dependency_links to aiohttp.egg-info/dependency_links.txt
      writing requirements to aiohttp.egg-info/requires.txt
      writing top-level names to aiohttp.egg-info/top_level.txt
      reading manifest file 'aiohttp.egg-info/SOURCES.txt'
      reading manifest template 'MANIFEST.in'
      warning: no files found matching 'aiohttp' anywhere in distribution
      warning: no files found matching '*.pyi' anywhere in distribution
      warning: no previously-included files matching '*.pyc' found anywhere in distribution
      warning: no previously-included files matching '*.pyd' found anywhere in distribution
      warning: no previously-included files matching '*.so' found anywhere in distribution
      warning: no previously-included files matching '*.lib' found anywhere in distribution
      warning: no previously-included files matching '*.dll' found anywhere in distribution
      warning: no previously-included files matching '*.a' found anywhere in distribution
      warning: no previously-included files matching '*.obj' found anywhere in distribution
      warning: no previously-included files found matching 'aiohttp/*.html'
      no previously-included directories found matching 'docs/_build'
      adding license file 'LICENSE.txt'
      writing manifest file 'aiohttp.egg-info/SOURCES.txt'
      copying aiohttp/_cparser.pxd -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/_find_header.pxd -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/_headers.pxi -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/_http_parser.pyx -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/_http_writer.pyx -> build/lib.linux-x86_64-cpython-313t/aiohttp
      copying aiohttp/py.typed -> build/lib.linux-x86_64-cpython-313t/aiohttp
      creating build/lib.linux-x86_64-cpython-313t/aiohttp/.hash
      copying aiohttp/.hash/_cparser.pxd.hash -> build/lib.linux-x86_64-cpython-313t/aiohttp/.hash
      copying aiohttp/.hash/_find_header.pxd.hash -> build/lib.linux-x86_64-cpython-313t/aiohttp/.hash
      copying aiohttp/.hash/_http_parser.pyx.hash -> build/lib.linux-x86_64-cpython-313t/aiohttp/.hash
      copying aiohttp/.hash/_http_writer.pyx.hash -> build/lib.linux-x86_64-cpython-313t/aiohttp/.hash
      copying aiohttp/.hash/hdrs.py.hash -> build/lib.linux-x86_64-cpython-313t/aiohttp/.hash
      copying aiohttp/_websocket/mask.pxd -> build/lib.linux-x86_64-cpython-313t/aiohttp/_websocket
      copying aiohttp/_websocket/mask.pyx -> build/lib.linux-x86_64-cpython-313t/aiohttp/_websocket
      copying aiohttp/_websocket/reader_c.pxd -> build/lib.linux-x86_64-cpython-313t/aiohttp/_websocket
      creating build/lib.linux-x86_64-cpython-313t/aiohttp/_websocket/.hash
      copying aiohttp/_websocket/.hash/mask.pxd.hash -> build/lib.linux-x86_64-cpython-313t/aiohttp/_websocket/.hash
      copying aiohttp/_websocket/.hash/mask.pyx.hash -> build/lib.linux-x86_64-cpython-313t/aiohttp/_websocket/.hash
      copying aiohttp/_websocket/.hash/reader_c.pxd.hash -> build/lib.linux-x86_64-cpython-313t/aiohttp/_websocket/.hash
      running build_ext
      building 'aiohttp._websocket.mask' extension
      creating build/temp.linux-x86_64-cpython-313t/aiohttp/_websocket
      gcc -fno-strict-overflow -Wsign-compare -DNDEBUG -g -O3 -Wall -fPIC -I/home/brian/work/Presence-AI/presence/livekit/agent/.venv/include -I/home/brian/.pyenv/versions/3.13.2t/include/python3.13t -c aiohttp/_websocket/mask.c -o build/temp.linux-x86_64-cpython-313t/aiohttp/_websocket/mask.o
      aiohttp/_websocket/mask.c:1864:80: error: unknown type name ‘__pyx_vectorcallfunc’; did you mean ‘vectorcallfunc’?
       1864 | static CYTHON_INLINE PyObject *__Pyx_PyVectorcall_FastCallDict(PyObject *func, __pyx_vectorcallfunc vc, PyObject *const *args, size_t nargs, PyObject *kw);
            |                                                                                ^~~~~~~~~~~~~~~~~~~~
            |                                                                                vectorcallfunc
      aiohttp/_websocket/mask.c: In function ‘__pyx_f_7aiohttp_10_websocket_4mask__websocket_mask_cython’:
      aiohttp/_websocket/mask.c:2905:3: warning: ‘Py_OptimizeFlag’ is deprecated [-Wdeprecated-declarations]
       2905 |   if (unlikely(__pyx_assertions_enabled())) {
            |   ^~
      In file included from /home/brian/.pyenv/versions/3.13.2t/include/python3.13t/Python.h:76,
                       from aiohttp/_websocket/mask.c:16:
      /home/brian/.pyenv/versions/3.13.2t/include/python3.13t/cpython/pydebug.h:13:37: note: declared here
         13 | Py_DEPRECATED(3.12) PyAPI_DATA(int) Py_OptimizeFlag;
            |                                     ^~~~~~~~~~~~~~~
      aiohttp/_websocket/mask.c: At top level:
      aiohttp/_websocket/mask.c:4846:69: error: unknown type name ‘__pyx_vectorcallfunc’; did you mean ‘vectorcallfunc’?
       4846 | static PyObject *__Pyx_PyVectorcall_FastCallDict_kw(PyObject *func, __pyx_vectorcallfunc vc, PyObject *const *args, size_t nargs, PyObject *kw)
            |                                                                     ^~~~~~~~~~~~~~~~~~~~
            |                                                                     vectorcallfunc
      aiohttp/_websocket/mask.c:4891:80: error: unknown type name ‘__pyx_vectorcallfunc’; did you mean ‘vectorcallfunc’?
       4891 | static CYTHON_INLINE PyObject *__Pyx_PyVectorcall_FastCallDict(PyObject *func, __pyx_vectorcallfunc vc, PyObject *const *args, size_t nargs, PyObject *kw)
            |                                                                                ^~~~~~~~~~~~~~~~~~~~
            |                                                                                vectorcallfunc
      aiohttp/_websocket/mask.c: In function ‘__Pyx_CyFunction_CallAsMethod’:
      aiohttp/_websocket/mask.c:5580:6: error: unknown type name ‘__pyx_vectorcallfunc’; did you mean ‘vectorcallfunc’?
       5580 |      __pyx_vectorcallfunc vc = __Pyx_CyFunction_func_vectorcall(cyfunc);
            |      ^~~~~~~~~~~~~~~~~~~~
            |      vectorcallfunc
      aiohttp/_websocket/mask.c:1954:45: error: initialization of ‘int’ from ‘vectorcallfunc’ {aka ‘struct _object * (*)(struct _object *, struct _object * const*, long unsigned int,  struct _object *)’} makes integer from pointer without a cast [-Wint-conversion]
       1954 | #define __Pyx_CyFunction_func_vectorcall(f) (((PyCFunctionObject*)f)->vectorcall)
            |                                             ^
      aiohttp/_websocket/mask.c:5580:32: note: in expansion of macro ‘__Pyx_CyFunction_func_vectorcall’
       5580 |      __pyx_vectorcallfunc vc = __Pyx_CyFunction_func_vectorcall(cyfunc);
            |                                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      aiohttp/_websocket/mask.c:5583:16: error: implicit declaration of function ‘__Pyx_PyVectorcall_FastCallDict’ [-Wimplicit-function-declaration]
       5583 |         return __Pyx_PyVectorcall_FastCallDict(func, vc, &PyTuple_GET_ITEM(args, 0), (size_t)PyTuple_GET_SIZE(args), kw);
            |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      aiohttp/_websocket/mask.c:5583:16: error: returning ‘int’ from a function with return type ‘PyObject *’ {aka ‘struct _object *’} makes pointer from integer without a cast [-Wint-conversion]
       5583 |         return __Pyx_PyVectorcall_FastCallDict(func, vc, &PyTuple_GET_ITEM(args, 0), (size_t)PyTuple_GET_SIZE(args), kw);
            |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      error: command '/usr/bin/gcc' failed with exit code 1
      [end of output]

  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for aiohttp
  Building wheel for av (pyproject.toml) ... error
  error: subprocess-exited-with-error

[bdraco]

Not yet. There are still many libraries that aiohttp depends on that don't work with free-threading yet.