Free-threaded Python Library Compatibility Checker

  error: subprocess-exited-with-error
  
  × Building wheel for llvmlite (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [35 lines of output]
      running bdist_wheel
      /tmp/tmp9tbphwwz/venv/bin/python /tmp/pip-install-nqvtlfxr/llvmlite_5aa860463d004ac58482bf4bff76b5da/ffi/build.py
      Running: cmake -G Unix Makefiles /tmp/pip-install-nqvtlfxr/llvmlite_5aa860463d004ac58482bf4bff76b5da/ffi
      Traceback (most recent call last):
        File "/tmp/pip-install-nqvtlfxr/llvmlite_5aa860463d004ac58482bf4bff76b5da/ffi/build.py", line 198, in <module>
          main()
          ~~~~^^
        File "/tmp/pip-install-nqvtlfxr/llvmlite_5aa860463d004ac58482bf4bff76b5da/ffi/build.py", line 190, in main
          main_posix('.so')
          ~~~~~~~~~~^^^^^^^
        File "/tmp/pip-install-nqvtlfxr/llvmlite_5aa860463d004ac58482bf4bff76b5da/ffi/build.py", line 178, in main_posix
          try_cmake(here_dir, build_dir, generator)
          ~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-install-nqvtlfxr/llvmlite_5aa860463d004ac58482bf4bff76b5da/ffi/build.py", line 95, in try_cmake
          subprocess.check_call(args)
          ~~~~~~~~~~~~~~~~~~~~~^^^^^^
        File "/root/.local/share/uv/python/cpython-3.13.5+freethreaded-linux-x86_64-gnu/lib/python3.13t/subprocess.py", line 414, in check_call
          retcode = call(*popenargs, **kwargs)
        File "/root/.local/share/uv/python/cpython-3.13.5+freethreaded-linux-x86_64-gnu/lib/python3.13t/subprocess.py", line 395, in call
          with Popen(*popenargs, **kwargs) as p:
               ~~~~~^^^^^^^^^^^^^^^^^^^^^^
        File "/root/.local/share/uv/python/cpython-3.13.5+freethreaded-linux-x86_64-gnu/lib/python3.13t/subprocess.py", line 1039, in __init__
          self._execute_child(args, executable, preexec_fn, close_fds,
          ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                              pass_fds, cwd, env,
                              ^^^^^^^^^^^^^^^^^^^
          ...<5 lines>...
                              gid, gids, uid, umask,
                              ^^^^^^^^^^^^^^^^^^^^^^
                              start_new_session, process_group)
                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/root/.local/share/uv/python/cpython-3.13.5+freethreaded-linux-x86_64-gnu/lib/python3.13t/subprocess.py", line 1972, in _execute_child
          raise child_exception_type(errno_num, err_msg, err_filename)
      FileNotFoundError: [Errno 2] No such file or directory: 'cmake'
      error: command '/tmp/tmp9tbphwwz/venv/bin/python' 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 llvmlite
error: failed-wheel-build-for-install

× Failed to build installable wheels for some pyproject.toml based projects
╰─> llvmlite

  error: subprocess-exited-with-error
  
  × pip subprocess to install build dependencies did not run successfully.
  │ exit code: 1
  ╰─> [2 lines of output]
      ERROR: Could not install packages due to an OSError: [Errno 2] No such file or directory
      
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error

× pip subprocess to install build dependencies did not run successfully.
│ exit code: 1
╰─> See above for output.

note: This error originates from a subprocess, and is likely not a problem with pip.

free-threaded build"
         51 | #  error "The limited API is not currently supported in the free-threaded build"
            |    ^~~~~
      In file included from /root/.local/share/uv/python/cpython-3.13.5+freethreaded-linux-x86_64-gnu/include/python3.13t/Python.h:72:
      /root/.local/share/uv/python/cpython-3.13.5+freethreaded-linux-x86_64-gnu/include/python3.13t/object.h:213:5: error: unknown type name ‘PyMutex’
        213 |     PyMutex ob_mutex;           // per-object lock
            |     ^~~~~~~
      /root/.local/share/uv/python/cpython-3.13.5+freethreaded-linux-x86_64-gnu/include/python3.13t/object.h: In function ‘Py_REFCNT’:
      /root/.local/share/uv/python/cpython-3.13.5+freethreaded-linux-x86_64-gnu/include/python3.13t/object.h:320:22: warning: implicit declaration of function ‘_Py_atomic_load_uint32_relaxed’ [-Wimplicit-function-declaration]
        320 |     uint32_t local = _Py_atomic_load_uint32_relaxed(&ob->ob_ref_local);
            |                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      /root/.local/share/uv/python/cpython-3.13.5+freethreaded-linux-x86_64-gnu/include/python3.13t/object.h:324:25: warning: implicit declaration of function ‘_Py_atomic_load_ssize_relaxed’ [-Wimplicit-function-declaration]
        324 |     Py_ssize_t shared = _Py_atomic_load_ssize_relaxed(&ob->ob_ref_shared);
            |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      /root/.local/share/uv/python/cpython-3.13.5+freethreaded-linux-x86_64-gnu/include/python3.13t/object.h: In function ‘_Py_IsImmortal’:
      /root/.local/share/uv/python/cpython-3.13.5+freethreaded-linux-x86_64-gnu/include/python3.13t/object.h:358:63: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
        358 |     return (_Py_atomic_load_uint32_relaxed(&op->ob_ref_local) ==
            |                                                               ^~
      /root/.local/share/uv/python/cpython-3.13.5+freethreaded-linux-x86_64-gnu/include/python3.13t/object.h: In function ‘Py_SET_REFCNT’:
      /root/.local/share/uv/python/cpython-3.13.5+freethreaded-linux-x86_64-gnu/include/python3.13t/object.h:396:9: warning: implicit declaration of function ‘_Py_IsOwnedByCurrentThread’ [-Wimplicit-function-declaration]
        396 |     if (_Py_IsOwnedByCurrentThread(ob)) {
            |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
      /root/.local/share/uv/python/cpython-3.13.5+freethreaded-linux-x86_64-gnu/include/python3.13t/object.h: In function ‘Py_SET_SIZE’:
      /root/.local/share/uv/python/cpython-3.13.5+freethreaded-linux-x86_64-gnu/include/python3.13t/object.h:436:5: warning: implicit declaration of function ‘_Py_atomic_store_ssize_relaxed’ [-Wimplicit-function-declaration]
        436 |     _Py_atomic_store_ssize_relaxed(&ob->ob_size, size);
            |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      /root/.local/share/uv/python/cpython-3.13.5+freethreaded-linux-x86_64-gnu/include/python3.13t/object.h: In function ‘Py_INCREF’:
      /root/.local/share/uv/python/cpython-3.13.5+freethreaded-linux-x86_64-gnu/include/python3.13t/object.h:817:9: warning: implicit declaration of function ‘_Py_atomic_store_uint32_relaxed’ [-Wimplicit-function-declaration]
        817 |         _Py_atomic_store_uint32_relaxed(&op->ob_ref_local, new_local);
            |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      /root/.local/share/uv/python/cpython-3.13.5+freethreaded-linux-x86_64-gnu/include/python3.13t/object.h:820:9: warning: implicit declaration of function ‘_Py_atomic_add_ssize’; did you mean ‘__atomic_add_fetch’? [-Wimplicit-function-declaration]
        820 |         _Py_atomic_add_ssize(&op->ob_ref_shared, (1 << _Py_REF_SHARED_SHIFT));
            |         ^~~~~~~~~~~~~~~~~~~~
            |         __atomic_add_fetch
      /root/.local/share/uv/python/cpython-3.13.5+freethreaded-linux-x86_64-gnu/include/python3.13t/object.h: In function ‘Py_DECREF’:
      /root/.local/share/uv/python/cpython-3.13.5+freethreaded-linux-x86_64-gnu/include/python3.13t/object.h:913:13: warning: implicit declaration of function ‘_Py_MergeZeroLocalRefcount’ [-Wimplicit-function-declaration]
        913 |             _Py_MergeZeroLocalRefcount(op);
            |             ^~~~~~~~~~~~~~~~~~~~~~~~~~
      /root/.local/share/uv/python/cpython-3.13.5+freethreaded-linux-x86_64-gnu/include/python3.13t/object.h:917:9: warning: implicit declaration of function ‘_Py_DecRefShared’; did you mean ‘_Py_DecRef’? [-Wimplicit-function-declaration]
        917 |         _Py_DecRefShared(op);
            |         ^~~~~~~~~~~~~~~~
            |         _Py_DecRef
      error: command '/usr/bin/cc' 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 argon2-cffi-bindings
error: failed-wheel-build-for-install

× Failed to build installable wheels for some pyproject.toml based projects
╰─> argon2-cffi-bindings

  error: subprocess-exited-with-error
  
  × pip subprocess to install build dependencies did not run successfully.
  │ exit code: 1
  ╰─> [46 lines of output]
      Ignoring cffi: markers 'python_version >= "3.14"' don't match your environment
      Collecting setuptools>=77
        Using cached setuptools-80.9.0-py3-none-any.whl.metadata (6.6 kB)
      Collecting setuptools_scm>=6.2 (from setuptools_scm[toml]>=6.2)
        Using cached setuptools_scm-9.2.0-py3-none-any.whl.metadata (7.7 kB)
      Collecting cffi>=1.0.1
        Using cached cffi-2.0.0.tar.gz (523 kB)
        Installing build dependencies: started
        Installing build dependencies: finished with status 'done'
        Getting requirements to build wheel: started
        Getting requirements to build wheel: finished with status 'error'
        error: subprocess-exited-with-error
      
        × Getting requirements to build wheel did not run successfully.
        │ exit code: 1
        ╰─> [20 lines of output]
            Traceback (most recent call last):
              File "/tmp/tmpcof4y48k/venv/lib/python3.13t/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 389, in <module>
                main()
                ~~~~^^
              File "/tmp/tmpcof4y48k/venv/lib/python3.13t/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 373, in main
                json_out["return_val"] = hook(**hook_input["kwargs"])
                                         ~~~~^^^^^^^^^^^^^^^^^^^^^^^^
              File "/tmp/tmpcof4y48k/venv/lib/python3.13t/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 143, in get_requires_for_build_wheel
                return hook(config_settings)
              File "/tmp/pip-build-env-w6dhqj7f/overlay/lib/python3.13t/site-packages/setuptools/build_meta.py", line 331, in get_requires_for_build_wheel
                return self._get_build_requires(config_settings, requirements=[])
                       ~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
              File "/tmp/pip-build-env-w6dhqj7f/overlay/lib/python3.13t/site-packages/setuptools/build_meta.py", line 301, in _get_build_requires
                self.run_setup()
                ~~~~~~~~~~~~~~^^
              File "/tmp/pip-build-env-w6dhqj7f/overlay/lib/python3.13t/site-packages/setuptools/build_meta.py", line 317, in run_setup
                exec(code, locals())
                ~~~~^^^^^^^^^^^^^^^^
              File "<string>", line 22, in <module>
            RuntimeError: CFFI does not support the free-threaded build of CPython 3.13. Upgrade to free-threaded 3.14 or newer to use CFFI with the free-threaded build.
            [end of output]
      
        note: This error originates from a subprocess, and is likely not a problem with pip.
      error: subprocess-exited-with-error
      
      × Getting requirements to build wheel did not run successfully.
      │ exit code: 1
      ╰─> See above for output.
      
      note: This error originates from a subprocess, and is likely not a problem with pip.
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error

× pip subprocess to install build dependencies did not run successfully.
│ exit code: 1
╰─> See above for output.

note: This error originates from a subprocess, and is likely not a problem with pip.