Thinc 9.1.1 failed to update

[duytrung]

How to reproduce the behaviour

Update using "pip install -U thinc"

Your Environment

• Operating System: Windows 11 Professional
• Python Version Used: 3.13.9
• Thinc Version Used: 8
• Environment Information:

Error Log

Building wheels for collected packages: thinc
Building wheel for thinc (pyproject.toml) ... error
error: subprocess-exited-with-error

× Building wheel for thinc (pyproject.toml) did not run successfully.
│ exit code: 1
╰─> [426 lines of output]
Cythonizing sources
C:\Users\trung\AppData\Local\Temp\pip-build-env-f_r6u657\overlay\Lib\site-packages\setuptools\dist.py:759: SetuptoolsDeprecationWarning: License classifiers are deprecated.
!!

          ********************************************************************************
          Please consider removing the following classifiers in favor of a SPDX license expression:

          License :: OSI Approved :: MIT License

          See https://packaging.python.org/en/latest/guides/writing-pyproject-toml/#license for details.
          ********************************************************************************

  !!
    self._finalize_license_expression()
  running bdist_wheel
  running build
  running build_py
  creating build\lib.win-amd64-cpython-313\thinc
  copying thinc\about.py -> build\lib.win-amd64-cpython-313\thinc
  copying thinc\api.py -> build\lib.win-amd64-cpython-313\thinc
  copying thinc\compat.py -> build\lib.win-amd64-cpython-313\thinc
  copying thinc\config.py -> build\lib.win-amd64-cpython-313\thinc
  copying thinc\initializers.py -> build\lib.win-amd64-cpython-313\thinc
  copying thinc\loss.py -> build\lib.win-amd64-cpython-313\thinc
  copying thinc\model.py -> build\lib.win-amd64-cpython-313\thinc
  copying thinc\mypy.py -> build\lib.win-amd64-cpython-313\thinc
  copying thinc\optimizers.py -> build\lib.win-amd64-cpython-313\thinc
  copying thinc\schedules.py -> build\lib.win-amd64-cpython-313\thinc
  copying thinc\types.py -> build\lib.win-amd64-cpython-313\thinc
  copying thinc\util.py -> build\lib.win-amd64-cpython-313\thinc
  copying thinc\__init__.py -> build\lib.win-amd64-cpython-313\thinc
  creating build\lib.win-amd64-cpython-313\thinc\backends
  copying thinc\backends\cupy_ops.py -> build\lib.win-amd64-cpython-313\thinc\backends
  copying thinc\backends\mps_ops.py -> build\lib.win-amd64-cpython-313\thinc\backends
  copying thinc\backends\ops.py -> build\lib.win-amd64-cpython-313\thinc\backends
  copying thinc\backends\_cupy_allocators.py -> build\lib.win-amd64-cpython-313\thinc\backends
  copying thinc\backends\_custom_kernels.py -> build\lib.win-amd64-cpython-313\thinc\backends
  copying thinc\backends\_param_server.py -> build\lib.win-amd64-cpython-313\thinc\backends
  copying thinc\backends\__init__.py -> build\lib.win-amd64-cpython-313\thinc\backends
  creating build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\add.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\array_getitem.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\bidirectional.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\cauchysimilarity.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\chain.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\clipped_linear.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\clone.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\concatenate.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\dish.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\dropout.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\embed.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\expand_window.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\gelu.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\hard_swish.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\hard_swish_mobilenet.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\hashembed.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\layernorm.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\linear.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\list2array.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\list2padded.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\list2ragged.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\logistic.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\lstm.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\map_list.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\maxout.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\mish.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\multisoftmax.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\mxnetwrapper.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\noop.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\padded2list.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\parametricattention.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\parametricattention_v2.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\pytorchwrapper.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\ragged2list.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\reduce_first.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\reduce_last.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\reduce_max.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\reduce_mean.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\reduce_sum.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\relu.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\remap_ids.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\residual.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\resizable.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\siamese.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\sigmoid.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\sigmoid_activation.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\softmax.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\softmax_activation.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\strings2arrays.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\swish.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\tensorflowwrapper.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\torchscriptwrapper.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\tuplify.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\uniqued.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\with_array.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\with_array2d.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\with_cpu.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\with_debug.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\with_flatten.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\with_flatten_v2.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\with_getitem.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\with_list.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\with_nvtx_range.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\with_padded.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\with_ragged.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\with_reshape.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\with_signpost_interval.py -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\__init__.py -> build\lib.win-amd64-cpython-313\thinc\layers
  creating build\lib.win-amd64-cpython-313\thinc\shims
  copying thinc\shims\mxnet.py -> build\lib.win-amd64-cpython-313\thinc\shims
  copying thinc\shims\pytorch.py -> build\lib.win-amd64-cpython-313\thinc\shims
  copying thinc\shims\pytorch_grad_scaler.py -> build\lib.win-amd64-cpython-313\thinc\shims
  copying thinc\shims\shim.py -> build\lib.win-amd64-cpython-313\thinc\shims
  copying thinc\shims\tensorflow.py -> build\lib.win-amd64-cpython-313\thinc\shims
  copying thinc\shims\torchscript.py -> build\lib.win-amd64-cpython-313\thinc\shims
  copying thinc\shims\__init__.py -> build\lib.win-amd64-cpython-313\thinc\shims
  creating build\lib.win-amd64-cpython-313\thinc\tests
  copying thinc\tests\conftest.py -> build\lib.win-amd64-cpython-313\thinc\tests
  copying thinc\tests\enable_mxnet.py -> build\lib.win-amd64-cpython-313\thinc\tests
  copying thinc\tests\enable_tensorflow.py -> build\lib.win-amd64-cpython-313\thinc\tests
  copying thinc\tests\strategies.py -> build\lib.win-amd64-cpython-313\thinc\tests
  copying thinc\tests\test_config.py -> build\lib.win-amd64-cpython-313\thinc\tests
  copying thinc\tests\test_examples.py -> build\lib.win-amd64-cpython-313\thinc\tests
  copying thinc\tests\test_import__all__.py -> build\lib.win-amd64-cpython-313\thinc\tests
  copying thinc\tests\test_indexing.py -> build\lib.win-amd64-cpython-313\thinc\tests
  copying thinc\tests\test_initializers.py -> build\lib.win-amd64-cpython-313\thinc\tests
  copying thinc\tests\test_loss.py -> build\lib.win-amd64-cpython-313\thinc\tests
  copying thinc\tests\test_optimizers.py -> build\lib.win-amd64-cpython-313\thinc\tests
  copying thinc\tests\test_schedules.py -> build\lib.win-amd64-cpython-313\thinc\tests
  copying thinc\tests\test_serialize.py -> build\lib.win-amd64-cpython-313\thinc\tests
  copying thinc\tests\test_types.py -> build\lib.win-amd64-cpython-313\thinc\tests
  copying thinc\tests\test_util.py -> build\lib.win-amd64-cpython-313\thinc\tests
  copying thinc\tests\util.py -> build\lib.win-amd64-cpython-313\thinc\tests
  copying thinc\tests\__init__.py -> build\lib.win-amd64-cpython-313\thinc\tests
  creating build\lib.win-amd64-cpython-313\thinc\tests\backends
  copying thinc\tests\backends\test_mem.py -> build\lib.win-amd64-cpython-313\thinc\tests\backends
  copying thinc\tests\backends\test_mps_ops.py -> build\lib.win-amd64-cpython-313\thinc\tests\backends
  copying thinc\tests\backends\test_ops.py -> build\lib.win-amd64-cpython-313\thinc\tests\backends
  copying thinc\tests\backends\__init__.py -> build\lib.win-amd64-cpython-313\thinc\tests\backends
  creating build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_basic_tagger.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_combinators.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_feed_forward.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_hash_embed.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_layers_api.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_linear.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_lstm.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_mappers.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_mnist.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_mxnet_wrapper.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_parametric_attention_v2.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_pytorch_wrapper.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_reduce.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_resizable.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_shim.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_softmax.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_sparse_linear.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_tensorflow_wrapper.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_torchscriptwrapper.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_transforms.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_uniqued.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_with_debug.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_with_flatten.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\test_with_transforms.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  copying thinc\tests\layers\__init__.py -> build\lib.win-amd64-cpython-313\thinc\tests\layers
  creating build\lib.win-amd64-cpython-313\thinc\tests\model
  copying thinc\tests\model\test_model.py -> build\lib.win-amd64-cpython-313\thinc\tests\model
  copying thinc\tests\model\test_validation.py -> build\lib.win-amd64-cpython-313\thinc\tests\model
  copying thinc\tests\model\__init__.py -> build\lib.win-amd64-cpython-313\thinc\tests\model
  creating build\lib.win-amd64-cpython-313\thinc\tests\mypy
  copying thinc\tests\mypy\test_mypy.py -> build\lib.win-amd64-cpython-313\thinc\tests\mypy
  copying thinc\tests\mypy\__init__.py -> build\lib.win-amd64-cpython-313\thinc\tests\mypy
  creating build\lib.win-amd64-cpython-313\thinc\tests\regression
  copying thinc\tests\regression\test_issue208.py -> build\lib.win-amd64-cpython-313\thinc\tests\regression
  copying thinc\tests\regression\test_issue564.py -> build\lib.win-amd64-cpython-313\thinc\tests\regression
  copying thinc\tests\regression\__init__.py -> build\lib.win-amd64-cpython-313\thinc\tests\regression
  creating build\lib.win-amd64-cpython-313\thinc\tests\shims
  copying thinc\tests\shims\test_pytorch_grad_scaler.py -> build\lib.win-amd64-cpython-313\thinc\tests\shims
  copying thinc\tests\shims\__init__.py -> build\lib.win-amd64-cpython-313\thinc\tests\shims
  creating build\lib.win-amd64-cpython-313\thinc\tests\backends\_apple_blas
  copying thinc\tests\backends\_apple_blas\test_gemm.py -> build\lib.win-amd64-cpython-313\thinc\tests\backends\_apple_blas
  copying thinc\tests\backends\_apple_blas\__init__.py -> build\lib.win-amd64-cpython-313\thinc\tests\backends\_apple_blas
  creating build\lib.win-amd64-cpython-313\thinc\tests\mypy\modules
  copying thinc\tests\mypy\modules\fail_no_plugin.py -> build\lib.win-amd64-cpython-313\thinc\tests\mypy\modules
  copying thinc\tests\mypy\modules\fail_plugin.py -> build\lib.win-amd64-cpython-313\thinc\tests\mypy\modules
  copying thinc\tests\mypy\modules\success_no_plugin.py -> build\lib.win-amd64-cpython-313\thinc\tests\mypy\modules
  copying thinc\tests\mypy\modules\success_plugin.py -> build\lib.win-amd64-cpython-313\thinc\tests\mypy\modules
  copying thinc\tests\mypy\modules\__init__.py -> build\lib.win-amd64-cpython-313\thinc\tests\mypy\modules
  creating build\lib.win-amd64-cpython-313\thinc\tests\regression\issue519
  copying thinc\tests\regression\issue519\program.py -> build\lib.win-amd64-cpython-313\thinc\tests\regression\issue519
  copying thinc\tests\regression\issue519\test_issue519.py -> build\lib.win-amd64-cpython-313\thinc\tests\regression\issue519
  copying thinc\tests\regression\issue519\__init__.py -> build\lib.win-amd64-cpython-313\thinc\tests\regression\issue519
  running egg_info
  writing thinc.egg-info\PKG-INFO
  writing dependency_links to thinc.egg-info\dependency_links.txt
  writing entry points to thinc.egg-info\entry_points.txt
  writing requirements to thinc.egg-info\requires.txt
  writing top-level names to thinc.egg-info\top_level.txt
  dependency C:\MyPrograms\WinPython\python\Include\Python.h won't be automatically included in the manifest: the path must be relative
  dependency C:\Users\trung\AppData\Local\Temp\pip-build-env-f_r6u657\overlay\Lib\site-packages\numpy\_core\include\numpy\arrayobject.h won't be automatically included in the manifest: the path must be relative
  dependency C:\Users\trung\AppData\Local\Temp\pip-build-env-f_r6u657\overlay\Lib\site-packages\numpy\_core\include\numpy\arrayscalars.h won't be automatically included in the manifest: the path must be relative
  dependency C:\Users\trung\AppData\Local\Temp\pip-build-env-f_r6u657\overlay\Lib\site-packages\numpy\_core\include\numpy\ndarrayobject.h won't be automatically included in the manifest: the path must be relative
  dependency C:\Users\trung\AppData\Local\Temp\pip-build-env-f_r6u657\overlay\Lib\site-packages\numpy\_core\include\numpy\ndarraytypes.h won't be automatically included in the manifest: the path must be relative
  dependency C:\Users\trung\AppData\Local\Temp\pip-build-env-f_r6u657\overlay\Lib\site-packages\numpy\_core\include\numpy\ufuncobject.h won't be automatically included in the manifest: the path must be relative
  dependency C:\MyPrograms\WinPython\python\Include\Python.h won't be automatically included in the manifest: the path must be relative
  dependency C:\Users\trung\AppData\Local\Temp\pip-build-env-f_r6u657\overlay\Lib\site-packages\numpy\_core\include\numpy\arrayobject.h won't be automatically included in the manifest: the path must be relative
  dependency C:\Users\trung\AppData\Local\Temp\pip-build-env-f_r6u657\overlay\Lib\site-packages\numpy\_core\include\numpy\arrayscalars.h won't be automatically included in the manifest: the path must be relative
  dependency C:\Users\trung\AppData\Local\Temp\pip-build-env-f_r6u657\overlay\Lib\site-packages\numpy\_core\include\numpy\ndarrayobject.h won't be automatically included in the manifest: the path must be relative
  dependency C:\Users\trung\AppData\Local\Temp\pip-build-env-f_r6u657\overlay\Lib\site-packages\numpy\_core\include\numpy\ndarraytypes.h won't be automatically included in the manifest: the path must be relative
  dependency C:\Users\trung\AppData\Local\Temp\pip-build-env-f_r6u657\overlay\Lib\site-packages\numpy\_core\include\numpy\ufuncobject.h won't be automatically included in the manifest: the path must be relative
  reading manifest file 'thinc.egg-info\SOURCES.txt'
  reading manifest template 'MANIFEST.in'
  no previously-included directories found matching 'tmp'
  warning: no previously-included files matching '*.cpp' found under directory 'thinc'
  adding license file 'LICENSE'
  writing manifest file 'thinc.egg-info\SOURCES.txt'
  C:\Users\trung\AppData\Local\Temp\pip-build-env-f_r6u657\overlay\Lib\site-packages\setuptools\command\build_py.py:212: _Warning: Package 'thinc.backends' is absent from the `packages` configuration.
  !!

          ********************************************************************************
          ############################
          # Package would be ignored #
          ############################
          Python recognizes 'thinc.backends' as an importable package[^1],
          but it is absent from setuptools' `packages` configuration.

          This leads to an ambiguous overall configuration. If you want to distribute this
          package, please make sure that 'thinc.backends' is explicitly added
          to the `packages` configuration field.

          Alternatively, you can also rely on setuptools' discovery methods
          (for example by using `find_namespace_packages(...)`/`find_namespace:`
          instead of `find_packages(...)`/`find:`).

          You can read more about "package discovery" on setuptools documentation page:

          - https://setuptools.pypa.io/en/latest/userguide/package_discovery.html

          If you don't want 'thinc.backends' to be distributed and are
          already explicitly excluding 'thinc.backends' via
          `find_namespace_packages(...)/find_namespace` or `find_packages(...)/find`,
          you can try to use `exclude_package_data`, or `include-package-data=False` in
          combination with a more fine grained `package-data` configuration.

          You can read more about "package data files" on setuptools documentation page:

          - https://setuptools.pypa.io/en/latest/userguide/datafiles.html


          [^1]: For Python, any directory (with suitable naming) can be imported,
                even if it does not contain any `.py` files.
                On the other hand, currently there is no concept of package data
                directory, all directories are treated like packages.
          ********************************************************************************

  !!
    check.warn(importable)
  C:\Users\trung\AppData\Local\Temp\pip-build-env-f_r6u657\overlay\Lib\site-packages\setuptools\command\build_py.py:212: _Warning: Package 'thinc.layers' is absent from the `packages` configuration.
  !!

          ********************************************************************************
          ############################
          # Package would be ignored #
          ############################
          Python recognizes 'thinc.layers' as an importable package[^1],
          but it is absent from setuptools' `packages` configuration.

          This leads to an ambiguous overall configuration. If you want to distribute this
          package, please make sure that 'thinc.layers' is explicitly added
          to the `packages` configuration field.

          Alternatively, you can also rely on setuptools' discovery methods
          (for example by using `find_namespace_packages(...)`/`find_namespace:`
          instead of `find_packages(...)`/`find:`).

          You can read more about "package discovery" on setuptools documentation page:

          - https://setuptools.pypa.io/en/latest/userguide/package_discovery.html

          If you don't want 'thinc.layers' to be distributed and are
          already explicitly excluding 'thinc.layers' via
          `find_namespace_packages(...)/find_namespace` or `find_packages(...)/find`,
          you can try to use `exclude_package_data`, or `include-package-data=False` in
          combination with a more fine grained `package-data` configuration.

          You can read more about "package data files" on setuptools documentation page:

          - https://setuptools.pypa.io/en/latest/userguide/datafiles.html


          [^1]: For Python, any directory (with suitable naming) can be imported,
                even if it does not contain any `.py` files.
                On the other hand, currently there is no concept of package data
                directory, all directories are treated like packages.
          ********************************************************************************

  !!
    check.warn(importable)
  C:\Users\trung\AppData\Local\Temp\pip-build-env-f_r6u657\overlay\Lib\site-packages\setuptools\command\build_py.py:212: _Warning: Package 'thinc.tests.mypy.configs' is absent from the `packages` configuration.
  !!

          ********************************************************************************
          ############################
          # Package would be ignored #
          ############################
          Python recognizes 'thinc.tests.mypy.configs' as an importable package[^1],
          but it is absent from setuptools' `packages` configuration.

          This leads to an ambiguous overall configuration. If you want to distribute this
          package, please make sure that 'thinc.tests.mypy.configs' is explicitly added
          to the `packages` configuration field.

          Alternatively, you can also rely on setuptools' discovery methods
          (for example by using `find_namespace_packages(...)`/`find_namespace:`
          instead of `find_packages(...)`/`find:`).

          You can read more about "package discovery" on setuptools documentation page:

          - https://setuptools.pypa.io/en/latest/userguide/package_discovery.html

          If you don't want 'thinc.tests.mypy.configs' to be distributed and are
          already explicitly excluding 'thinc.tests.mypy.configs' via
          `find_namespace_packages(...)/find_namespace` or `find_packages(...)/find`,
          you can try to use `exclude_package_data`, or `include-package-data=False` in
          combination with a more fine grained `package-data` configuration.

          You can read more about "package data files" on setuptools documentation page:

          - https://setuptools.pypa.io/en/latest/userguide/datafiles.html


          [^1]: For Python, any directory (with suitable naming) can be imported,
                even if it does not contain any `.py` files.
                On the other hand, currently there is no concept of package data
                directory, all directories are treated like packages.
          ********************************************************************************

  !!
    check.warn(importable)
  C:\Users\trung\AppData\Local\Temp\pip-build-env-f_r6u657\overlay\Lib\site-packages\setuptools\command\build_py.py:212: _Warning: Package 'thinc.tests.mypy.outputs' is absent from the `packages` configuration.
  !!

          ********************************************************************************
          ############################
          # Package would be ignored #
          ############################
          Python recognizes 'thinc.tests.mypy.outputs' as an importable package[^1],
          but it is absent from setuptools' `packages` configuration.

          This leads to an ambiguous overall configuration. If you want to distribute this
          package, please make sure that 'thinc.tests.mypy.outputs' is explicitly added
          to the `packages` configuration field.

          Alternatively, you can also rely on setuptools' discovery methods
          (for example by using `find_namespace_packages(...)`/`find_namespace:`
          instead of `find_packages(...)`/`find:`).

          You can read more about "package discovery" on setuptools documentation page:

          - https://setuptools.pypa.io/en/latest/userguide/package_discovery.html

          If you don't want 'thinc.tests.mypy.outputs' to be distributed and are
          already explicitly excluding 'thinc.tests.mypy.outputs' via
          `find_namespace_packages(...)/find_namespace` or `find_packages(...)/find`,
          you can try to use `exclude_package_data`, or `include-package-data=False` in
          combination with a more fine grained `package-data` configuration.

          You can read more about "package data files" on setuptools documentation page:

          - https://setuptools.pypa.io/en/latest/userguide/datafiles.html


          [^1]: For Python, any directory (with suitable naming) can be imported,
                even if it does not contain any `.py` files.
                On the other hand, currently there is no concept of package data
                directory, all directories are treated like packages.
          ********************************************************************************

  !!
    check.warn(importable)
  copying thinc\__init__.pxd -> build\lib.win-amd64-cpython-313\thinc
  copying thinc\py.typed -> build\lib.win-amd64-cpython-313\thinc
  copying thinc\backends\cblas.cpp -> build\lib.win-amd64-cpython-313\thinc\backends
  copying thinc\backends\cpu_kernels.hh -> build\lib.win-amd64-cpython-313\thinc\backends
  copying thinc\backends\numpy_ops.cpp -> build\lib.win-amd64-cpython-313\thinc\backends
  copying thinc\layers\premap_ids.cpp -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\sparselinear.cpp -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\backends\__init__.pxd -> build\lib.win-amd64-cpython-313\thinc\backends
  copying thinc\backends\_accelerate.pxd -> build\lib.win-amd64-cpython-313\thinc\backends
  copying thinc\backends\_accelerate.pyx -> build\lib.win-amd64-cpython-313\thinc\backends
  copying thinc\backends\_custom_kernels.cu -> build\lib.win-amd64-cpython-313\thinc\backends
  copying thinc\backends\_murmur3.cu -> build\lib.win-amd64-cpython-313\thinc\backends
  copying thinc\backends\apple_ops.pyx -> build\lib.win-amd64-cpython-313\thinc\backends
  copying thinc\backends\cblas.pxd -> build\lib.win-amd64-cpython-313\thinc\backends
  copying thinc\backends\cblas.pyx -> build\lib.win-amd64-cpython-313\thinc\backends
  copying thinc\backends\numpy_ops.pxd -> build\lib.win-amd64-cpython-313\thinc\backends
  copying thinc\backends\numpy_ops.pyx -> build\lib.win-amd64-cpython-313\thinc\backends
  copying thinc\layers\premap_ids.pyx -> build\lib.win-amd64-cpython-313\thinc\layers
  copying thinc\layers\sparselinear.pyx -> build\lib.win-amd64-cpython-313\thinc\layers
  creating build\lib.win-amd64-cpython-313\thinc\tests\mypy\configs
  copying thinc\tests\mypy\configs\mypy-default.ini -> build\lib.win-amd64-cpython-313\thinc\tests\mypy\configs
  copying thinc\tests\mypy\configs\mypy-plugin.ini -> build\lib.win-amd64-cpython-313\thinc\tests\mypy\configs
  creating build\lib.win-amd64-cpython-313\thinc\tests\mypy\outputs
  copying thinc\tests\mypy\outputs\fail-no-plugin.txt -> build\lib.win-amd64-cpython-313\thinc\tests\mypy\outputs
  copying thinc\tests\mypy\outputs\fail-plugin.txt -> build\lib.win-amd64-cpython-313\thinc\tests\mypy\outputs
  copying thinc\tests\mypy\outputs\success-no-plugin.txt -> build\lib.win-amd64-cpython-313\thinc\tests\mypy\outputs
  copying thinc\tests\mypy\outputs\success-plugin.txt -> build\lib.win-amd64-cpython-313\thinc\tests\mypy\outputs
  running build_ext
  building 'thinc.backends.cblas' extension
  creating build\temp.win-amd64-cpython-313\Release\thinc\backends
  "C:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Tools\MSVC\14.44.35207\bin\HostX86\x64\cl.exe" /c /nologo /O2 /W3 /GL /DNDEBUG /MD -IC:\Users\trung\AppData\Local\Temp\pip-build-env-f_r6u657\overlay\Lib\site-packages\numpy\_core\include -IC:\MyPrograms\WinPython\python\Include -IC:\MyPrograms\WinPython\python\include -IC:\MyPrograms\WinPython\python\Include "-IC:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Tools\MSVC\14.44.35207\include" "-IC:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Tools\MSVC\14.44.35207\ATLMFC\include" "-IC:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\VS\include" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.26100.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.26100.0\\um" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.26100.0\\shared" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.26100.0\\winrt" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.26100.0\\cppwinrt" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.8\include\um" /EHsc /Tpthinc/backends/cblas.cpp /Fobuild\temp.win-amd64-cpython-313\Release\thinc\backends\cblas.obj /Ox /EHsc
  cblas.cpp
  thinc/backends/cblas.cpp(871): warning C4996: 'Py_UNICODE': deprecated in 3.13
  thinc/backends/cblas.cpp(872): warning C4996: 'Py_UNICODE': deprecated in 3.13
  thinc/backends/cblas.cpp(1938): error C3861: '_PyList_Extend': identifier not found
  thinc/backends/cblas.cpp(1976): error C3861: '_PyInterpreterState_GetConfig': identifier not found
  thinc/backends/cblas.cpp(20689): error C2660: '_PyLong_AsByteArray': function does not take 5 arguments
  C:\MyPrograms\WinPython\python\Include\cpython/longobject.h(111): note: see declaration of '_PyLong_AsByteArray'
  thinc/backends/cblas.cpp(20689): note: while trying to match the argument list '(PyLongObject *, unsigned char *, size_t, int, bool)'
  thinc/backends/cblas.cpp(20885): error C2660: '_PyLong_AsByteArray': function does not take 5 arguments
  C:\MyPrograms\WinPython\python\Include\cpython/longobject.h(111): note: see declaration of '_PyLong_AsByteArray'
  thinc/backends/cblas.cpp(20885): note: while trying to match the argument list '(PyLongObject *, unsigned char *, size_t, int, bool)'
  thinc/backends/cblas.cpp(21157): error C2660: '_PyLong_AsByteArray': function does not take 5 arguments
  C:\MyPrograms\WinPython\python\Include\cpython/longobject.h(111): note: see declaration of '_PyLong_AsByteArray'
  thinc/backends/cblas.cpp(21157): note: while trying to match the argument list '(PyLongObject *, unsigned char *, size_t, int, bool)'
  error: command 'C:\\Program Files\\Microsoft Visual Studio\\2022\\Enterprise\\VC\\Tools\\MSVC\\14.44.35207\\bin\\HostX86\\x64\\cl.exe' failed with exit code 2
  [end of output]

note: This error originates from a subprocess, and is likely not a problem with pip.
ERROR: Failed building wheel for thinc
Failed to build thinc
error: failed-wheel-build-for-install

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

[jovan2009]

I came here to complain about the same issue. I found out that the latest release is 8.3.8:
https://github.com/explosion/thinc/releases/tag/release-v8.3.8

I don't understand why pip list -o shows 9.1.1 as the last version. Probably because of this:
https://pypi.org/project/thinc/#history

9.1.1 from September 2024 is the "last" version. Meanwhile 8.3.8 from November 2025 is an "old" version. I'm not sure what's the cause for this situation.

[honnibal]

I realise this is a bit frustrating, basically plans to update spaCy to v4 have been put on hold and it's left Thinc v9 a bit stranded.

However in general you probably don't want to be doing something like pip install -U ... for something that's just a dependency, because you're not necessarily going to get a compatible version. You can also do --only-binary in your pip commands to make sure you get a wheel.

[chamalgomes]

I think there was an issue with uploading the wheels for thing v8.3.8 no ? When I try to install thinc==8.3.8, it defaults to source build rather than using pre-built wheel. Ref: https://github.com/explosion/thinc/actions/runs/19314540027

FYI - I use uv for spacy + thinc installation

[honnibal]

@ChamalGomesHSO You're right, thanks. Fixing that now.

[chamalgomes]

@honnibal thanks for the fix, confirming the wheel installation works for py314.

NB: Think there is a similar issue for Spacy but only for py314 wheels cuz it was missed from the build process, created issue here explosion/spaCy#13893

[rgommers]

@honnibal one option to address this installation paper cut would be to yank the 9.x releases. That won't break users who have pinned a particular release, but it will ensure that pip install thinc or pip install -U thinc will resolve to the most recent 8.x release. Did you consider doing that?

[honnibal]

Annoyingly there's a dev build of spaCy v4 that is in some ways useful and requires Thinc v9.

I suggest instead leap-frogging to v10.

[rgommers]

Ah, that is unfortunate. Releasing a v10 sounds like a great solution then.