Poor compatibility with Python 3.14+NumPy 2.3.3

Non sono indicati file del repository né test. Inizia riproducendo l’importazione di cv2 con Python 3.14 e NumPy 2.3.3, quindi ispeziona i metadati di build e delle dipendenze del pacchetto per il wheel generato. Il lavoro è completato quando il pacchetto viene importato correttamente e i requisiti NumPy dichiarati corrispondono alla compatibilità a runtime.

This issue was raised last year, but the version involved was Py 3.10 and 3.11, so an additional issue is being proposed for compatibility with the new version.

Python 3.14.0 (tags/v3.14.0:ebf955d, Oct  7 2025, 10:15:03) [MSC v.1944 64 bit (AMD64)] on win32
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>>> import cv2

A module that was compiled using NumPy 1.x cannot be run in
NumPy 2.3.3 as it may crash. To support both 1.x and 2.x
versions of NumPy, modules must be compiled with NumPy 2.0.
Some module may need to rebuild instead e.g. with 'pybind11>=2.12'.

If you are a user of the module, the easiest solution will be to
downgrade to 'numpy<2' or try to upgrade the affected module.
We expect that some modules will need time to support NumPy 2.

Traceback (most recent call last):  File "R:\Python314\Lib\_pyrepl\main.py", line 58, in interactive_console
    run_multiline_interactive_console(console)
  File "R:\Python314\Lib\_pyrepl\simple_interact.py", line 151, in run_multiline_interactive_console
    more = console.push(_strip_final_indent(statement), filename=input_name, _symbol="single")  # type: ignore[call-arg]
  File "R:\Python314\Lib\code.py", line 324, in push
    more = self.runsource(source, filename, symbol=_symbol)
  File "R:\Python314\Lib\_pyrepl\console.py", line 226, in runsource
    result = self.runcode(code)
  File "R:\Python314\Lib\_pyrepl\console.py", line 181, in runcode
    exec(code, self.locals)
  File "<python-input-0>", line 1, in <module>
    import cv2
  File "W:\cv2\__init__.py", line 181, in <module>
    bootstrap()
  File "W:\cv2\__init__.py", line 153, in bootstrap
    native_module = importlib.import_module("cv2")
  File "R:\Python314\Lib\importlib\__init__.py", line 88, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
AttributeError: _ARRAY_API not found
Traceback (most recent call last):
  File "<python-input-0>", line 1, in <module>
    import cv2
  File "W:\cv2\__init__.py", line 181, in <module>
    bootstrap()
    ~~~~~~~~~^^
  File "W:\cv2\__init__.py", line 153, in bootstrap
    native_module = importlib.import_module("cv2")
  File "R:\Python314\Lib\importlib\__init__.py", line 88, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ImportError: numpy.core.multiarray failed to import
>>>

after downgraded to np1.26.4:

ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.
opencv-contrib-python 4.13.0.90 requires numpy>=2; python_version >= "3.9", but you have numpy 1.26.4 which is incompatible.
opencv-python 4.13.0.90 requires numpy>=2; python_version >= "3.9", but you have numpy 1.26.4 which is incompatible.

（note：it requires numpy2 while installation, but numpy 1 during runtime）
（WHAT THE F**K IS THIS???