test_subclass_conversion fails with Numpy 2.x

[FliegendeWurst]

Describe the bug

Test fails with

=================================== FAILURES ===================================
_______________ TestOutputPreprocessing.test_subclass_conversion _______________

self = <test.test_processing_utils.TestOutputPreprocessing object at 0x7ffcc651b110>

    def test_subclass_conversion(self):
        """Check subclass conversion behavior"""
        x = np.array([-1, 1])
        for dtype in TestOutputPreprocessing.float_dtype_list:
            x = x.astype(dtype)
            y = processing_utils._convert(x, np.floating)
>           assert y.dtype == x.dtype
E           AssertionError: assert dtype('float64') == dtype('float32')
E            +  where dtype('float64') = array([-1.,  1.]).dtype
E            +  and   dtype('float32') = array([-1.,  1.], dtype=float32).dtype

test/test_processing_utils.py:260: AssertionError

It seems the _convert function no longer sets the correct dtype.

Have you searched existing issues? 🔎

• I have searched and found no existing issues

Reproduction

Run the test suite.

I ran the test suite using the nixpkgs package. You can see the full log here: https://hydra.nixos.org/build/283956666/nixlog/1

Screenshot

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Logs

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System Info

I can't build gradio, so I cannot run gradio environment.
If you need the version of specific dependencies you can check https://search.nixos.org/packages?channel=unstable&from=0&size=50&sort=relevance&type=packages&query=python312Packages

Severity

I can work around it

[FliegendeWurst]

Oh, it seems I wasn't using the latest version. I will check again with 5.9.1.

[FliegendeWurst]

Hmm.. just checked again and I still see the failure, even with 5.9.1. Not to mention that the linked PR was included in much earlier versions too.

[abidlabs]

Can reproduce, taking a look