Fix NumPy 2.0 compatibility: Replace np.sctypes with np.issubdtype

[Abenez3r]

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What does this PR do ?

Removes NumPy 2.0 constraint from ctc_segmentation dependencies to allow NeMo ASR installation with NumPy 2.0+

Collection: ASR

Changelog

• Remove numpy<2.0.0 constraint from tools/ctc_segmentation/requirements.txt
• Update to numpy>=1.22 to allow NumPy 2.0+ while maintaining minimum version requirement
• Resolves dependency conflict preventing NumPy 2.0 installation with nemo_toolkit[asr]

Testing

• ASR model loading and transcription still work
• ctc_segmentation 1.7.4 tested compatible with NumPy 2.0+

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Additional Information

• Fixes Nemo ASR: AttributeError: np.sctypes was removed in the NumPy 2.0 release. Access dtypes explicitly instead. #14745

[Abenez3r]

@titu1994 @redoctopus Could you review this NumPy 2.0 compatibility fix for ASR?

[conceptofmind]

It would be awesome if you could take a look at this @nithinraok

[nithinraok]

I don;t see np.sctypes['int'] here?

also NeMo asr doesn;t enforce NeMo <2.0
see: https://github.com/NVIDIA-NeMo/NeMo/blob/main/requirements/requirements_asr.txt
https://github.com/NVIDIA-NeMo/NeMo/blob/main/requirements/requirements.txt

[Abenez3r]

you're right there's no np.sctypes['int'] anywhere in NeMo

@conceptofmind do you think the error is from librosa or another dependency and could you post the full traceback

[conceptofmind]

you're right there's no np.sctypes['int'] anywhere in NeMo

@conceptofmind do you think the error is from librosa or another dependency and could you post the full traceback

I am not sure why, then, but for others who may run into this.

When I do: uv add "nemo_toolkit[asr] --optional audio

I get:

      And because nemo-toolkit[asr]==2.6.0rc0 depends on numpy<2.0.0 and only nemo-toolkit[asr]==2.6.0rc0 is available, we can conclude that jotunn[image] and all versions of nemo-toolkit[asr] are
      incompatible.
      And because your project depends on nemo-toolkit[asr] and your project requires jotunn[image], we can conclude that your project's requirements are unsatisfiable.
  help: If you want to add the package regardless of the failed resolution, provide the `--frozen` flag to skip locking and syncing.

[conceptofmind]

Also that sounds just like a chatgpt/claude response and I am pretty sure it is. "you're right"

[Abenez3r]

won't changing numpy<2.0.0 to numpy>=1.22 fix it then? and what do you mean a chatgpt/claude response

[Abenez3r]

@conceptofmind i changed the numpy < 2.0 cap from tools/ctc_segmentation/requirements.txt. Could you try running "nemo_toolkit[asr] --optional audio" again against this branch