ASR tutorial / convert_hf_dataset_to_nemo.py broken with Common Voice 17.0

[zefang-liu]

Describe the bug

convert_hf_dataset_to_nemo.py (used in ASR CTC Language Finetuning tutorial) fails with Common Voice 17.0 because trust_remote_code is no longer supported in datasets. The dataset loader script (common_voice_17_0.py) cannot be used anymore.

Steps/Code to reproduce bug

!python convert_hf_dataset_to_nemo.py \
    output_dir=datasets/en \
    path=mozilla-foundation/common_voice_17_0 \
    name=en \
    split=train \
    use_auth_token=True

Error

[2025-08-28 05:01:24,467][datasets.load][ERROR] - `trust_remote_code` is not supported anymore.
Please check that the Hugging Face dataset 'mozilla-foundation/common_voice_17_0' isn't based on a loading script and remove `trust_remote_code`.
If the dataset is based on a loading script, please ask the dataset author to remove it and convert it to a standard format like Parquet.
HuggingFace datasets failed due to some reason (stack trace below). 
For certain datasets (eg: MCV), it may be necessary to login to the huggingface-cli (via `huggingface-cli login`).
Once logged in, you need to set `use_auth_token=True` when calling this script.

Traceback error for reference :

Traceback (most recent call last):
  File "/content/convert_hf_dataset_to_nemo.py", line 361, in main
    dataset = load_dataset(
              ^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/dist-packages/datasets/load.py", line 1392, in load_dataset
    builder_instance = load_dataset_builder(
                       ^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/dist-packages/datasets/load.py", line 1132, in load_dataset_builder
    dataset_module = dataset_module_factory(
                     ^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/dist-packages/datasets/load.py", line 1031, in dataset_module_factory
    raise e1 from None
  File "/usr/local/lib/python3.12/dist-packages/datasets/load.py", line 989, in dataset_module_factory
    raise RuntimeError(f"Dataset scripts are no longer supported, but found {filename}")
RuntimeError: Dataset scripts are no longer supported, but found common_voice_17_0.py

Expected behavior

Script should load the Parquet-backed version of Common Voice 17.0 and generate NeMo-compatible manifests without requiring deprecated loader scripts or trust_remote_code.

Environment overview (please complete the following information)

• Environment location: Google Colab
• Method of NeMo install: python -m pip install git+https://github.com/NVIDIA/NeMo.git@main#egg=nemo_toolkit[all]

Environment details

• OS version: Ubuntu 22.04.4 LTS
• PyTorch version: 2.8.0+cu126
• Python version: 3.12.11

Additional context

• trust_remote_code can be removed from the script.
• The ASR tutorial can be updated to reflect this change.