Fixed ModuleNotFoundError: No module named 'numba.decorators'

[SamuelLarkin]

Hi,
I got the following error message trying python train.py --help

Traceback (most recent call last):
  File "../train.py", line 16, in <module>
    from meldataset import MelDataset, mel_spectrogram, get_dataset_filelist
  File "/gpfs/fs1/nrc/ict/others/u/sam037/tts/hifi-gan.git/meldataset.py", line 7, in <module>
    from librosa.util import normalize
  File "/home/sam037/.conda/envs/hifi-gan-TTS/lib/python3.8/site-packages/librosa/__init__.py", line 12, in <module>
    from . import core
  File "/home/sam037/.conda/envs/hifi-gan-TTS/lib/python3.8/site-packages/librosa/core/__init__.py", line 125, in <module>
    from .time_frequency import *  # pylint: disable=wildcard-import
  File "/home/sam037/.conda/envs/hifi-gan-TTS/lib/python3.8/site-packages/librosa/core/time_frequency.py", line 11, in <module>
    from ..util.exceptions import ParameterError
  File "/home/sam037/.conda/envs/hifi-gan-TTS/lib/python3.8/site-packages/librosa/util/__init__.py", line 77, in <module>
    from .utils import *  # pylint: disable=wildcard-import
  File "/home/sam037/.conda/envs/hifi-gan-TTS/lib/python3.8/site-packages/librosa/util/utils.py", line 15, in <module>
    from .decorators import deprecated
  File "/home/sam037/.conda/envs/hifi-gan-TTS/lib/python3.8/site-packages/librosa/util/decorators.py", line 9, in <module>
    from numba.decorators import jit as optional_jit
ModuleNotFoundError: No module named 'numba.decorators'

A quick google search reveals that numba removed the decorators module with version 0.50 and simply pinning the version to numba==0.48 fixes the issue.

Create a conda environment

conda create --name hifi-gan-TTS  python=3.8
conda activate hifi-gan-TTS
conda install --channel pytorch pytorch=1.4.0
pip install -r requirements.txt

[kaveenkumar]

thanks for correcting the numba version and ordering the requirements.txt.
Approved!