Soxbindings problem python3.7

[turpaultn]

MacOS
conda environment in 3.7: pip install scaper

MWE

import scaper
sc = scaper.Scaper(1, "data/soundbank/audio/train/soundbank/foreground", "data/soundbank/audio/train/soundbank/background")
sc.add_background(("choose", []), ("choose", []), ("const", 0))
sc.generate()

Note: for this issue, I tried an environment in python 3.9 too just in case, the problem doesn't appear anymore.

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/anaconda3/envs/py37/lib/python3.7/site-packages/scaper/core.py", line 2274, in generate
    quick_pitch_time=quick_pitch_time)
  File "/anaconda3/envs/py37/lib/python3.7/site-packages/scaper/core.py", line 1906, in _generate_audio
    sample_rate_in=event_sr
  File "/anaconda3/envs/py37/lib/python3.7/site-packages/soxbindings/transform.py", line 62, in build_array
    extra_args=extra_args)
  File "/anaconda3/envs/py37/lib/python3.7/site-packages/soxbindings/transform.py", line 55, in build
    output_audio, sample_rate_out = sox(args, input_array, sample_rate_in)
  File "/anaconda3/envs/py37/lib/python3.7/site-packages/soxbindings/sox_cli.py", line 65, in sox
    available_fx = get_available_effects()
  File "/anaconda3/envs/py37/lib/python3.7/site-packages/soxbindings/effects.py", line 8, in get_available_effects
    from . import _soxbindings
ImportError: dlopen(/anaconda3/envs/py37/lib/python3.7/site-packages/soxbindings/_soxbindings.cpython-37m-darwin.so, 2): Symbol not found: ____chkstk_darwin
  Referenced from: /anaconda3/envs/py37/lib/python3.7/site-packages/soxbindings/.dylibs/libFLAC.8.dylib (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib
 in /anaconda3/envs/py37/lib/python3.7/site-packages/soxbindings/.dylibs/libFLAC.8.dylib

[pseeth]

Seems like you might be missing a .flac decoder in your 3.7 environment? I just tried it in a fresh 3.7 conda environment, converted a file to FLAC and gave your script a shot with some modifications and it works okay for me. Though, soxbindings should be shipping with everything you need...but for now I can't reproduce. Perhaps try installing libflac?

[turpaultn]

Indeed, my problem is solved, thank you !
What I had to do: install soxbindings from source, because it seems I have a version of OS X too old.

ImportError: dlopen(/anaconda3/envs/desed/lib/python3.6/site-packages/soxbindings/_soxbindings.cpython-36m-darwin.so, 2): Symbol not found: ____chkstk_darwin
  Referenced from: /anaconda3/envs/desed/lib/python3.6/site-packages/soxbindings/.dylibs/libFLAC.8.dylib (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib
 in /anaconda3/envs/desed/lib/python3.6/site-packages/soxbindings/.dylibs/libFLAC.8.dylib

[dilipupf]

what does installing soxbindings from source mean?