You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.

sherpa-onnx
0.0.4

This version was deleted from PyPI around 2025-08-24. Installing fails with:
$ pip3 install sherpa-onnx==0.0.4 ERROR: Could not find a version that satisfies the requirement sherpa-onnx==0.0.4