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

bigdl-core-npu
2.6.0b20250123

This version was deleted from PyPI around 2025-03-31. Installing fails with:
$ pip3 install bigdl-core-npu==2.6.0b20250123 ERROR: Could not find a version that satisfies the requirement bigdl-core-npu==2.6.0b20250123
View other deleted versions of bigdl-core-npu

Install through StableBuild

You can install this package from StableBuild's PyPI snapshots from before the version was deleted:
pip3 install \ -i https://YOUR_API_KEY.pypimirror.stablebuild.com/2025-03-30/ \ bigdl-core-npu==2.6.0b20250123
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Or, download files manually

And install manually via pip:
bigdl_core_npu-2.6.0b20250123-cp310-cp310-win_amd64.whl (71.4MB)
bigdl_core_npu-2.6.0b20250123-cp311-cp311-win_amd64.whl (71.4MB)