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

bigdl-orca-spark2
2.5.0b20231226

This version was deleted from PyPI around 2024-01-17. Installing fails with:
$ pip3 install bigdl-orca-spark2==2.5.0b20231226 ERROR: Could not find a version that satisfies the requirement bigdl-orca-spark2==2.5.0b20231226
View other deleted versions of bigdl-orca-spark2

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/2024-01-16/ \ bigdl-orca-spark2==2.5.0b20231226
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Or, download files manually

And install manually via pip:
bigdl_orca_spark2-2.5.0b20231226-py3-none-macosx_10_11_x86_64.whl (23.4MB)
bigdl_orca_spark2-2.5.0b20231226-py3-none-manylinux1_x86_64.whl (19.4MB)