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

unstructured-haystack
0.0.4

This version was deleted from PyPI around 2023-10-21. Installing fails with:
$ pip3 install unstructured-haystack==0.0.4 ERROR: Could not find a version that satisfies the requirement unstructured-haystack==0.0.4
View other deleted versions of unstructured-haystack

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/2023-10-20/ \ unstructured-haystack==0.0.4
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Or, download files manually

And install manually via pip:
unstructured_haystack-0.0.4-py3-none-any.whl (6.6KB)
unstructured_haystack-0.0.4.tar.gz (4.4KB)