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

reference-package
0.5.10

This version was deleted from PyPI around 2025-03-07. Installing fails with:
$ pip3 install reference-package==0.5.10 ERROR: Could not find a version that satisfies the requirement reference-package==0.5.10
View other deleted versions of reference-package

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/2025-03-06/ \ reference-package==0.5.10
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Or, download files manually

And install manually via pip:
reference_package-0.5.10-py3-none-any.whl (10.3KB)
reference_package-0.5.10.tar.gz (14.2KB)