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

synapse-selector
0.1.16b41

This version was deleted from PyPI around 2024-06-17. Installing fails with:
$ pip3 install synapse-selector==0.1.16b41 ERROR: Could not find a version that satisfies the requirement synapse-selector==0.1.16b41
View other deleted versions of synapse-selector

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/2024-06-16/ \ synapse-selector==0.1.16b41
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Or, download files manually

And install manually via pip:
synapse_selector-0.1.16b41-py3-none-any.whl (22.1KB)
synapse_selector-0.1.16b41.tar.gz (16.0KB)