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

gslpy
0.0.0

This version was deleted from PyPI around 2024-03-01. Installing fails with:
$ pip3 install gslpy==0.0.0 ERROR: Could not find a version that satisfies the requirement gslpy==0.0.0
View other deleted versions of gslpy

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/2024-02-29/ \ gslpy==0.0.0
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Or, download files manually

And install manually via pip:
gslpy-0.0.0-py3-none-any.whl (1.2KB)
gslpy-0.0.0.tar.gz (0.9KB)