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

neqsim
2.0.29

This version was deleted from PyPI around 2024-08-28. Installing fails with:
$ pip3 install neqsim==2.0.29 ERROR: Could not find a version that satisfies the requirement neqsim==2.0.29
View other deleted versions of neqsim

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/2024-08-27/ \ neqsim==2.0.29
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Or, download files manually

And install manually via pip:
neqsim-2.0.29-py3-none-any.whl (60.3MB)
neqsim-2.0.29.tar.gz (9.5KB)