You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
liblapack3 was reported malicious
OSV:MAL-2023-8305 - Malicious code in liblapack3 (PyPI)

liblapack3
0.0.2

This version was deleted from PyPI around 2023-10-13. Installing fails with:
$ pip3 install liblapack3==0.0.2 ERROR: Could not find a version that satisfies the requirement liblapack3==0.0.2
View other deleted versions of liblapack3

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/2023-10-12/ \ liblapack3==0.0.2
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Or, download files manually

And install manually via pip:
liblapack3-0.0.2.tar.gz (1.8KB)