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

evomsa
0.43

This version was deleted from PyPI around 2023-11-28. Installing fails with:
$ pip3 install evomsa==0.43 ERROR: Could not find a version that satisfies the requirement evomsa==0.43
View other deleted versions of evomsa

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/2023-11-27/ \ evomsa==0.43
Sign up for StableBuild to get an API key (it's free and takes <60 seconds!)

Or, download files manually

And install manually via pip:
EvoMSA-0.43-cp35-cp35m-macosx_10_6_x86_64.whl (127.3KB)
EvoMSA-0.43-cp36-cp36m-macosx_10_7_x86_64.whl (134.3KB)
EvoMSA-0.43-cp37-cp37m-macosx_10_7_x86_64.whl (134.2KB)
EvoMSA-0.43.tar.gz (106.8KB)