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

icpp-free
2.8.1

This version was deleted from PyPI around 2024-06-19. Installing fails with:
$ pip3 install icpp-free==2.8.1 ERROR: Could not find a version that satisfies the requirement icpp-free==2.8.1
View other deleted versions of icpp-free

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/2024-06-18/ \ icpp-free==2.8.1
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Or, download files manually

And install manually via pip:
icpp_free-2.8.1-py3-none-any.whl (215.5KB)