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

caelum-sys
0.1.3

This version was deleted from PyPI around 2025-08-04. Installing fails with:
$ pip3 install caelum-sys==0.1.3 ERROR: Could not find a version that satisfies the requirement caelum-sys==0.1.3
View other deleted versions of caelum-sys

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/2025-08-03/ \ caelum-sys==0.1.3
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:
caelum_sys-0.1.3-py3-none-any.whl (11.1KB)
caelum_sys-0.1.3.tar.gz (9.6KB)