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

truss
0.10.0rc1

This version was deleted from PyPI around 2024-06-21. Installing fails with:
$ pip3 install truss==0.10.0rc1 ERROR: Could not find a version that satisfies the requirement truss==0.10.0rc1
View other deleted versions of truss

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/2024-06-20/ \ truss==0.10.0rc1
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Or, download files manually

And install manually via pip:
truss-0.10.0rc1-py3-none-any.whl (238.9KB)
truss-0.10.0rc1.tar.gz (169.5KB)