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

volumen
0.4.2

This version was deleted from PyPI around 2026-10-12. Installing fails with:
$ pip3 install volumen==0.4.2 ERROR: Could not find a version that satisfies the requirement volumen==0.4.2
View other deleted versions of volumen

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/2026-10-11/ \ volumen==0.4.2
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:
volumen-0.4.2-py3-none-any.whl (80.3KB)
volumen-0.4.2.tar.gz (100.4KB)