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

mojo-runtime
1.3.30

This version was deleted from PyPI around 2025-09-05. Installing fails with:
$ pip3 install mojo-runtime==1.3.30 ERROR: Could not find a version that satisfies the requirement mojo-runtime==1.3.30
View other deleted versions of mojo-runtime

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/2025-09-04/ \ mojo-runtime==1.3.30
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:
mojo_runtime-1.3.30-py3-none-any.whl (16.5KB)
mojo_runtime-1.3.30.tar.gz (12.8KB)