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

skyfire-sdk
0.6.6

This version was deleted from PyPI around 2025-08-06. Installing fails with:
$ pip3 install skyfire-sdk==0.6.6 ERROR: Could not find a version that satisfies the requirement skyfire-sdk==0.6.6
View other deleted versions of skyfire-sdk

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/2025-08-05/ \ skyfire-sdk==0.6.6
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:
skyfire_sdk-0.6.6-py3-none-any.whl (145.3KB)
skyfire_sdk-0.6.6.tar.gz (72.7KB)