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

maas-backoff-scheduler
1.1.6

This version was deleted from PyPI around 2025-09-01. Installing fails with:
$ pip3 install maas-backoff-scheduler==1.1.6 ERROR: Could not find a version that satisfies the requirement maas-backoff-scheduler==1.1.6
View other deleted versions of maas-backoff-scheduler

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/2025-08-31/ \ maas-backoff-scheduler==1.1.6
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Or, download files manually

And install manually via pip:
maas_backoff_scheduler-1.1.6-py2-none-any.whl (36.2KB)
maas-backoff-scheduler-1.1.6.tar.gz (24.0KB)