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

nautobot-app-custom-tunnel-builder
0.2.3a1

This version was deleted from PyPI around 2026-03-11. Installing fails with:
$ pip3 install nautobot-app-custom-tunnel-builder==0.2.3a1 ERROR: Could not find a version that satisfies the requirement nautobot-app-custom-tunnel-builder==0.2.3a1
View other deleted versions of nautobot-app-custom-tunnel-builder

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/2026-03-10/ \ nautobot-app-custom-tunnel-builder==0.2.3a1
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:
nautobot_app_custom_tunnel_builder-0.2.3a1-py3-none-any.whl (15.7KB)
nautobot_app_custom_tunnel_builder-0.2.3a1.tar.gz (12.9KB)