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

ns-asphalt9
0.6.21

This version was deleted from PyPI around 2024-06-17. Installing fails with:
$ pip3 install ns-asphalt9==0.6.21 ERROR: Could not find a version that satisfies the requirement ns-asphalt9==0.6.21
View other deleted versions of ns-asphalt9

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/2024-06-16/ \ ns-asphalt9==0.6.21
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Or, download files manually

And install manually via pip:
ns_asphalt9-0.6.21-py3-none-any.whl (260.2KB)
ns_asphalt9-0.6.21.tar.gz (256.1KB)