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

pyncm

This package was deleted from PyPI around 2026-05-02. Installing fails with:
$ pip3 install pyncm ERROR: Could not find a version that satisfies the requirement pyncm (from versions: none) ERROR: No matching distribution found for pyncm

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/2026-05-01/ \ pyncm
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