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

yamc
0.4.1

This version was deleted from PyPI around 2026-06-16. Installing fails with:
$ pip3 install yamc==0.4.1 ERROR: Could not find a version that satisfies the requirement yamc==0.4.1
View other deleted versions of yamc

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/2026-06-15/ \ yamc==0.4.1
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Or, download files manually

And install manually via pip:
yamc-0.4.1-cp310-abi3-macosx_11_0_arm64.whl (4.4MB)
yamc-0.4.1-cp310-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (11.1MB)
yamc-0.4.1-cp310-abi3-win_amd64.whl (10.3MB)