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

21cmsense
2.2.1

This version was deleted from PyPI around 2026-08-05. Installing fails with:
$ pip3 install 21cmsense==2.2.1 ERROR: Could not find a version that satisfies the requirement 21cmsense==2.2.1
View other deleted versions of 21cmsense

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/2026-08-04/ \ 21cmsense==2.2.1
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Or, download files manually

And install manually via pip:
21cmsense-2.2.1-py3-none-any.whl (256.4KB)
21cmsense-2.2.1.tar.gz (2.3MB)