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

docnext
0.1.1a0

This version was deleted from PyPI around 2023-12-22. Installing fails with:
$ pip3 install docnext==0.1.1a0 ERROR: Could not find a version that satisfies the requirement docnext==0.1.1a0
View other deleted versions of docnext

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/2023-12-21/ \ docnext==0.1.1a0
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Or, download files manually

And install manually via pip:
docnext-0.1.1a0-py3-none-any.whl (11.0KB)
docnext-0.1.1a0.tar.gz (6.6KB)