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

landmarker
0.1.2a0

This version was deleted from PyPI around 2024-11-04. Installing fails with:
$ pip3 install landmarker==0.1.2a0 ERROR: Could not find a version that satisfies the requirement landmarker==0.1.2a0
View other deleted versions of landmarker

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/2024-11-03/ \ landmarker==0.1.2a0
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Or, download files manually

And install manually via pip:
landmarker-0.1.2a0-py3-none-any.whl (55.9KB)
landmarker-0.1.2a0.tar.gz (62.5KB)