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

streamlit-arborist
0.1.0rc0

This version was deleted from PyPI around 2025-08-21. Installing fails with:
$ pip3 install streamlit-arborist==0.1.0rc0 ERROR: Could not find a version that satisfies the requirement streamlit-arborist==0.1.0rc0
View other deleted versions of streamlit-arborist

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/2025-08-20/ \ streamlit-arborist==0.1.0rc0
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Or, download files manually

And install manually via pip:
streamlit_arborist-0.1.0rc0-py3-none-any.whl (194.7KB)
streamlit_arborist-0.1.0rc0.tar.gz (301.5KB)