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

regexapp
0.3.5

This version was deleted from PyPI around 2025-12-12. Installing fails with:
$ pip3 install regexapp==0.3.5 ERROR: Could not find a version that satisfies the requirement regexapp==0.3.5
View other deleted versions of regexapp

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/2025-12-11/ \ regexapp==0.3.5
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Or, download files manually

And install manually via pip:
regexapp-0.3.5-py3-none-any.whl (38.2KB)
regexapp-0.3.5.tar.gz (35.4KB)