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

flet-runtime
0.20.0

This version was deleted from PyPI around 2024-04-04. Installing fails with:
$ pip3 install flet-runtime==0.20.0 ERROR: Could not find a version that satisfies the requirement flet-runtime==0.20.0
View other deleted versions of flet-runtime

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/2024-04-03/ \ flet-runtime==0.20.0
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Or, download files manually

And install manually via pip:
flet_runtime-0.20.0-py3-none-any.whl (22.2KB)
flet_runtime-0.20.0.tar.gz (16.6KB)