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

kotlin-jupyter-kernel
0.11.0.61

This version was deleted from PyPI around 2024-03-25. Installing fails with:
$ pip3 install kotlin-jupyter-kernel==0.11.0.61 ERROR: Could not find a version that satisfies the requirement kotlin-jupyter-kernel==0.11.0.61
View other deleted versions of kotlin-jupyter-kernel

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/2024-03-24/ \ kotlin-jupyter-kernel==0.11.0.61
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Or, download files manually

And install manually via pip:
kotlin_jupyter_kernel-0.11.0.61-py3-none-any.whl (70.2MB)