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

jupyterlab-env-kernel
0.1.5

This version was deleted from PyPI around 2026-03-02. Installing fails with:
$ pip3 install jupyterlab-env-kernel==0.1.5 ERROR: Could not find a version that satisfies the requirement jupyterlab-env-kernel==0.1.5
View other deleted versions of jupyterlab-env-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/2026-03-01/ \ jupyterlab-env-kernel==0.1.5
Sign up for StableBuild to get an API key (it's free and takes <60 seconds!)

Or, download files manually

And install manually via pip:
jupyterlab_env_kernel-0.1.5-py3-none-any.whl (21.3KB)
jupyterlab_env_kernel-0.1.5.tar.gz (146.8KB)