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

aws-cdk-lib
2.0.0a5

This version was deleted from PyPI around 2024-06-29. Installing fails with:
$ pip3 install aws-cdk-lib==2.0.0a5 ERROR: Could not find a version that satisfies the requirement aws-cdk-lib==2.0.0a5
View other deleted versions of aws-cdk-lib

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/2024-06-28/ \ aws-cdk-lib==2.0.0a5
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:
aws_cdk_lib-2.0.0a5-py3-none-any.whl (49.1MB)
aws-cdk-lib-2.0.0a5.tar.gz (48.9MB)