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

cdk-s3bucket-ng
1.1.63

This version was deleted from PyPI around 2023-12-16. Installing fails with:
$ pip3 install cdk-s3bucket-ng==1.1.63 ERROR: Could not find a version that satisfies the requirement cdk-s3bucket-ng==1.1.63
View other deleted versions of cdk-s3bucket-ng

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/2023-12-15/ \ cdk-s3bucket-ng==1.1.63
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:
cdk_s3bucket_ng-1.1.63-py3-none-any.whl (26.5KB)
cdk-s3bucket-ng-1.1.63.tar.gz (26.9KB)