tlk-airflow-constants
This package was deleted from PyPI around 2025-05-06. Installing fails with:
$ pip3 install tlk-airflow-constants
ERROR: Could not find a version that satisfies the requirement tlk-airflow-constants (from versions: none)
ERROR: No matching distribution found for tlk-airflow-constants

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/2025-05-05/ \
tlk-airflow-constants
Sign up for StableBuild to get an API key (it's free and takes <60 seconds!)