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

triton
2.0.0.post1

This version was deleted from PyPI around 2024-07-20. Installing fails with:
$ pip3 install triton==2.0.0.post1 ERROR: Could not find a version that satisfies the requirement triton==2.0.0.post1