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You probably need to push 6.8.0.2 with fixes for the package metadata. It is marked as compatible with > 3.9 and < 3.13, so pip refuses to install the wheels.
$ python --version
Python 3.13.0
$ pip install PySide6-Essentials
[…]
ERROR: Could not find a version that satisfies the requirement PySide6-Essentials (from versions: none)
ERROR: No matching distribution found for PySide6-Essentials