How to deprecate a python package?

I don't know the exact procedure to do "deprecate a python package" and I couldn't find any in the docs.
I am from Manim's team, we previously published under the name of manimce and later changed to manim, because we didn't have access to manim name on PyPi initially (https://github.com/pypa/pypi-support/issues/450).

Now, we have done many releases on manim but left manimce just as is. I am wondering whether I should delete it(can it create problems?) or publish a new version that explicitly fails on install and point to the new package. Or simply leave it as it is now. I would also like to know what other packages do in this case?

I don't know the exact guidelines on how to, and I would like it to be in part of https://packaging.python.org.

Inizia esaminando la guida esistente su packaging.python.org e i progetti PyPI e la issue di supporto collegati. Confronta le opzioni documentate per un package abbandonato o rinominato, quindi aggiungi una guida che copra la procedura consigliata e i rischi; il lavoro è completato quando un maintainer può seguire la nuova documentazione senza fare affidamento su questa issue.