There's a closed pull request on the void-packages repository

[DO NOT MERGE] python3-ipython: add replaces python3-prompt_toolkit1.
https://github.com/void-linux/void-packages/pull/12637
Description: This package was switched from `python3-prompt_toolkit1` to conflicting package 
`python3-prompt_toolkit2`.
Adding `replaces="python-prompt_toolkit1>=0"` allows to update systems with this package installed again.

fixes #12636