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

pyside-tools: remove package
https://github.com/void-linux/void-packages/pull/13423
Description: Resolves #12844 
pyside-tools was broken when python-pyside was removed here: https://github.com/void-linux/void-packages/pull/11064

It looks like we do not intend to support these bindings, so removing this package is the correct solution.