There is an updated pull request by zlice against master on the void-packages repository

https://github.com/zlice/void-packages kvantum-qt6
https://github.com/void-linux/void-packages/pull/46851

kvantum: update to 1.0.10.
#### Testing the changes
- I tested the changes in this PR: **YES**

#### Local build testing
- I built this PR locally for my native architecture, **x86_64**

#### Comments

Allows kvantum to handle qt5 and qt6 themes under qt5ct and qt6ct.
Their install guide says to 'disable' qt5 but it works fine for both.

Switches build to cmake over qmake

https://github.com/tsujan/Kvantum/blob/master/Kvantum/INSTALL.md#with-cmake

A patch file from https://github.com/void-linux/void-packages/pull/46851.patch is attached