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

https://github.com/mobinmob/void-packages mtpaint
https://github.com/void-linux/void-packages/pull/26004

mtpaint: update to 3.49.33,
- add release optimisations
- add internationalisation
- add mtp symlink to mtpaint (simple file viewer, mtpaint -v).

A patch file from https://github.com/void-linux/void-packages/pull/26004.patch is attached