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

transmission: build with cmake
https://github.com/void-linux/void-packages/pull/22351

Description:
- Updated template to use `build_style=cmake` instead of `gnu-configure`
- Fixed broken Qt translations  from previous revision

Right now the official tarball from [transmission/transmission-releases](https://github.com/transmission/transmission-releases) is broken as mentioned in [this issue](https://github.com/transmission/transmission/issues/1248). User @floppym has rolled their own tarball with [this fix](https://github.com/transmission/transmission/pull/1247) applied. I have used that tarball for now but hopefully we can revert to official tarballs for future versions.

Thanks a lot @floppym