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

New package: gtg-0.4
https://github.com/void-linux/void-packages/pull/27883

Description:
Homepage: https://github.com/getting-things-gnome/gtg
Documentation: https://wiki.gnome.org/Apps/GTG

I tried to write the template file but maybe it is still missing some dependencies for the correct functioning of plugins.
If someone can figure this out it would be great.

Also, this need #27505 to be merged, since it's a dependency.