New comment by zdykstra on void-packages repository

https://github.com/void-linux/void-packages/pull/24806#issuecomment-690364295

Comment:
> I think you have to `make copy-data` in `post_install`: https://git.sr.ht/~julienxx/castor/tree/master/Makefile#L36

https://github.com/void-linux/void-packages/blob/master/srcpkgs/castor/template#L15-L18 :)