@Chocimier you mean `restricted=yes` ? Because `nonfree` is for packages that are nonfree but still allow redistribution. That should also work, but would probably require that someone removes the package manually from the binary repo (?). (idk how the cleaning script works).
The PR sets font-symbola to restricted now.
If for any reason the nonfree method with INSTALL and REMOVE is preferred, it still is in my repo https://github.com/Johnnynator/void-packages/tree/font-symbola-nonfree