Looking further, this seems the easiest way short of modifying compiler types. Another alternative might be to add a boolean field to `TIdent` that indicates whether the identifier is exported. That would remove the need for the `nkPostfix` arrangement, as well as make the `isVisible` procedure in `renderer.nim` unnecessary. But I figure you probably want that `nkPostfix` arrangement for reasons related to the macro system.
Eager to know if there's a more elegant solution!
