tk +quartz -x11 dependency on libX11. Why?

[Joshua Root]

On 2016-5-14 00:10 , Vincent Habchi wrote:
> Hi there,
>
> why does tk +quartz -x11 depend on libX11? I commented out that line in the Portfile and it compiled fine.
> Leaving that (dangling) dependency alive means installing a lot of cruft.

As the comment in the quartz variant in the portfile says:
# tk.h still includes and uses types from X11/Xlib.h

- Josh