* Single window mode does not work (the XWINDOWID hack does not work in Apples X11 server, so this may never get fixed).
* It is possible to use GTK to build native OS X menus: http://developer.gnome.org/gtk3/3.4/GtkApplication.html . It would be awesome to do this and hide the main GTK window if the top bar is available
* Zapper input is taken from GTK window instead of X11 window (a workaround could be implemented to resolve with with some #ifdef APPLE etc)
* Not an "official" target, but testing should be done before release on OS X
DOCS
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* Be sure to include details about new scons features for package maintainers so that the manpage, luascripts, and auxlib will be included in future packages