Source
--- src/_macosx.m.orig 2018-08-09 23:01:31.000000000 -0400
+++ src/_macosx.m 2018-10-04 10:20:58.000000000 -0400
#include <Cocoa/Cocoa.h>
#include <ApplicationServices/ApplicationServices.h>
+#ifndef kCTForegroundColorFromContextAttributeName
+extern const CFStringRef kCTForegroundColorFromContextAttributeName AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
+#endif
#include <sys/socket.h>
#include <Python.h>