nixpkgs/pkgs/development/python-modules/matplotlib/darwin-stdenv.patch

--- a/src/_macosx.m	2015-10-30 00:46:20.000000000 +0200
+++ b/src/_macosx.m	2015-11-01 14:52:25.000000000 +0200
@@ -6264,6 +6264,7 @@
 
 static bool verify_framework(void)
 {
+    return true;  /* nixpkgs darwin stdenv */
 #ifdef COMPILING_FOR_10_6
     NSRunningApplication* app = [NSRunningApplication currentApplication];
     NSApplicationActivationPolicy activationPolicy = [app activationPolicy];