nixpkgs/pkgs/development/libraries/flann/no-examples.patch

--- a/CMakeLists.txt	
+++ b/CMakeLists.txt	
@@ -155,7 +155,7 @@

 add_subdirectory( cmake )
 add_subdirectory( src )
-add_subdirectory( examples )
+#add_subdirectory( examples )
 add_subdirectory( test )
 add_subdirectory( doc )