Index: pyyaml/trunk/tests/test_appliance.py
===================================================================
--- pyyaml/trunk/tests/test_appliance.py	(revision 150)
+++ pyyaml/trunk/tests/test_appliance.py	(revision 312)
@@ -10,4 +10,5 @@
 
     DATA = 'tests/data'
+    SKIP_EXT = '.skip'
 
     all_tests = {}
@@ -20,4 +21,6 @@
         for test in cls.all_tests:
             available_extensions = cls.all_tests[test]
+            if cls.SKIP_EXT in available_extensions:
+                continue
             for ext in extensions:
                 if ext not in available_extensions: