quit trying to fix this inconsistencies by now...

Author: mmatera

mathics/core/pattern.py

@@ -928,12 +928,15 @@ def expression_pattern_match_element_orderless(
             less_first=less_first,
             *set_lengths,
         )
-    return tuple(((tuple(q) for q in s) for s in sets))
+    return sets
 
 
+# TODO: adding the annotations for items
+# and items_rest as ``tuples`` produce failures in cython.
+# We should investigate what is the right type to pass here.
 def expression_pattern_match_element_process_items(
-    items: tuple,
-    items_rest: tuple,
+    items: Union[tuple, list],
+    items_rest: Union[tuple, list],
     parms: dict,
 ):
     # Include wrappings like Plus[a, b] only if not all items taken