$NetBSD: patch-aa,v 1.4 2016/11/08 11:42:01 wiz Exp $

--- sx/w3c/css.py.orig	2009-03-18 13:02:36.000000000 +0000
+++ sx/w3c/css.py
@@ -37,7 +37,10 @@ Dependencies:
 #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 import copy
-import sets
+try:
+    set
+except NameError:
+    from sets import Set as set
 import cssParser
 import cssSpecial
 
@@ -526,7 +529,7 @@ class CSSInlineRuleset(CSSRuleset, CSSDe
 class CSSBuilder(cssParser.CSSBuilderAbstract):
     RulesetFactory = CSSRuleset
     SelectorFactory = CSSMutableSelector
-    MediumSetFactory = sets.Set
+    MediumSetFactory = set
     DeclarationsFactory = CSSDeclarations
     TermFunctionFactory = CSSTerminalFunction
     TermOperatorFactory = CSSTerminalOperator