Don't add search to plugins if it's already there

site/publishconf.py

@@ -23,7 +23,8 @@ CATEGORY_FEED_RSS = 'feeds/{slug}.rss'
 SITEURL = 'https://blog.opentechstrategies.com'
 
 SEARCH_ENABLED = True
-PLUGINS.append('search')
+if not 'search' in PLUGINS:
+    PLUGINS.append('search')
 
 
 DELETE_OUTPUT_DIRECTORY = True