1 files changed, 4 insertions, 0 deletions
diff --git a/portato/db/eix_sql.py b/portato/db/eix_sql.py
index 3a0c6e9..c2d2292 100644
--- a/portato/db/eix_sql.py
+++ b/portato/db/eix_sql.py
@@ -49,6 +49,10 @@ class EixSQLDatabase (SQLDatabase):
 
         return old < mtime
 
+    def generate_cat_expr (self, cat):
+        # be a noop
+        return cat
+
     @SQLDatabase.con
     def populate (self, category = None, connection = None):
         inst = set(system.find_packages(pkgSet = system.SET_INSTALLED, key = category, with_version = False))