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-rw-r--r--src/libstore/db.hh3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/libstore/db.hh b/src/libstore/db.hh
index 1c681b9b5419..bbeabfc7dfa4 100644
--- a/src/libstore/db.hh
+++ b/src/libstore/db.hh
@@ -76,7 +76,8 @@ public:
         const string & key, const string & data);
 
     void setStrings(const Transaction & txn, TableId table,
-        const string & key, const Strings & data);
+        const string & key, const Strings & data,
+        bool deleteEmpty = true);
 
     void delPair(const Transaction & txn, TableId table,
         const string & key);