* `nix-store -q --hash' to quickly query the hash of the contents of a

  store path (which is stored in the database).

1 files changed, 8 insertions, 0 deletions

diff --git a/src/libstore/store.cc b/src/libstore/store.cc
index 946be5e02b..9f50e597eb 100644
--- a/src/libstore/store.cc
+++ b/src/libstore/store.cc
@@ -509,6 +509,14 @@ static Hash queryHash(const Transaction & txn, const Path & storePath)
 }
 
 
+Hash queryPathHash(const Path & path)
+{
+    if (!isValidPath(path))
+        throw Error(format("path `%1%' is not valid") % path);
+    return queryHash(noTxn, path);
+}
+
+
 void registerValidPath(const Transaction & txn,
     const Path & _path, const Hash & hash, const PathSet & references,
     const Path & deriver)