* Store the size of a store path in the database (to be precise, the

size of the NAR serialisation of the path, i.e., `nix-store --dump
  PATH').  This is useful for Hydra.

src/libstore/remote-store.cc

@@ -247,6 +247,12 @@ bool RemoteStore::querySubstitutablePathInfo(const Path & path,
 }
 
 
+ValidPathInfo RemoteStore::queryPathInfo(const Path & path)
+{
+    throw Error("not implemented");
+}
+
+
 Hash RemoteStore::queryPathHash(const Path & path)
 {
     openConnection();