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-rw-r--r--src/nix-store/xmlgraph.hh4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/nix-store/xmlgraph.hh b/src/nix-store/xmlgraph.hh
index c2216c5a4627..a6e7d4e2805a 100644
--- a/src/nix-store/xmlgraph.hh
+++ b/src/nix-store/xmlgraph.hh
@@ -4,6 +4,8 @@
 
 namespace nix {
 
-void printXmlGraph(const PathSet & roots);
+class Store;
+
+void printXmlGraph(ref<Store> store, const PathSet & roots);
 
 }