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-rw-r--r--src/nix-store/dotgraph.hh4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/nix-store/dotgraph.hh b/src/nix-store/dotgraph.hh
index 68410d84156d..d3b37642c820 100644
--- a/src/nix-store/dotgraph.hh
+++ b/src/nix-store/dotgraph.hh
@@ -4,6 +4,8 @@
 
 namespace nix {
 
-void printDotGraph(const PathSet & roots);
+class StoreAPI;
+
+void printDotGraph(StoreAPI & store, const PathSet & roots);
 
 }