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-rw-r--r--src/libstore/remote-store.cc5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/libstore/remote-store.cc b/src/libstore/remote-store.cc
index bcae21bf7650..2391fd9e87f1 100644
--- a/src/libstore/remote-store.cc
+++ b/src/libstore/remote-store.cc
@@ -98,7 +98,10 @@ bool RemoteStore::hasSubstitutes(const Path & path)
 
 Hash RemoteStore::queryPathHash(const Path & path)
 {
-    throw Error("not implemented 3");
+    writeInt(wopQueryPathHash, to);
+    writeString(path, to);
+    string hash = readString(from);
+    return parseHash(htSHA256, hash);
 }