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-rw-r--r--src/libstore/remote-store.cc6
-rw-r--r--src/libstore/worker-protocol.hh1
-rw-r--r--src/nix-worker/nix-worker.cc6
3 files changed, 10 insertions, 3 deletions
diff --git a/src/libstore/remote-store.cc b/src/libstore/remote-store.cc
index 07cb62dc80a4..b438c074fb51 100644
--- a/src/libstore/remote-store.cc
+++ b/src/libstore/remote-store.cc
@@ -296,7 +296,11 @@ Path RemoteStore::queryDeriver(const Path & path)
 
 PathSet RemoteStore::queryDerivationOutputs(const Path & path)
 {
-    throw Error("not yet implemented");
+    openConnection();
+    writeInt(wopQueryDerivationOutputs, to);
+    writeString(path, to);
+    processStderr();
+    return readStorePaths(from);
 }
 
 
diff --git a/src/libstore/worker-protocol.hh b/src/libstore/worker-protocol.hh
index e44c1e36b56f..9e36aab0f0b5 100644
--- a/src/libstore/worker-protocol.hh
+++ b/src/libstore/worker-protocol.hh
@@ -34,6 +34,7 @@ typedef enum {
     wopSetOptions = 19,
     wopCollectGarbage = 20,
     wopQuerySubstitutablePathInfo = 21,
+    wopQueryDerivationOutputs = 22,
 } WorkerOp;
 
 
diff --git a/src/nix-worker/nix-worker.cc b/src/nix-worker/nix-worker.cc
index 362b9b9287ed..59ab487761df 100644
--- a/src/nix-worker/nix-worker.cc
+++ b/src/nix-worker/nix-worker.cc
@@ -313,14 +313,16 @@ static void performOp(unsigned int clientVersion,
     }
 
     case wopQueryReferences:
-    case wopQueryReferrers: {
+    case wopQueryReferrers:
+    case wopQueryDerivationOutputs: {
         Path path = readStorePath(from);
         startWork();
         PathSet paths;
         if (op == wopQueryReferences)
             store->queryReferences(path, paths);
-        else
+        else if (op == wopQueryReferrers)
             store->queryReferrers(path, paths);
+        else paths = store->queryDerivationOutputs(path);
         stopWork();
         writeStringSet(paths, to);
         break;