1 files changed, 12 insertions, 1 deletions
diff --git a/src/libstore/remote-store.cc b/src/libstore/remote-store.cc
index 2b5a932131c3..3764b4813a4e 100644
--- a/src/libstore/remote-store.cc
+++ b/src/libstore/remote-store.cc
@@ -3,6 +3,7 @@
 #include "remote-store.hh"
 #include "worker-protocol.hh"
 #include "archive.hh"
+#include "affinity.hh"
 #include "globals.hh"
 
 #include <sys/types.h>
@@ -15,7 +16,6 @@
 #include <unistd.h>
 #include <cstring>
 
-
 namespace nix {
 
 
@@ -71,8 +71,19 @@ void RemoteStore::openConnection(bool reserveSpace)
         if (GET_PROTOCOL_MAJOR(daemonVersion) != GET_PROTOCOL_MAJOR(PROTOCOL_VERSION))
             throw Error("Nix daemon protocol version not supported");
         writeInt(PROTOCOL_VERSION, to);
+
+        if (GET_PROTOCOL_MINOR(daemonVersion) >= 14) {
+            int cpu = lockToCurrentCPU();
+            if (cpu != -1) {
+                writeInt(1, to);
+                writeInt(cpu, to);
+            } else
+                writeInt(0, to);
+        }
+
         if (GET_PROTOCOL_MINOR(daemonVersion) >= 11)
             writeInt(reserveSpace, to);
+
         processStderr();
     }
     catch (Error & e) {