Don't apply the CPU affinity hack to nix-shell (and other Perl programs)

As discovered by Todd Veldhuizen, the shell started by nix-shell has
its affinity set to a single CPU.  This is because nix-shell connects
to the Nix daemon, which causes the affinity hack to be applied.  So
we turn this off for Perl programs.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/libstore/remote-store.cc b/src/libstore/remote-store.cc
index 3764b4813a4e..3017254baf3b 100644
--- a/src/libstore/remote-store.cc
+++ b/src/libstore/remote-store.cc
@@ -73,7 +73,7 @@ void RemoteStore::openConnection(bool reserveSpace)
         writeInt(PROTOCOL_VERSION, to);
 
         if (GET_PROTOCOL_MINOR(daemonVersion) >= 14) {
-            int cpu = lockToCurrentCPU();
+            int cpu = settings.lockCPU ? lockToCurrentCPU() : -1;
             if (cpu != -1) {
                 writeInt(1, to);
                 writeInt(cpu, to);