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-rw-r--r--nix/nix-daemon/guix-daemon.cc3
1 files changed, 3 insertions, 0 deletions
diff --git a/nix/nix-daemon/guix-daemon.cc b/nix/nix-daemon/guix-daemon.cc
index d1d4541971..3cca120755 100644
--- a/nix/nix-daemon/guix-daemon.cc
+++ b/nix/nix-daemon/guix-daemon.cc
@@ -264,6 +264,9 @@ main (int argc, char *argv[])
   /* Turn automatic deduplication on by default.  */
   settings.autoOptimiseStore = true;
 
+  /* Default to using as many cores as possible.  */
+  settings.buildCores = 0;
+
   argvSaved = argv;
 
   try