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-rw-r--r--pkgs/os-specific/linux/kernel/manual-config.nix4
1 files changed, 4 insertions, 0 deletions
diff --git a/pkgs/os-specific/linux/kernel/manual-config.nix b/pkgs/os-specific/linux/kernel/manual-config.nix
index d206910732c..0538511c528 100644
--- a/pkgs/os-specific/linux/kernel/manual-config.nix
+++ b/pkgs/os-specific/linux/kernel/manual-config.nix
@@ -164,6 +164,10 @@ let
       ] ++ (optional isModular "INSTALL_MOD_PATH=$(out)")
       ++ optional installsFirmware "INSTALL_FW_PATH=$(out)/lib/firmware";
 
+      preInstall = ''
+        installFlagsArray+=("-j$NIX_BUILD_CORES")
+      '';
+
       # Some image types need special install targets (e.g. uImage is installed with make uinstall)
       installTargets = [ (
         if platform ? kernelInstallTarget then platform.kernelInstallTarget