diff --git a/pkgs/os-specific/linux/kernel/build.nix b/pkgs/os-specific/linux/kernel/build.nix
index 90aa0c0b00c1..20d814a6936f 100644
--- a/pkgs/os-specific/linux/kernel/build.nix
+++ b/pkgs/os-specific/linux/kernel/build.nix
@@ -376,7 +376,10 @@ lib.makeOverridable (
       cp vmlinux $dev/
 
       mkdir -p $dev/lib/modules/${modDirVersion}/build/scripts
+      # Installing from source dir instead of $buildRoot so as to omit intermediate artifacts.
       cp -rL ../scripts/gdb/ $dev/lib/modules/${modDirVersion}/build/scripts
+      # Installing `constants.py` from `$buildRoot` as it's generated.
+      cp scripts/gdb/linux/constants.py $dev/lib/modules/${modDirVersion}/build/scripts/gdb/linux
 
       if [ -z "''${dontStrip-}" ]; then
         installFlags+=("INSTALL_MOD_STRIP=1")