From 04a590b89aafd5d7d415bc6b89808474531280c9 Mon Sep 17 00:00:00 2001
From: OPNA2608 <christoph.neidahl@gmail.com>
Date: Tue, 8 Nov 2022 21:14:28 +0100
Subject: [PATCH] np2kai: Fix build

---
 pkgs/applications/emulators/np2kai/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/applications/emulators/np2kai/default.nix b/pkgs/applications/emulators/np2kai/default.nix
index cf55085b78a1..4e2f01ade369 100644
--- a/pkgs/applications/emulators/np2kai/default.nix
+++ b/pkgs/applications/emulators/np2kai/default.nix
@@ -124,7 +124,7 @@ stdenv.mkDerivation rec {
 
   configurePhase = ''
     export GIT_VERSION=${builtins.substring 0 7 src.rev}
-    buildFlags="$buildFlags ''${enableParallelBuilding:+-j$NIX_BUILD_CORES"
+    buildFlags="$buildFlags ''${enableParallelBuilding:+-j$NIX_BUILD_CORES}"
   '' + optionalString enableX11 ''
     cd x11
     substituteInPlace Makefile.am \