deepin.deepin-system-monitor: fix build with gcc 14 (#368741)

Author: wineee

pkgs/desktops/deepin/apps/deepin-system-monitor/default.nix

@@ -80,6 +80,8 @@ stdenv.mkDerivation rec {
 
   cmakeFlags = [ "-DVERSION=${version}" ];
 
+  env.NIX_CFLAGS_COMPILE = "-Wno-error=incompatible-pointer-types";
+
   strictDeps = true;
 
   meta = with lib; {