nvidia module: allow .persistenced == null

vcunat · vcunat · commit 7cbf7f54c179 · 2017-05-30T20:59:17.000+02:00
Fixes #26250. This is fallout from PR #22304. It's null for 304 and 173 legacy drivers. (cherry picked from commit bc7b895)
diff --git a/nixos/modules/hardware/video/nvidia.nix b/nixos/modules/hardware/video/nvidia.nix
@@ -56,7 +56,8 @@ in
     hardware.opengl.package = nvidiaPackage nvidia_x11 pkgs;
     hardware.opengl.package32 = nvidiaPackage nvidia_libs32 pkgs_i686;
 
-    environment.systemPackages = [ nvidia_x11.bin nvidia_x11.settings nvidia_x11.persistenced ];
+    environment.systemPackages = [ nvidia_x11.bin nvidia_x11.settings ]
+      ++ lib.filter (p: p != null) [ nvidia_x11.persistenced ];
 
     boot.extraModulePackages = [ nvidia_x11.bin ];
 
