feat(handy): package Handy for Nix

system/boot/boot.nix

@@ -60,10 +60,9 @@ in {
       then "amdgpu"
       else "i915"
     );
-    extraModprobeConfig =
-      strings.concatLines
-      ([cfg.kernel.extraModprobeConfig]
-        ++ lists.optional cfg.kernel.v4l2loopback.enable ''options v4l2loopback exclusive_caps=1 devices=1 video_nr=0 card_label="OBS Studio"'');
+    extraModulePackages =
+      strings.concatLines (strings.optionalString cfg.kernel.v4l2loopback.enable "options v4l2loopback exclusive_caps=1 devices=1 video_nr=0 card_label=" "OBS Studio" "")
+      cfg.kernel.extraModprobeConfig;
     loader = {
       systemd-boot.enable = cfg.systemd-boot;
       efi.canTouchEfiVariables = cfg.systemd-boot;