lumina: init package set for the lumina desktop

nixos/modules/services/x11/desktop-managers/lumina.nix

@@ -26,18 +26,13 @@ in
     services.xserver.desktopManager.session = singleton {
       name = "lumina";
       start = ''
-        exec ${pkgs.lumina}/bin/start-lumina-desktop
+        exec ${pkgs.lumina.lumina}/bin/start-lumina-desktop
       '';
     };
 
-    environment.systemPackages = [
-      pkgs.fluxbox
-      pkgs.libsForQt5.kwindowsystem
-      pkgs.lumina
-      pkgs.numlockx
-      pkgs.qt5.qtsvg
-      pkgs.xscreensaver
-    ];
+    environment.systemPackages =
+      pkgs.lumina.preRequisitePackages ++
+      pkgs.lumina.corePackages;
 
     # Link some extra directories in /run/current-system/software/share
     environment.pathsToLink = [

pkgs/desktops/lumina/default.nix

@@ -0,0 +1,22 @@
+{ pkgs, libsForQt5 }:
+
+let
+  packages = self: with self; {
+
+    lumina = callPackage ./lumina { };
+
+    preRequisitePackages = [
+      pkgs.fluxbox
+      pkgs.libsForQt5.kwindowsystem
+      pkgs.numlockx
+      pkgs.qt5.qtsvg
+      pkgs.xscreensaver
+    ];
+
+    corePackages = [
+      lumina
+    ];
+
+  };
+
+in pkgs.lib.makeScope libsForQt5.newScope packages

pkgs/top-level/all-packages.nix

@@ -22038,7 +22038,7 @@ in
 
   kakasi = callPackage ../tools/text/kakasi { };
 
-  lumina = libsForQt5.callPackage ../desktops/lumina/lumina { };
+  lumina = recurseIntoAttrs (callPackage ../desktops/lumina { });
 
   lxqt = recurseIntoAttrs (import ../desktops/lxqt {
     inherit pkgs libsForQt5;