Allow multiple desktops to be enabled

common/desktop/hyprland.nix

@@ -1,7 +1,7 @@
 { config, pkgs, ... }:
 
 {
-  desktop = "hyprland";
+  desktop = [ "hyprland" ];
 
   programs.hyprland.enable = true;
 

common/desktop/sway.nix

@@ -1,7 +1,7 @@
 { config, pkgs, ... }:
 
 {
-  desktop = "sway";
+  desktop = [ "sway" ];
 
   programs.sway = {
     enable = true;

common/options.nix

@@ -8,8 +8,8 @@ with lib; {
     };
 
     desktop = mkOption {
-      default = "";
-      type = types.str;
+      default = [];
+      type = types.listOf types.str;
     };
   };
 }

common/users/cameron/default.nix

@@ -27,7 +27,7 @@ in {
         packages = (with pkgs; [
           direnv
           nix-direnv
-        ] ++ (lib.optionals (config.desktop != "") [
+        ] ++ (lib.optionals ((builtins.length config.desktop) != 0) [
           bibata-cursors
           bibata-cursors-translucent
         ]));