refactor(hyprland): simplify keybind registry schema

configs/nixos/registry/desktop-keybind.nix

@@ -1,54 +1,4 @@
 { lib, ... }:
-let
-  actionType = lib.types.addCheck (lib.types.attrsOf lib.types.anything) isAction;
-
-  isAction =
-    action:
-    builtins.hasAttr "type" action
-    && builtins.hasAttr action.type actionFields
-    && (
-      let
-        fields = builtins.getAttr action.type actionFields;
-        allowedFields = [ "type" ] ++ fields;
-      in
-      lib.all (field: builtins.hasAttr field action) fields
-      && lib.all (field: lib.elem field allowedFields) (builtins.attrNames action)
-      && lib.all (field: actionFieldChecks.${field} action.${field}) fields
-    );
-
-  actionFields = {
-    exec = [ "command" ];
-    focus = [ "direction" ];
-    "move-window" = [ "direction" ];
-    "resize-window" = [
-      "x"
-      "y"
-    ];
-    "toggle-floating" = [ ];
-    fullscreen = [ ];
-    layout = [ "message" ];
-    "close-window" = [ ];
-    "kill-window" = [ ];
-    "focus-workspace" = [ "workspace" ];
-    "move-to-workspace" = [ "workspace" ];
-  };
-
-  actionFieldChecks = {
-    command = builtins.isString;
-    direction =
-      direction:
-      lib.elem direction [
-        "left"
-        "down"
-        "up"
-        "right"
-      ];
-    x = builtins.isInt;
-    y = builtins.isInt;
-    workspace = builtins.isInt;
-    message = builtins.isString;
-  };
-in
 {
   checks = [
     {
@@ -69,7 +19,26 @@ in
       };
 
       action = lib.mkOption {
-        type = actionType;
+        type = lib.types.submodule {
+          freeformType = lib.types.attrsOf lib.types.anything;
+
+          options.type = lib.mkOption {
+            type = lib.types.enum [
+              "exec"
+              "focus"
+              "move-window"
+              "resize-window"
+              "toggle-floating"
+              "fullscreen"
+              "layout"
+              "close-window"
+              "kill-window"
+              "focus-workspace"
+              "move-to-workspace"
+            ];
+            description = "Selects the desktop action this keybind triggers.";
+          };
+        };
         description = "Declares the desktop action for this keybind.";
       };
     };