refactor(hyprland): move terminal keybind into registry

configs/nixos/modules/desktop/apps/ghostty.nix

@@ -12,6 +12,14 @@ in
   options.modules.desktop.apps.ghostty.enable = lib.mkEnableOption "Ghostty as the desktop terminal";
 
   config = lib.mkIf config.modules.desktop.apps.ghostty.enable {
+    registry.keybind.${config.networking.hostName}.ghostty = {
+      keys = "SUPER + Return";
+      action = {
+        kind = "exec";
+        command = "${pkgs.ghostty}/bin/ghostty";
+      };
+    };
+
     home-manager.users.${user}.home.packages = [ pkgs.ghostty ];
   };
 }

configs/nixos/modules/desktop/session/hyprland/default.nix

@@ -8,6 +8,7 @@
   options.modules.desktop.session.hyprland.enable = lib.mkEnableOption "the Hyprland compositor";
 
   config = lib.mkIf config.modules.desktop.session.hyprland.enable {
+
     # This program integration owns the session, portals, and polkit, launched
     # through the universal Wayland session manager.
     programs.hyprland = {
@@ -34,14 +35,12 @@
       settings = {
         config.general.layout = "dwindle";
 
-        bind = [
-          {
-            _args = [
-              "SUPER + Return"
-              (lib.generators.mkLuaInline ''hl.dsp.exec_cmd("ghostty")'')
-            ];
-          }
-        ];
+        bind = lib.mapAttrsToList (_name: keybind: {
+          _args = [
+            keybind.keys
+            (lib.generators.mkLuaInline "hl.dsp.exec_cmd(${lib.generators.toLua { } keybind.action.command})")
+          ];
+        }) (lib.attrByPath [ config.networking.hostName ] { } config.registry.keybind);
       };
     };
   };