feat(hyprland): emit compositor config as lua

configs/nixos/modules/desktop/session/rofi.nix

@@ -6,6 +6,16 @@
 }:
 # rofi as the desktop launcher and dmenu-style menu frontend.
 let
+  execBind = key: command: {
+    _args = [
+      key
+      (luaCall "hl.dsp.exec_cmd" [ command ])
+    ];
+  };
+  luaCall =
+    function: args:
+    lib.generators.mkLuaInline "${function}(${lib.concatMapStringsSep ", " toLua args})";
+
   user = config.user.name;
 
   # A session menu built on the same themed rofi, so the power actions look
@@ -21,6 +31,8 @@ let
       'Shut down') ${pkgs.systemd}/bin/systemctl poweroff ;;
     esac
   '';
+
+  toLua = lib.generators.toLua { };
 in
 {
   options.modules.desktop.session.rofi.enable = lib.mkEnableOption "the rofi launcher";
@@ -41,10 +53,9 @@ in
       };
 
       # The launcher and the session menu, kept next to the tool they drive.
-      # $mod is defined by the compositor config these binds share.
       wayland.windowManager.hyprland.settings.bind = [
-        "$mod, R, exec, ${pkgs.rofi}/bin/rofi -show drun"
-        "$mod SHIFT, X, exec, ${powerMenu}"
+        (execBind "SUPER + R" "${pkgs.rofi}/bin/rofi -show drun")
+        (execBind "SUPER + SHIFT + X" "${powerMenu}")
       ];
     };
   };