Add hyprland to waybar-hyprland path as fallback for hyprctl

nix/overlays.nix

@@ -56,6 +56,10 @@ in {
           # use hyprctl to switch workspaces
           sed -i 's/zext_workspace_handle_v1_activate(workspace_handle_);/const std::string command = "hyprctl dispatch workspace " + name_;\n\tsystem(command.c_str());/g' src/modules/wlr/workspace_manager.cpp
         '';
+        postFixup = ''
+          wrapProgram $out/bin/waybar \
+            --suffix PATH : ${lib.makeBinPath [ prev.hyprland ]}
+        '';
         mesonFlags = old.mesonFlags ++ ["-Dexperimental=true"];
       });
     })