flake update & regenerate all packages

nix/default.nix

@@ -0,0 +1,18 @@
+{
+  nix-ros-overlay ? builtins.fetchTarball "https://github.com/lopsided98/nix-ros-overlay/archive/master.tar.gz",
+}:
+let
+  applyDistroOverlay =
+    rosOverlay: rosPackages:
+    rosPackages
+    // builtins.mapAttrs (
+      rosDistro: rosPkgs: if rosPkgs ? overrideScope then rosPkgs.overrideScope rosOverlay else rosPkgs
+    ) rosPackages;
+  rosDistroOverlays = final: prev: {
+    # Apply the overlay to multiple ROS distributions
+    rosPackages = applyDistroOverlay (import ./overlay.nix) prev.rosPackages;
+  };
+in
+import nix-ros-overlay {
+  overlays = [ rosDistroOverlays ];
+}