Bring 3-4 l salted water (1 teaspoon salt per litre) to the boil. Wash the pumpkin, cut in half, remove seeds and dice with skin. Clean, wash, drain and chop the rocket salad a little smaller.
Cook the pasta in boiling salted water according to the instructions on the packet. Fry pumpkin in hot oil while turning for 5-7 minutes. Season to taste with salt and pepper. Coarsely chop cranberries and macadamia nuts. Stir both into the pesto.
Drain the pasta. Mix with pumpkin, arugula and pesto.