In a large pot, put the carrot, navy beans, sweet snap peas and green beans. Add the salt. Fill with water to the top. Bring it to a simmer and leave for an hour.
Meanwhile, peel the garlic, wash the basil leaves and place it in the food processor along with the tomatoes and the olive oil. Set aside, you have your pistou.
Add the potatoes. Cook for 15 minutes. Then, add the pastas and cooked as required on the package.
Now, add your pistou and stir. Your soup is ready, you can add some shredded emmental on top after serving.