Mix flour in a bowl with 1 teaspoon salt. Add the eggs and about 200 ml water and beat everything with a perforated spoon to a smooth dough until the dough starts to bubble. The dough should be nice and thick, possibly add some more water.
Remove the rind from the cheese and grate roughly. Wash the chives, shake dry and cut into small rolls. Peel onions and cut or slice into thin rings. Heat the lard in a pan and slowly fry the onions in it until slowly brown. Finally, dust with paprika and fry briefly more.
Bring salted water to the boil in a large pot. Put the dough in portions into a spaetzle press. Press into the water. Cook for 2-3 minutes, remove with a skimmer, drain on a sieve. Pour about half of the cheese into a preheated bowl. Add the hot spaetzle with some cooking water. Sprinkle the rest of the cheese on top and mix everything carefully. Season with pepper, spread onions and chives on top. Serve immediately.