prop_break f xs = runner1 (enumPure1Chunk xs (Iter.break f)) == fst (break f xs)
  where types = xs :: [Int]
prop_break f xs = runner1 (enumPure1Chunk xs (Iter.break f)) == fst (break f xs)
  where types = xs :: [Int]
prop_break f xs = runner1 (enumPure1Chunk xs (Iter.break f)) == fst (break f xs)
  where types = xs :: [Int]