Documentation

Helper to use Show-based prettyprinting with DerivingVia.

>>> :{
data TestWithDeriving a b = TestWithDeriving
  { testSet         :: Maybe (Set a)
  , testB           :: b
  , testIntMap      :: IntMap String
  , testComplexMap  :: Map (Maybe (Set Int)) (IntMap (Set String))
  }
  deriving (Show)
  deriving Pretty via PPShow (TestWithDeriving a b)
:}