TYPE CONSTRUCTORS
  data type MyKind{0} :: *
  data family Sing{2} :: forall k. k -> *
    roles nominal nominal
COERCION AXIOMS
  axiom NamedWildcardInDataFamilyInstanceLHS.D:R:SingMyKind_a0 ::
      Sing = NamedWildcardInDataFamilyInstanceLHS.R:SingMyKind_a
DATA CONSTRUCTORS
  A :: MyKind
  B :: MyKind
  SingA :: Sing 'A
  SingB :: Sing 'B
FAMILY INSTANCES
  data instance Sing _a
                  -- Defined at NamedWildcardInDataFamilyInstanceLHS.hs:8:15
Dependent modules: []
Dependent packages: [base-4.12.0.0, ghc-prim-0.5.3,
                     integer-gmp-1.0.2.0]