Singletons/T54.hs:(0,0)-(0,0): Splicing declarations
    singletons
      [d| g :: Bool -> Bool
          g e = (case [not] of [_] -> not) e |]
  ======>
    g :: Bool -> Bool
    g e = (case [not] of [_] -> not) e
    data Let0123456789876543210Scrutinee_0123456789876543210Sym0 e0123456789876543210
      where
        Let0123456789876543210Scrutinee_0123456789876543210Sym0KindInference :: SameKind (Apply Let0123456789876543210Scrutinee_0123456789876543210Sym0 arg) (Let0123456789876543210Scrutinee_0123456789876543210Sym1 arg) =>
                                                                                Let0123456789876543210Scrutinee_0123456789876543210Sym0 e0123456789876543210
    type instance Apply Let0123456789876543210Scrutinee_0123456789876543210Sym0 e0123456789876543210 = Let0123456789876543210Scrutinee_0123456789876543210 e0123456789876543210
    instance SuppressUnusedWarnings Let0123456789876543210Scrutinee_0123456789876543210Sym0 where
      suppressUnusedWarnings
        = snd
            ((,)
               Let0123456789876543210Scrutinee_0123456789876543210Sym0KindInference
               ())
    type family Let0123456789876543210Scrutinee_0123456789876543210Sym1 e0123456789876543210 where
      Let0123456789876543210Scrutinee_0123456789876543210Sym1 e0123456789876543210 = Let0123456789876543210Scrutinee_0123456789876543210 e0123456789876543210
    type family Let0123456789876543210Scrutinee_0123456789876543210 e where
      Let0123456789876543210Scrutinee_0123456789876543210 e = Apply (Apply (:@#@$) NotSym0) NilSym0
    type family Case_0123456789876543210 e t where
      Case_0123456789876543210 e '[_] = NotSym0
    type GSym0 :: (~>) Bool Bool
    data GSym0 :: (~>) Bool Bool
      where
        GSym0KindInference :: SameKind (Apply GSym0 arg) (GSym1 arg) =>
                              GSym0 a0123456789876543210
    type instance Apply GSym0 a0123456789876543210 = G a0123456789876543210
    instance SuppressUnusedWarnings GSym0 where
      suppressUnusedWarnings = snd ((,) GSym0KindInference ())
    type GSym1 :: Bool -> Bool
    type family GSym1 (a0123456789876543210 :: Bool) :: Bool where
      GSym1 a0123456789876543210 = G a0123456789876543210
    type G :: Bool -> Bool
    type family G (a :: Bool) :: Bool where
      G e = Apply (Case_0123456789876543210 e (Let0123456789876543210Scrutinee_0123456789876543210Sym1 e)) e
    sG ::
      (forall (t :: Bool).
       Sing t -> Sing (Apply GSym0 t :: Bool) :: Type)
    sG (sE :: Sing e)
      = applySing
          (let
             sScrutinee_0123456789876543210 ::
               Sing @_ (Let0123456789876543210Scrutinee_0123456789876543210Sym1 e)
             sScrutinee_0123456789876543210
               = applySing
                   (applySing (singFun2 @(:@#@$) SCons) (singFun1 @NotSym0 sNot)) SNil
           in
             id
               @(Sing (Case_0123456789876543210 e (Let0123456789876543210Scrutinee_0123456789876543210Sym1 e)))
               (case sScrutinee_0123456789876543210 of
                  SCons _ SNil -> singFun1 @NotSym0 sNot))
          sE
    instance SingI (GSym0 :: (~>) Bool Bool) where
      sing = singFun1 @GSym0 sG