dhall-1.26.0: dhall-lang/tests/normalization/success/unit/OperatorListConcatenateNormalizeArgumentsA.dhall
λ(T : Type) → λ(x : List T) → λ(y : List T) → ([] : List T) # x # (([] : List T) # y)
λ(T : Type) → λ(x : List T) → λ(y : List T) → ([] : List T) # x # (([] : List T) # y)