purescript-0.12.1: tests/purs/failing/3405.purs
-- @shouldFailWith CannotFindDerivingType module Main where import Prelude type Something = Int derive instance eqSomething ∷ Eq Something
-- @shouldFailWith CannotFindDerivingType module Main where import Prelude type Something = Int derive instance eqSomething ∷ Eq Something