root-instances = [ { module = "Spec.ConfigInstanceModules.Module1", instance = "Bounded T" }
                 , "Read T" 
                 , { module = "Spec.ConfigInstanceModules.Module3" }
                 , { class = '\.Enum$' }
                 , { module = "Spec.ConfigInstanceModules.Module2", class = '\.Show$' } 
                 ]