Use `derive newtype instance` to save some boilerplate

src/Control/Monad/Unify/Trans.purs

@@ -32,24 +32,12 @@ newtype UnifyT k f m a = MkUnifyT (StateT (UnificationState k f) m a)
 
 derive instance Newtype (UnifyT k f m a) _
 derive instance Functor m => Functor (UnifyT k f m)
-
-instance Monad m => Apply (UnifyT k f m) where
-    apply m1 m2 = MkUnifyT $ apply (un MkUnifyT m1) (un MkUnifyT m2)
-
-instance Monad m => Applicative (UnifyT k f m) where
-    pure a = MkUnifyT $ pure a
-
-instance Monad m => Bind (UnifyT k f m) where
-    bind m f = MkUnifyT $ (un MkUnifyT m) >>= (un MkUnifyT <<< f)
-
+derive newtype instance Monad m => Apply (UnifyT k f m)
+derive newtype instance Monad m => Applicative (UnifyT k f m)
+derive newtype instance Monad m => Bind (UnifyT k f m)
 instance Monad m => Monad (UnifyT k f m)
-
-instance (Monad m, Alt m) => Alt (UnifyT k f m) where
-    alt = over2 MkUnifyT alt
-
-instance (Monad m, Plus m) => Plus (UnifyT k f m) where
-    empty = MkUnifyT empty
-
+derive newtype instance (Monad m, Alt m) => Alt (UnifyT k f m)
+derive newtype instance (Monad m, Plus m) => Plus (UnifyT k f m)
 instance (Monad m, Alternative m) => Alternative (UnifyT k f m)
 instance (MonadPlus m) => MonadPlus (UnifyT k f m)