Simplify type of Monad.appR2

1 files changed, 2 insertions, 4 deletions

diff --git a/lib/ur/monad.ur b/lib/ur/monad.ur
index 4fc1de87..487aef26 100644
--- a/lib/ur/monad.ur
+++ b/lib/ur/monad.ur
@@ -94,13 +94,11 @@ fun foldMapR [K] [m] (_ : monad m) [tf :: K -> Type] [tf' :: K -> Type] [tr :: {
      fl
 
 fun appR2 [K] [m] (_ : monad m) [tf1 :: K -> Type] [tf2 :: K -> Type]
-           (f : nm :: Name -> t :: K -> rest :: {K}
-                -> [[nm] ~ rest] =>
-            tf1 t -> tf2 t -> m unit)
+           (f : nm :: Name -> t :: K -> tf1 t -> tf2 t -> m unit)
            [r ::: {K}] (fl : folder r) =
     @Top.fold [fn r :: {K} => $(map tf1 r) -> $(map tf2 r) -> m unit]
      (fn [nm :: Name] [t :: K] [rest :: {K}] [[nm] ~ rest] acc r1 r2 =>
          acc (r1 -- nm) (r2 -- nm);
-         f [nm] [t] [rest] ! r1.nm r2.nm)
+         f [nm] [t] r1.nm r2.nm)
      (fn _ _ => return ())
      fl