Maybe fix

src/Nixfmt/Pretty.hs

@@ -169,8 +169,11 @@ prettyTerm (List (Ann pre paropen post) items parclose) =
 prettyTerm (Set krec paropen items parclose) = prettySet False (krec, paropen, items, parclose)
 
 -- Parentheses
-prettyTerm (Parenthesized paropen expr parclose)
-    = group $ pretty (moveTrailingCommentUp paropen) <> nest inner <> pretty parclose
+prettyTerm (Parenthesized paropen expr (Ann closePre parclose closePost))
+    = group $
+        pretty (moveTrailingCommentUp paropen)
+        <> nest (inner <> pretty closePre)
+        <> pretty (Ann [] parclose closePost)
   where
     inner =
       case expr of
@@ -345,15 +348,16 @@ prettyApp indentFunction pre hasPost f a
                 pretty open <> pretty fn <> hardspace
                 <> prettyTermWide body
                 <> pretty close
-        absorbLast (Term (Parenthesized (Ann pre' open post') expr close))
+        absorbLast (Term (Parenthesized (Ann pre' open post') expr (Ann pre'' close post'')))
             = group' Priority $ nest $ pretty (Ann pre' open Nothing)
                 -- Move any trailing comments on the opening parenthesis down into the body
-                <> (surroundWith line' $ group $ nest $
-                    mapFirstToken
+                <> (surroundWith line' $ group' RegularG $ nest $
+                    pretty (mapFirstToken
                         (\(Ann leading token trailing') -> (Ann (maybeToList (toLineComment <$> post') ++ leading) token trailing'))
-                        expr
+                        expr)
+                    <> pretty pre''
                 )
-                <> pretty close
+                <> pretty (Ann [] close post'')
         absorbLast arg = group' RegularG $ nest $ pretty arg
 
         -- Extract comment before the first function and move it out, to prevent functions being force-expanded

test/diff/apply/out.nix

@@ -345,6 +345,6 @@
   }
   (function (
     something
-  # ...
-    ) { })
+    # ...
+  ) { })
 ]