diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index ac22264a2748..b21cf2e2a9db 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -10583,7 +10583,9 @@ let
     };
 
     external = {
-      inherit (haskellngPackages) ghc-mod structured-haskell-mode Agda;
+      # FIXME: revert when Agda and ghc-mod are fixed on 7.10
+      inherit (haskell-ng.packages.ghc784) ghc-mod Agda;
+      inherit (haskellngPackages) structured-haskell-mode;
     };
   };