diff --git a/pkgs/top-level/haskell-defaults.nix b/pkgs/top-level/haskell-defaults.nix index 38d4774ce13..a81f8cae90a 100644 --- a/pkgs/top-level/haskell-defaults.nix +++ b/pkgs/top-level/haskell-defaults.nix @@ -209,8 +209,8 @@ ghcBinary = pkgs.haskellPackages.ghcPlain; prefFun = ghcHEADPrefs; extraArgs = { - happy = pkgs.haskellPackages.happy_1_19_2; - alex = pkgs.haskellPackages.alex_3_1_3; + happy = pkgs.haskellPackages.happy; + alex = pkgs.haskellPackages.alex; }; };