diff --git a/pkgs/top-level/haskell-defaults.nix b/pkgs/top-level/haskell-defaults.nix index d002503d0c7..beeee5663dc 100644 --- a/pkgs/top-level/haskell-defaults.nix +++ b/pkgs/top-level/haskell-defaults.nix @@ -15,14 +15,15 @@ # Older compilers inherit the overrides from newer ones. ghcHEADPrefs = self : super : super // { - mtl = self.mtl_2_1_2; cabalInstall_1_20_0_2 = super.cabalInstall_1_20_0_2.override { Cabal = null; }; + mtl = self.mtl_2_2_1; transformersCompat = super.transformersCompat_0_3_3; }; ghc782Prefs = self : super : ghcHEADPrefs self super // { cabalInstall_1_20_0_2 = super.cabalInstall_1_20_0_2.override { Cabal = self.Cabal_1_20_0_1; }; codex = super.codex.override { hackageDb = super.hackageDb.override { Cabal = self.Cabal_1_20_0_1; }; }; + mtl = self.mtl_2_1_2; }; ghc763Prefs = self : super : ghc782Prefs self super // {