diff --git a/pkgs/development/haskell-modules/configuration-ghc-8.0.x.nix b/pkgs/development/haskell-modules/configuration-ghc-8.0.x.nix index 60e2cea936f..f0b793d949d 100644 --- a/pkgs/development/haskell-modules/configuration-ghc-8.0.x.nix +++ b/pkgs/development/haskell-modules/configuration-ghc-8.0.x.nix @@ -65,4 +65,7 @@ self: super: { # https://github.com/ekmett/semigroupoids/issues/42 semigroupoids = dontCheck super.semigroupoids; + # Version 4.x doesn't compile with transformers 0.5 or later. + kan-extensions = self.kan-extensions_5_0_1; + }