diff --git a/pkgs/development/haskell-modules/configuration-ghc-7.4.x.nix b/pkgs/development/haskell-modules/configuration-ghc-7.4.x.nix index 32a12c29e0f..a0eb2724074 100644 --- a/pkgs/development/haskell-modules/configuration-ghc-7.4.x.nix +++ b/pkgs/development/haskell-modules/configuration-ghc-7.4.x.nix @@ -64,4 +64,7 @@ self: super: { # Choose appropriate flags for our version of 'bytestring'. bytestring-builder = disableCabalFlag super.bytestring-builder "bytestring_has_builder"; + # Newer versions require a more recent compiler. + control-monad-free = super.control-monad-free_0_5_3; + } diff --git a/pkgs/development/haskell-modules/configuration-ghc-7.6.x.nix b/pkgs/development/haskell-modules/configuration-ghc-7.6.x.nix index 52a6fd44689..d23bc99810a 100644 --- a/pkgs/development/haskell-modules/configuration-ghc-7.6.x.nix +++ b/pkgs/development/haskell-modules/configuration-ghc-7.6.x.nix @@ -71,4 +71,7 @@ self: super: { # The compat library is empty in the presence of mtl 2.2.x. mtl-compat = dontHaddock super.mtl-compat; + # Newer versions require a more recent compiler. + control-monad-free = super.control-monad-free_0_5_3; + }