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authorPeter Simons <simons@cryp.to>2014-06-10 01:21:48 +0200
committerPeter Simons <simons@cryp.to>2014-06-10 20:27:20 +0200
commitac56e50d3aa5c7a57a9eca27beca8b523b2db262 (patch)
tree40228642fbb8ff21bc7843a236caca5bc3ecf482 /pkgs
parentabff388c20993399edcc6abcc0f92239c33a8154 (diff)
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haskell-defaults.nix: ghc-HEAD requires latest mtl
Diffstat (limited to 'pkgs')
-rw-r--r--pkgs/top-level/haskell-defaults.nix3
1 files changed, 2 insertions, 1 deletions
diff --git a/pkgs/top-level/haskell-defaults.nix b/pkgs/top-level/haskell-defaults.nix
index d002503d0c73..beeee5663dc0 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 // {