From b2d870309d084266db1a1e58125d3085cc28b2ef Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Sat, 9 Aug 2014 00:55:29 +0200
Subject: [PATCH] haskell-mtl: don't build old versions of this package with a
 recent GHC

---
 pkgs/development/libraries/haskell/mtl/2.2.1.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/development/libraries/haskell/mtl/2.2.1.nix b/pkgs/development/libraries/haskell/mtl/2.2.1.nix
index 6589488edc0..8b8f77f2cdc 100644
--- a/pkgs/development/libraries/haskell/mtl/2.2.1.nix
+++ b/pkgs/development/libraries/haskell/mtl/2.2.1.nix
@@ -12,6 +12,7 @@ cabal.mkDerivation (self: {
     description = "Monad classes, using functional dependencies";
     license = self.stdenv.lib.licenses.bsd3;
     platforms = self.ghc.meta.platforms;
+    hydraPlatforms = self.stdenv.lib.platforms.none;
     maintainers = [ self.stdenv.lib.maintainers.andres ];
   };
 })