From 06068c779803d46e625fb61c217b5a50b8f63643 Mon Sep 17 00:00:00 2001
From: Raymond Gauthier <jraygauthier@gmail.com>
Date: Tue, 27 Jan 2015 22:34:51 -0500
Subject: [PATCH] haskell-defaults.nix: "xhtml" is a core library in GHC 7.8.x

Fixes https://github.com/NixOS/nixpkgs/issues/6012.
---
 pkgs/top-level/haskell-defaults.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/top-level/haskell-defaults.nix b/pkgs/top-level/haskell-defaults.nix
index 509c3d5acdf4..204603ddee61 100644
--- a/pkgs/top-level/haskell-defaults.nix
+++ b/pkgs/top-level/haskell-defaults.nix
@@ -34,6 +34,7 @@
     jailbreakCabal = super.jailbreakCabal.override { Cabal = self.Cabal_1_20_0_3; };
     MonadRandom = self.MonadRandom_0_2_0_1; # newer versions require transformers >= 0.4.x
     mtl = self.mtl_2_1_3_1;
+    xhtml = null;
     transformersCompat = super.transformersCompat.override { cabal = self.cabal.override {
       extension = self: super: { configureFlags = "-fthree " + super.configureFlags or ""; };
     }; };