From 4d7e4334d97826ae37ddd88d420ea2819664aa57 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andres=20L=C3=B6h?= <mail@andres-loeh.de>
Date: Thu, 7 Jun 2012 10:58:24 +0000
Subject: [PATCH] Patching ghc-events to work with latest mtl.

svn path=/nixpkgs/trunk/; revision=34377
---
 pkgs/development/libraries/haskell/ghc-events/default.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/development/libraries/haskell/ghc-events/default.nix b/pkgs/development/libraries/haskell/ghc-events/default.nix
index fa6ae059e845..4827b7494845 100644
--- a/pkgs/development/libraries/haskell/ghc-events/default.nix
+++ b/pkgs/development/libraries/haskell/ghc-events/default.nix
@@ -7,6 +7,9 @@ cabal.mkDerivation (self: {
   isLibrary = true;
   isExecutable = true;
   buildDepends = [ binary mtl ];
+  patchPhase = ''
+    sed -i -e 's|mtl *>=.*$|mtl,|' ghc-events.cabal
+  '';
   noHaddock = true;
   meta = {
     description = "Library and tool for parsing .eventlog files from GHC";