From 676428dd5543974cf0bd5157263681d07efb6d13 Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Mon, 2 Dec 2013 11:30:17 +0100
Subject: [PATCH] haskell-graphviz: jailbreak to support recent versions of
 dlist

---
 pkgs/development/libraries/haskell/graphviz/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/haskell/graphviz/default.nix b/pkgs/development/libraries/haskell/graphviz/default.nix
index 6f7aea3289e..50e70c27dd2 100644
--- a/pkgs/development/libraries/haskell/graphviz/default.nix
+++ b/pkgs/development/libraries/haskell/graphviz/default.nix
@@ -15,7 +15,7 @@ cabal.mkDerivation (self: {
     transformers wlPprintText
   ];
   patchPhase = ''
-    sed -i -e 's|polyparse.*,|polyparse,|' graphviz.cabal
+    sed -i -e 's|polyparse.*,|polyparse,|' -e 's|dlist ==.*|dlist|' graphviz.cabal
   '';
   doCheck = false;
   meta = {