From a2ad0039f5ea08d31b15c15ddb7ca08be83bae8a Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Tue, 14 Oct 2014 15:51:30 +0200
Subject: [PATCH] haskell-dsp: jailbreak to fix build with recent 'random'

---
 pkgs/development/libraries/haskell/dsp/default.nix | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/haskell/dsp/default.nix b/pkgs/development/libraries/haskell/dsp/default.nix
index 071b66d0d9e..f0d64562d7c 100644
--- a/pkgs/development/libraries/haskell/dsp/default.nix
+++ b/pkgs/development/libraries/haskell/dsp/default.nix
@@ -9,7 +9,9 @@ cabal.mkDerivation (self: {
   isLibrary = true;
   isExecutable = true;
   buildDepends = [ random ];
-  jailbreak = true;
+  patchPhase = ''
+    sed -i -e 's|random.*<1.1,|random,|' dsp.cabal
+  '';
   meta = {
     homepage = "http://www.haskell.org/haskellwiki/DSP";
     description = "Haskell Digital Signal Processing";