From bb383741583bbaff7180ed77530a62968d1eaddb Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Tue, 31 Mar 2015 14:10:01 +0200
Subject: [PATCH] haskell-xmonad-contrib: fix build

---
 pkgs/development/haskell-modules/configuration-common.nix | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index d3363703f7a..685dbc5f0e8 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -658,6 +658,14 @@ self: super: {
   # https://github.com/haskell/haddock/issues/378
   haddock-library = dontCheck super.haddock-library;
 
+  # Already fixed in upstream darcs repo.
+  xmonad-contrib = overrideCabal super.xmonad-contrib (drv: {
+    patchPhase = ''
+      sed -i -e '24iimport Control.Applicative' XMonad/Util/Invisible.hs
+      sed -i -e '22iimport Control.Applicative' XMonad/Hooks/DebugEvents.hs
+    '';
+  });
+
 } // {
 
   # Not on Hackage.