From 2b6f0d08c6a79d054e1b58d8fd37f23a56471627 Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Fri, 27 Nov 2015 11:59:13 +0100
Subject: [PATCH] haskell-gtk2hs-buildtools: build this package with alex 3.1.4

The latest version, alex 3.1.5, generates code that this package can't
cope with.
---
 pkgs/development/haskell-modules/configuration-common.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index edafbe5eab6e..c975e444d10c 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -924,4 +924,7 @@ self: super: {
     librarySystemDepends = (drv.librarySystemDepends or []) ++ [ pkgs.ncurses ];
   });
 
+  # https://github.com/fpco/stackage/issues/1004
+  gtk2hs-buildtools = super.gtk2hs-buildtools.override { alex = self.alex_3_1_4; };
+
 }