From 7462c7d2f75fc5a653bae86f0d5c7322136a6383 Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Fri, 21 Apr 2017 16:13:42 +0200
Subject: [PATCH] haskell-utf8-string: fix build with GHC HEAD

---
 pkgs/development/haskell-modules/configuration-ghc-head.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/haskell-modules/configuration-ghc-head.nix b/pkgs/development/haskell-modules/configuration-ghc-head.nix
index f093c0e427e8..2707fb69fa95 100644
--- a/pkgs/development/haskell-modules/configuration-ghc-head.nix
+++ b/pkgs/development/haskell-modules/configuration-ghc-head.nix
@@ -53,7 +53,7 @@ self: super: {
     postPatch = "sed -i -e 's|base < 4.8|base|' hspec-expectations.cabal";
   });
   utf8-string = overrideCabal super.utf8-string (drv: {
-    postPatch = "sed -i -e 's|base >= 3 && < 4.8|base|' utf8-string.cabal";
+    postPatch = "sed -i -e 's|base >= 4.3 && < 4.10|base|' utf8-string.cabal";
   });
 
   # bos/attoparsec#92