From 647cda9dfe1526b3fc9fb6b6d43723fe2cc396de Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Thu, 14 Dec 2017 13:02:30 +0100
Subject: [PATCH] haskell-hoogle: fix build of latest version

---
 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 9e490a7cec6e..4f5ad118a87a 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -1016,4 +1016,7 @@ self: super: {
     unliftio = self.unliftio_0_2_0_0;
   });
 
+  # Hoogle needs a newer version than lts-9 provides.
+  hoogle = super.hoogle.override { haskell-src-exts = self.haskell-src-exts_1_20_1; };
+
 }