From 6df2b09015fc6f107ee20d0f75375266efc72fd3 Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Sat, 5 Apr 2014 00:19:56 +0200
Subject: [PATCH] haskell-ghc-mod: revert update to version 4.x

flymake-mode no longer works in the new version. This needs further
testing before we can upgrade.
---
 .../libraries/haskell/ghc-mod/default.nix        | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/pkgs/development/libraries/haskell/ghc-mod/default.nix b/pkgs/development/libraries/haskell/ghc-mod/default.nix
index fca6ea9cd557..260fff8ae827 100644
--- a/pkgs/development/libraries/haskell/ghc-mod/default.nix
+++ b/pkgs/development/libraries/haskell/ghc-mod/default.nix
@@ -1,20 +1,20 @@
-{ cabal, Cabal, convertible, doctest, emacs, filepath, ghcSybUtils
-, hlint, hspec, ioChoice, syb, time, transformers
+{ cabal, Cabal, convertible, doctest, emacs, filepath, ghcPaths
+, ghcSybUtils, hlint, hspec, ioChoice, syb, time, transformers
 }:
 
 cabal.mkDerivation (self: {
   pname = "ghc-mod";
-  version = "4.0.0";
-  sha256 = "11l0wycx0l0wqq8a3wsiw88fr8pahjzh65yxqw6r1rgj10cszai8";
+  version = "3.1.7";
+  sha256 = "1mv6m1fcqkm4i27jw1aniwfq2dhpn4m7kicyq4l70zmkfr7y7c5s";
   isLibrary = true;
   isExecutable = true;
   buildDepends = [
-    Cabal convertible filepath ghcSybUtils hlint ioChoice syb time
-    transformers
+    Cabal convertible filepath ghcPaths ghcSybUtils hlint ioChoice syb
+    time transformers
   ];
   testDepends = [
-    Cabal convertible doctest filepath ghcSybUtils hlint hspec ioChoice
-    syb time transformers
+    Cabal convertible doctest filepath ghcPaths ghcSybUtils hlint hspec
+    ioChoice syb time transformers
   ];
   buildTools = [ emacs ];
   postInstall = ''