1 files changed, 2 insertions, 0 deletions
diff --git a/pkgs/development/haskell-modules/configuration-ghc-7.10.x.nix b/pkgs/development/haskell-modules/configuration-ghc-7.10.x.nix
index ee0fcccd6331..6a7fe29b80fa 100644
--- a/pkgs/development/haskell-modules/configuration-ghc-7.10.x.nix
+++ b/pkgs/development/haskell-modules/configuration-ghc-7.10.x.nix
@@ -44,6 +44,8 @@ self: super: {
 
   gtk2hs-buildtools = super.gtk2hs-buildtools.override { Cabal = self.Cabal_1_24_2_0; };
 
+  megaparsec = addBuildDepend super.megaparsec self.fail;
+
   Extra = appendPatch super.Extra (pkgs.fetchpatch {
     url = "https://github.com/seereason/sr-extra/commit/29787ad4c20c962924b823d02a7335da98143603.patch";
     sha256 = "193i1xmq6z0jalwmq0mhqk1khz6zz0i1hs6lgfd7ybd6qyaqnf5f";