From 9f2bbf65af24e11451f40ac91e87accd3d16411e Mon Sep 17 00:00:00 2001
From: Shea Levy <shea@shealevy.com>
Date: Mon, 1 May 2017 18:21:42 -0400
Subject: [PATCH] haskellSrc2nix: preferLocalBuild and use unwrapped cabal2nix.

No need to download bazaar etc...
---
 pkgs/development/haskell-modules/make-package-set.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/haskell-modules/make-package-set.nix b/pkgs/development/haskell-modules/make-package-set.nix
index 6a17762a1fe..5192e09e2de 100644
--- a/pkgs/development/haskell-modules/make-package-set.nix
+++ b/pkgs/development/haskell-modules/make-package-set.nix
@@ -89,7 +89,8 @@ self: let
       sha256Arg = if isNull sha256 then "--sha256=" else ''--sha256="${sha256}"'';
     in pkgs.stdenv.mkDerivation {
       name = "cabal2nix-${name}";
-      buildInputs = [ pkgs.cabal2nix ];
+      buildInputs = [ pkgs.haskellPackages.cabal2nix ];
+      preferLocalBuild = true;
       phases = ["installPhase"];
       LANG = "en_US.UTF-8";
       LOCALE_ARCHIVE = pkgs.lib.optionalString pkgs.stdenv.isLinux "${pkgs.glibcLocales}/lib/locale/locale-archive";