From a6c39ed207e5d6dbdf28ab812286e123505ac71f Mon Sep 17 00:00:00 2001
From: Shea Levy <shea@shealevy.com>
Date: Sat, 8 Apr 2017 16:21:57 -0400
Subject: [PATCH] haskell-lib: Add overrideSrc helper

---
 pkgs/development/haskell-modules/lib.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/development/haskell-modules/lib.nix b/pkgs/development/haskell-modules/lib.nix
index f88f2f2cf54..0aed2211448 100644
--- a/pkgs/development/haskell-modules/lib.nix
+++ b/pkgs/development/haskell-modules/lib.nix
@@ -104,4 +104,7 @@ rec {
 
   triggerRebuild = drv: i: overrideCabal drv (drv: { postUnpack = ": trigger rebuild ${toString i}"; });
 
+  overrideSrc = drv: { src, version ? drv.version }:
+    overrideCabal drv (_: { inherit src version; editedCabalFile = null; });
+
 }