From 68647a4de5afa4a5743e262bf62b0d7048e08a95 Mon Sep 17 00:00:00 2001
From: Eric Seidel <gridaphobe@gmail.com>
Date: Sat, 21 Mar 2015 09:13:06 -0700
Subject: [PATCH] coreutils: don't use bare `sed` on darwin

it will be BSD sed instead of GNU sed
---
 pkgs/tools/misc/coreutils/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/tools/misc/coreutils/default.nix b/pkgs/tools/misc/coreutils/default.nix
index ee85a4349c1..1dc5bfaccfb 100644
--- a/pkgs/tools/misc/coreutils/default.nix
+++ b/pkgs/tools/misc/coreutils/default.nix
@@ -19,7 +19,7 @@ let
     };
 
     # The test tends to fail on btrfs and maybe other unusual filesystems.
-    postPatch = ''
+    postPatch = stdenv.lib.optionalString (!stdenv.isDarwin) ''
       sed '2i echo Skipping dd sparse test && exit 0' -i ./tests/dd/sparse.sh
     '';