From fcd895afb30f54c0181885231f9b8f8c256081f0 Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Fri, 8 Mar 2013 13:29:34 +0100
Subject: [PATCH] pkgs/build-support/cabal: disable the split objects feature
 on Darwin by default

According to <http://hackage.haskell.org/trac/ghc/ticket/4013>, this
feature won't work with XCode versions older than 3.2.

This means that Mac users will have considerably larger binaries because
some build-time dependencies (such as HTTP) will be mis-detected as
run-time dependencies.
---
 pkgs/build-support/cabal/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/build-support/cabal/default.nix b/pkgs/build-support/cabal/default.nix
index 334b7e6f2c26..38f2c4c61152 100644
--- a/pkgs/build-support/cabal/default.nix
+++ b/pkgs/build-support/cabal/default.nix
@@ -88,7 +88,7 @@
             jailbreak = false;
 
             # pass the '--enable-split-objs' flag to cabal in the configure stage
-            enableSplitObjs = true;
+            enableSplitObjs = !stdenv.isDarwin;         # http://hackage.haskell.org/trac/ghc/ticket/4013
 
             # pass the '--enable-tests' flag to cabal in the configure stage
             # and run any regression test suites the package might have