From d3eaa5a4de5e171d79ea0d10f7fc5172447a7322 Mon Sep 17 00:00:00 2001
From: Hamish Mackenzie <Hamish.K.Mackenzie@googlemail.com>
Date: Tue, 9 Jan 2018 14:38:54 +1300
Subject: [PATCH] haskell: Fix depending on libs with internal libs on darwin.

---
 pkgs/development/haskell-modules/with-packages-wrapper.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/haskell-modules/with-packages-wrapper.nix b/pkgs/development/haskell-modules/with-packages-wrapper.nix
index ac484b3c1124..3cbf0c004fd6 100644
--- a/pkgs/development/haskell-modules/with-packages-wrapper.nix
+++ b/pkgs/development/haskell-modules/with-packages-wrapper.nix
@@ -107,7 +107,7 @@ symlinkJoin {
     # Clean up the old links that may have been (transitively) included by
     # symlinkJoin:
     rm -f $dynamicLinksDir/*
-    for d in $(grep dynamic-library-dirs $packageConfDir/*|awk '{print $2}'); do
+    for d in $(grep dynamic-library-dirs $packageConfDir/*|awk '{print $2}'|sort -u); do
       ln -s $d/*.dylib $dynamicLinksDir
     done
     for f in $packageConfDir/*.conf; do