From 3096d03435bb177af8c4868a8efa637b393f2715 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Mon, 1 Jun 2015 20:52:03 +0200
Subject: Revert "Refactor mkFlag / shouldUsePkg into the nixpkgs libraries"

This reverts commit 25a148fa196b944b3f134527da87e43d88c066f9.
---
 pkgs/os-specific/linux/ffado/default.nix | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'pkgs/os-specific/linux/ffado')

diff --git a/pkgs/os-specific/linux/ffado/default.nix b/pkgs/os-specific/linux/ffado/default.nix
index 49a7d820a1c..b0f545b2171 100644
--- a/pkgs/os-specific/linux/ffado/default.nix
+++ b/pkgs/os-specific/linux/ffado/default.nix
@@ -9,8 +9,10 @@
 , prefix ? ""
 }:
 
-with stdenv;
 let
+
+  shouldUsePkg = pkg: if pkg != null && stdenv.lib.any (x: x == stdenv.system) pkg.meta.platforms then pkg else null;
+
   libOnly = prefix == "lib";
 
   optLibjack2 = shouldUsePkg libjack2;
-- 
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