From a850ddbefc28f947833abb021aa2eb1390c900d4 Mon Sep 17 00:00:00 2001
From: hsloan <ishaqsloan@gmail.com>
Date: Wed, 28 Jun 2017 16:21:38 -0400
Subject: [PATCH] libpng default: Don't use stdenv.cross

---
 pkgs/development/libraries/libpng/default.nix | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/libraries/libpng/default.nix b/pkgs/development/libraries/libpng/default.nix
index 92e0fa339b2..c2f50af84ca 100644
--- a/pkgs/development/libraries/libpng/default.nix
+++ b/pkgs/development/libraries/libpng/default.nix
@@ -1,4 +1,6 @@
-{ stdenv, fetchurl, zlib, apngSupport ? true }:
+{ stdenv, fetchurl, zlib, apngSupport ? true
+, buildPlatform, hostPlatform
+}:
 
 assert zlib != null;
 
@@ -29,7 +31,7 @@ in stdenv.mkDerivation rec {
 
   # it's hard to cross-run tests and some check programs didn't compile anyway
   makeFlags = stdenv.lib.optional (!doCheck) "check_PROGRAMS=";
-  doCheck = ! stdenv ? cross;
+  doCheck = hostPlatform == buildPlatform;
 
   passthru = { inherit zlib; };