From 80509ab287687591ba179535bfc1cec88013a0d9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20=C4=8Cun=C3=A1t?= <vcunat@gmail.com>
Date: Tue, 9 Feb 2016 19:14:18 +0100
Subject: [PATCH] libpng: fix on mingw by disabling doCheck

---
 pkgs/development/libraries/libpng/default.nix | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/libpng/default.nix b/pkgs/development/libraries/libpng/default.nix
index 6faed97aaee..a5a0e1d42a3 100644
--- a/pkgs/development/libraries/libpng/default.nix
+++ b/pkgs/development/libraries/libpng/default.nix
@@ -26,7 +26,9 @@ in stdenv.mkDerivation rec {
 
   preConfigure = "export bin=$dev";
 
-  doCheck = true;
+  # 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;
 
   postInstall = ''mv "$out/bin" "$dev/bin"'';