From e72b4051048227cdfd9416660f0c7e64fab0f847 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20=C4=8Cun=C3=A1t?= <vcunat@gmail.com>
Date: Thu, 30 Jul 2015 13:47:50 +0200
Subject: [PATCH] libpng-1.2: maintenance update

Also drop xz input, as it isn't needed (stdenv unpacks xz by itself).
---
 pkgs/development/libraries/libpng/12.nix | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/pkgs/development/libraries/libpng/12.nix b/pkgs/development/libraries/libpng/12.nix
index fae6f9ba556..2a523793559 100644
--- a/pkgs/development/libraries/libpng/12.nix
+++ b/pkgs/development/libraries/libpng/12.nix
@@ -1,19 +1,17 @@
-{ stdenv, fetchurl, zlib, xz }:
+{ stdenv, fetchurl, zlib }:
 
 assert !(stdenv ? cross) -> zlib != null;
 
 stdenv.mkDerivation rec {
-  name = "libpng-1.2.51";
+  name = "libpng-1.2.52";
 
   src = fetchurl {
     url = "mirror://sourceforge/libpng/${name}.tar.xz";
-    sha256 = "0jkdlmnvn72jwm94dp98pznm9fy7alvcr2zpfh2dgbr2n09vimy7";
+    sha256 = "1h0fa67x4bh7gcdh7qx87m4xpkdfqa7ihd4h678dcyh52jzhzyyl";
   };
 
   propagatedBuildInputs = [ zlib ];
 
-  nativeBuildInputs = [ xz ];
-
   passthru = { inherit zlib; };
 
   crossAttrs = stdenv.lib.optionalAttrs (stdenv.cross.libc == "libSystem") {