From 70517278f143d7fe9217da4871e2daecb546293d Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Thu, 30 Sep 2021 16:55:26 +0200
Subject: [PATCH] =?UTF-8?q?perlPackages.ImagePNGLibpng:=200.56=20=E2=86=92?=
 =?UTF-8?q?=200.57?=
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https://metacpan.org/release/BKB/Image-PNG-Libpng-0.57/source/Changes

Possible breaking changes:
- Remove any2gray (is now in Image::PNG::Data) – does not seem to be used in gscan2pdf (only consumer of this library in Nixpkgs)
---
 pkgs/top-level/perl-packages.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/top-level/perl-packages.nix b/pkgs/top-level/perl-packages.nix
index 1e21251c315c..b081a81e887c 100644
--- a/pkgs/top-level/perl-packages.nix
+++ b/pkgs/top-level/perl-packages.nix
@@ -10454,10 +10454,10 @@ let
 
   ImagePNGLibpng = buildPerlPackage {
     pname = "Image-PNG-Libpng";
-    version = "0.56";
+    version = "0.57";
     src = fetchurl {
       url = "mirror://cpan/authors/id/B/BK/BKB/Image-PNG-Libpng-0.56.tar.gz";
-      sha256 = "1nf7qcql7b2w98i859f76q1vb4b2zd0k0ypjbsw7ngs2zzmvzyzs";
+      sha256 = "+vu/6/9CP3u4XvJ6MEH7YpG1AzbHpYIiSlysQzHDx9k=";
     };
     buildInputs = [ pkgs.libpng ];
     meta = {