01/03: gnu: Add libpng-1.2.

[Ricardo Wurmus]

rekado pushed a commit to branch master
in repository guix.

commit 2df831a78a933c04d64c400402a5cb1889b2d93a
Author: Ricardo Wurmus <address@hidden>
Date:   Wed Apr 13 21:30:28 2016 +0200

    gnu: Add libpng-1.2.
    
    * gnu/packages/image.scm (libpng-1.2): New variable.
---
 gnu/packages/image.scm |   18 +++++++++++++++++-
 1 files changed, 17 insertions(+), 1 deletions(-)

diff --git a/gnu/packages/image.scm b/gnu/packages/image.scm
index aaddce1..ba7c8c3 100644
--- a/gnu/packages/image.scm
+++ b/gnu/packages/image.scm
@@ -2,7 +2,7 @@
 ;;; Copyright © 2013, 2015, 2016 Andreas Enge <address@hidden>
 ;;; Copyright © 2014, 2015, 2016 Mark H Weaver <address@hidden>
 ;;; Copyright © 2014, 2015 Alex Kost <address@hidden>
-;;; Copyright © 2014 Ricardo Wurmus <address@hidden>
+;;; Copyright © 2014, 2016 Ricardo Wurmus <address@hidden>
 ;;; Copyright © 2015 Taylan Ulrich Bayırlı/Kammer <address@hidden>
 ;;; Copyright © 2015 Amirouche Boubekki <address@hidden>
 ;;; Copyright © 2014 John Darrington <address@hidden>
@@ -76,6 +76,22 @@ library.  It supports almost all PNG features and is 
extensible.")
    (license license:zlib)
    (home-page "http://www.libpng.org/pub/png/libpng.html";)))
 
+(define-public libpng-1.2
+  (package
+    (inherit libpng)
+    (version "1.2.56")
+    (source
+     (origin
+       (method url-fetch)
+       ;; Note: upstream removes older tarballs.
+       (uri (list (string-append "mirror://sourceforge/libpng/libpng12/"
+                                 version "/libpng-" version ".tar.xz")
+                  (string-append
+                   "ftp://ftp.simplesystems.org/pub/libpng/png/src";
+                   "/libpng12/libpng-" version ".tar.xz")))
+       (sha256
+        (base32 "1ghd03p353x0vi4dk83n1nlldg11w7vqdk3f99rkgfb82ic59ki4"))))))
+
 (define-public libjpeg
   (package
    (name "libjpeg")