02/02: gnu: Add sng.

[guix-commits]

vagrantc pushed a commit to branch master
in repository guix.

commit d54ca1cd4d77a945ad07dba34a69c23a3e57b3f1
Author: Vagrant Cascadian <address@hidden>
Date:   Fri Sep 6 16:48:40 2019 -0700

    gnu: Add sng.
    
    * gnu/packages/images (sng): New variable.
    * gnu/packages/package-management (diffoscope)[native-inputs]: Add sng.
---
 gnu/packages/image.scm              | 39 +++++++++++++++++++++++++++++++++++++
 gnu/packages/package-management.scm |  1 +
 2 files changed, 40 insertions(+)

diff --git a/gnu/packages/image.scm b/gnu/packages/image.scm
index 433e59c..2a9ee99 100644
--- a/gnu/packages/image.scm
+++ b/gnu/packages/image.scm
@@ -1836,3 +1836,42 @@ identical visual appearance.")
 to the standard output.  It works well together with grim.")
    ;; MIT license.
    (license license:expat)))
+
+(define-public sng
+  (package
+    (name "sng")
+    (version "1.1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "mirror://sourceforge/sng/sng-"
+                           version ".tar.gz"))
+       (sha256
+        (base32 "06a6ydvx9xb3vxvrzdrg3hq0rjwwj9ibr7fyyxjxq6qx1j3mb70i"))))
+    (build-system gnu-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'check 'link-pngsuite
+           ;; tests expect pngsuite in source dir
+           (lambda* (#:key inputs #:allow-other-keys)
+             (symlink (assoc-ref inputs "pngsuite") "pngsuite")
+             #t)))
+       #:configure-flags
+       (list (string-append "--with-rgbtxt="
+                            (assoc-ref %build-inputs "xorg-rgb")
+                            "/share/X11/rgb.txt"))))
+    (inputs `(("xorg-rgb" ,xorg-rgb)
+              ("libpng" ,libpng)))
+    (native-inputs `(("pngsuite" ,pngsuite)))
+    (home-page "http://sng.sourceforge.net";)
+    (synopsis "Markup language for representing PNG contents")
+    (description "SNG (Scriptable Network Graphics) is a minilanguage designed
+specifically to represent the entire contents of a PNG (Portable Network
+Graphics) file in an editable form.  Thus, SNGs representing elaborate
+graphics images and ancillary chunk data can be readily generated or modified
+using only text tools.
+
+SNG is implemented by a compiler/decompiler called sng that
+losslessly translates between SNG and PNG.")
+    (license license:zlib)))
diff --git a/gnu/packages/package-management.scm 
b/gnu/packages/package-management.scm
index 579a200..b9eabfb 100644
--- a/gnu/packages/package-management.scm
+++ b/gnu/packages/package-management.scm
@@ -660,6 +660,7 @@ transactions from C or Python.")
                        ("openssh" ,openssh)
                        ("poppler" ,poppler)
                        ("rpm" ,rpm)
+                       ("sng" ,sng)
                        ("sqlite" ,sqlite)
                        ("squashfs-tools" ,squashfs-tools)
                        ("tcpdump" ,tcpdump)