gnu: Add GCR.

* gnu/packages/gnome.scm (gcr): New variable.

gnu/packages/gnome.scm

@@ -7,6 +7,7 @@
 ;;; Copyright © 2015 Sou Bunnbu <iyzsong@gmail.com>
 ;;; Copyright © 2015 Andy Wingo <wingo@igalia.com>
 ;;; Copyright © 2015 David Hashe <david.hashe@dhashe.com>
+;;; Copyright © 2015 Ricardo Wurmus <rekado@elephly.net>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -181,6 +182,50 @@ Gnome project.  It includes xml2po tool which makes it easier to translate
 and keep up to date translations of documentation.")
     (license license:gpl2+))) ; xslt under lgpl
 
+(define-public gcr
+  (package
+    (name "gcr")
+    (version "3.16.0")
+    (source (origin
+             (method url-fetch)
+             (uri (string-append "mirror://gnome/sources/" name "/"
+                                 (version-major+minor version)  "/"
+                                 name "-" version ".tar.xz"))
+             (sha256
+              (base32
+               "0xfhi0w358lvca1jjx24x2gm67mif33dsnmi9cv5i0f83ks8vzpc"))))
+    (build-system gnu-build-system)
+    (arguments
+     '(#:tests? #f ;25 of 598 tests fail because /var/lib/dbus/machine-id does
+                   ;not exist
+       #:phases (modify-phases %standard-phases
+                  (add-before
+                   'check 'pre-check
+                   (lambda* (#:key inputs #:allow-other-keys)
+                     (substitute* "build/tap-driver"
+                       (("/usr/bin/env python") (which "python"))))))))
+    (inputs
+     `(("dbus" ,dbus)
+       ("gnupg" ,gnupg) ;called as a child process during tests
+       ("libgcrypt" ,libgcrypt)))
+    (native-inputs
+     `(("python" ,python-2) ;for tests
+       ("pkg-config" ,pkg-config)
+       ("glib" ,glib "bin")
+       ("intltool" ,intltool)))
+    ;; mentioned in gck.pc, gcr.pc and gcr-ui.pc
+    (propagated-inputs
+     `(("p11-kit" ,p11-kit)
+       ("glib" ,glib)
+       ("gtk+" ,gtk+)))
+    (home-page "http://www.gnome.org")
+    (synopsis "Libraries for displaying certificates and accessing key stores")
+    (description
+     "The GCR package contains libraries used for displaying certificates and
+accessing key stores.  It also provides the viewer for crypto files on the
+GNOME Desktop.")
+    (license license:lgpl2.1+)))
+
 (define-public libgnome-keyring
   (package
     (name "libgnome-keyring")