gnu: Add gnu-standards.

* gnu/packages/gnu-doc.scm: New file.
* gnu-system.am: Add it.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu-system.am

@@ -134,6 +134,7 @@ GNU_SYSTEM_MODULES =				\
   gnu/packages/gl.scm				\
   gnu/packages/glib.scm				\
   gnu/packages/gnome.scm			\
+  gnu/packages/gnu-doc.scm			\
   gnu/packages/gnucash.scm			\
   gnu/packages/gnunet.scm			\
   gnu/packages/gnupg.scm			\

gnu/packages/gnu-doc.scm

@@ -0,0 +1,74 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu packages gnu-doc)
+  #:use-module (gnu packages base)
+  #:use-module (gnu packages compression)
+  #:use-module (gnu packages texinfo)
+
+  #:use-module (guix build-system trivial)
+  #:use-module (guix cvs-download)
+  #:use-module (guix licenses)
+  #:use-module (guix packages))
+
+(define-public gnu-standards
+  (package
+    (name "gnu-standards")
+    (version "2016-03-25")
+    (source
+     (origin
+       (method cvs-fetch)
+       (uri (cvs-reference
+             (root-directory
+              ":pserver:anonymous@cvs.savannah.gnu.org:/sources/gnustandards")
+             (module "gnustandards")
+             (revision "2016-03-25")))
+       (sha256
+        (base32
+         "0qn7mzdjqwc6h9prin22x6kj9iqipxpbzldzhmis7q4x4hpi61vj"))))
+    (build-system trivial-build-system)
+    (native-inputs `(("gzip" ,gzip)
+                     ("source" ,source)
+                     ("texinfo" ,texinfo)))
+    (arguments
+     `(#:modules ((guix build utils))
+       #:builder
+        (begin
+          (use-modules (guix build utils))
+          (let ((gzip (assoc-ref %build-inputs "gzip"))
+                (source (assoc-ref %build-inputs "source"))
+                (texinfo (assoc-ref %build-inputs "texinfo"))
+                (info-dir (string-append %output "/share/info")))
+            (setenv "PATH" (string-append gzip "/bin"
+                                          ":" texinfo "/bin"))
+            (mkdir-p info-dir)
+            (system* "makeinfo" "--output" info-dir
+                     (string-append source "/maintain.texi"))
+            (system* "makeinfo" "--output" info-dir
+                     (string-append source "/standards.texi"))
+            (system* "gzip" (string-append info-dir "/maintain.info"))
+            (system* "gzip" (string-append info-dir "/standards.info"))))))
+    (home-page "http://www.gnu.org/prep/standards/")
+    (synopsis "GNU coding standards and maintainer information")
+    (description "The GNU Coding Standards were written by Richard Stallman
+and other GNU Project volunteers.  Their purpose is to make the GNU system
+clean, consistent, and easy to install.
+
+The information for maintainers of GNU software has guidelines and advice for
+someone who is the maintainer of a GNU program on behalf of the GNU Project.")
+    (license fdl1.3+)))