gnu: Add groff.

* gnu/packages/groff.scm: New file.
* Makefile.am (MODULES): Add it.

Makefile.am

@@ -77,6 +77,7 @@ MODULES =					\
   gnu/packages/gnupg.scm			\
   gnu/packages/gnutls.scm			\
   gnu/packages/gperf.scm			\
+  gnu/packages/groff.scm			\
   gnu/packages/gsasl.scm			\
   gnu/packages/guile.scm			\
   gnu/packages/help2man.scm			\

gnu/packages/groff.scm

@@ -0,0 +1,53 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2013 Andreas Enge <andreas@enge.fr>
+;;;
+;;; 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 groff)
+  #:use-module (guix licenses)
+  #:use-module (guix packages)
+  #:use-module (guix download)
+  #:use-module (guix build-system gnu)
+  #:use-module (gnu packages)
+  #:use-module (gnu packages bison)
+  #:use-module (gnu packages ghostscript)
+  #:use-module (gnu packages netpbm)
+  #:use-module (gnu packages perl)
+  #:use-module (gnu packages texinfo))
+
+(define-public groff
+  (package
+   (name "groff")
+   (version "1.22.1")
+   (source (origin
+            (method url-fetch)
+            (uri (string-append "mirror://gnu/groff/groff-" version
+                                ".tar.gz"))
+            (sha256 (base32
+                     "1kihja9sj182pqms8lah2nn3y96rqccws7w04f7f7wpy84vs5bvn"))))
+   (build-system gnu-build-system)
+   (inputs `(("bison" ,bison)
+             ("ghostscript" ,ghostscript)
+             ("netpbm" ,netpbm)
+             ("perl" ,perl)
+             ("psutils" ,psutils)
+             ("texinfo" ,texinfo)))
+   (synopsis "GNU Troff text formatting system")
+   (description
+    "GNU Troff (Groff) is a software typesetting package which reads plain
+text mixed with formatting commands and produces formatted output.")
+   (license gpl3+)
+   (home-page "http://www.gnu.org/software/groff/")))