distro: Add GNU Ed.

* distro/packages/ed.scm: New file.
* Makefile.am (MODULES): Add it.

Makefile.am

@@ -46,6 +46,7 @@ MODULES =					\
   distro/packages/bdw-gc.scm			\
   distro/packages/bootstrap.scm			\
   distro/packages/compression.scm		\
+  distro/packages/ed.scm			\
   distro/packages/gawk.scm			\
   distro/packages/gnupg.scm			\
   distro/packages/gnutls.scm			\

distro/packages/ed.scm

@@ -0,0 +1,52 @@
+;;; Guix --- Nix package management from Guile.         -*- coding: utf-8 -*-
+;;; Copyright (C) 2012 Nikita Karetnikov <nikita@karetnikov.org>
+;;;
+;;; This file is part of Guix.
+;;;
+;;; 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.
+;;;
+;;; 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 Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (distro packages ed)
+  #:use-module (guix packages)
+  #:use-module (guix download)
+  #:use-module (guix build-system gnu))
+
+(define-public ed
+  (package
+    (name "ed")
+    (version "1.5")
+    (source
+     (origin
+      (method url-fetch)
+      (uri (string-append
+            "mirror://gnu/ed/ed-"
+            version
+            ".tar.gz"))
+      (sha256
+       (base32
+        "18gvhyhwpabmgv4lh21lg8vl3z7acdyhh2mr2kj9g75wksj39pcp"))))
+    (build-system gnu-build-system)
+    (arguments '(#:configure-flags '("CC=gcc")))
+    (home-page "http://www.gnu.org/software/ed/")
+    (synopsis
+     "GNU ed, an implementation of the standard Unix editor")
+    (description
+     "GNU ed is a line-oriented text editor.  It is used to create,
+display, modify and otherwise manipulate text files, both
+interactively and via shell scripts.  A restricted version of ed,
+red, can only edit files in the current directory and cannot
+execute shell commands.  Ed is the \"standard\" text editor in the
+sense that it is the original editor for Unix, and thus widely
+available.  For most purposes, however, it is superseded by
+full-screen editors such as GNU Emacs or GNU Moe.")
+    (license "GPLv3+")))