gnu: Add GNU cppi.

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

Makefile.am

@@ -70,6 +70,7 @@ MODULES =					\
   gnu/packages/cmake.scm			\
   gnu/packages/compression.scm			\
   gnu/packages/cpio.scm				\
+  gnu/packages/cppi.scm				\
   gnu/packages/curl.scm				\
   gnu/packages/cyrus-sasl.scm			\
   gnu/packages/dejagnu.scm			\

gnu/packages/cppi.scm

@@ -0,0 +1,45 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2013 Ludovic Courtès <ludo@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 cppi)
+  #:use-module (guix packages)
+  #:use-module (guix download)
+  #:use-module (guix build-system gnu)
+  #:use-module (guix licenses))
+
+(define-public cppi
+  (package
+    (name "cppi")
+    (version "1.18")
+    (source (origin
+             (method url-fetch)
+             (uri (string-append "mirror://gnu/cppi/cppi-"
+                                 version ".tar.xz"))
+             (sha256
+              (base32
+               "1jk42cjaggk71rimjnx3qpmb6hivps0917vl3z7wbxk3i2whb98j"))))
+    (build-system gnu-build-system)
+    (home-page "http://www.gnu.org/software/cppi/")
+    (synopsis "A cpp directive indenter")
+    (description
+     "GNU cppi indents C preprocessor directives to reflect their nesting and
+ensure that there is exactly one space character between each #if, #elif,
+#define directive and the following token.  The number of spaces between the
+`#' and the following directive must correspond to the level of nesting of
+that directive.")
+    (license gpl3+)))