gnu: Add trytond.

* gnu/packages/tryton.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.
* gnu/packages/tryton.scm (trytond): New variable.

Signed-off-by: Arun Isaac <arunisaac@systemreboot.net>

gnu/local.mk

@@ -321,6 +321,7 @@ GNU_SYSTEM_MODULES =				\
   %D%/packages/protobuf.scm			\
   %D%/packages/pv.scm				\
   %D%/packages/python.scm			\
+  %D%/packages/tryton.scm			\
   %D%/packages/qemu.scm				\
   %D%/packages/qt.scm				\
   %D%/packages/ragel.scm			\

gnu/packages/tryton.scm

@@ -0,0 +1,67 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2017 Adriano Peluso <catonano@gmail.com>
+;;;
+;;; 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 tryton)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (gnu packages)
+  #:use-module (gnu packages python)
+  #:use-module (guix packages)
+  #:use-module (guix download)
+  #:use-module (guix build-system python))
+
+(define-public trytond
+  (package
+    (name "trytond")
+    (version "4.4.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://downloads.tryton.org/4.4/trytond-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "15gm34qwj5fpnkqvrxzndl8653zbczhsa76dm1gi4cqj1r29bbpr"))))
+    (build-system python-build-system)
+    (inputs
+     `(("python-dateutil" ,python-dateutil)
+       ("python-genshi" ,python-genshi)
+       ("python-polib" ,python-polib)
+       ;; there's no python-mysql in Guix right now
+       ;; so python-psycopg2 (postgresql) only for now
+       ("python-psycopg2" ,python-psycopg2)
+       ("python-relatorio" ,python-relatorio)
+       ("python-lxml" ,python-lxml)
+       ("python-sql" ,python-sql)
+       ("python-werkzeug" ,python-werkzeug)
+       ("python-wrapt" ,python-wrapt)))
+    (native-inputs
+     `(("python-mock" ,python-mock)))
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'check 'preparations
+           (lambda _
+             (setenv "DB_NAME" ":memory:"))))))
+    (home-page "https://www.tryton.org/")
+    (synopsis "Server component of Tryton")
+    (description "Tryton is a three-tier high-level general purpose
+application platform using PostgreSQL as its main database engine.  It is the
+core base of a complete business solution providing modularity, scalability
+and security.")
+    (license license:gpl3+)))