diff --git a/pkgs/applications/office/trytond/default.nix b/pkgs/applications/office/trytond/default.nix
new file mode 100644
index 000000000000..e77287faae25
--- /dev/null
+++ b/pkgs/applications/office/trytond/default.nix
@@ -0,0 +1,49 @@
+{ stdenv, fetchurl, python2Packages
+, withPostgresql ? true }:
+
+with stdenv.lib;
+
+python2Packages.buildPythonApplication rec {
+  name = "trytond-${version}";
+  version = "4.2.1";
+  src = fetchurl {
+    url = "mirror://pypi/t/trytond/${name}.tar.gz";
+    sha256 = "1ijjpbsf3s0s7ksbi7xgzss4jgr14q5hqsyf6d68l8hwardrwpj7";
+  };
+
+  # Tells the tests which database to use
+  DB_NAME = ":memory:";
+
+  buildInputs = with python2Packages; [
+    mock
+  ];
+  propagatedBuildInputs = with python2Packages; ([
+    dateutil
+    lxml
+    polib
+    python-sql
+    relatorio
+    werkzeug
+    wrapt
+
+    # extra dependencies
+    bcrypt
+    pydot
+    python-Levenshtein
+    simplejson
+  ] ++ stdenv.lib.optional withPostgresql psycopg2);
+  meta = {
+    description = "The server of the Tryton application platform";
+    longDescription = ''
+      The server for Tryton, a three-tier high-level general purpose
+      application platform under the license GPL-3 written in Python and using
+      PostgreSQL as database engine.
+
+      It is the core base of a complete business solution providing
+      modularity, scalability and security.
+    '';
+    homepage = http://www.tryton.org/;
+    license = licenses.gpl3Plus;
+    maintainers = [ maintainers.johbo ];
+  };
+}
diff --git a/pkgs/development/python-modules/python-sql/default.nix b/pkgs/development/python-modules/python-sql/default.nix
new file mode 100644
index 000000000000..30f734d57193
--- /dev/null
+++ b/pkgs/development/python-modules/python-sql/default.nix
@@ -0,0 +1,16 @@
+{ lib, fetchurl, buildPythonPackage }:
+
+buildPythonPackage rec {
+  name = "python-sql-${version}";
+  version = "0.8";
+  src = fetchurl {
+    url = "mirror://pypi/p/python-sql/${name}.tar.gz";
+    sha256 = "0xik939sxqfqqbpgcsnfjnws692bjip32khgwhq1ycphfy7df3h2";
+  };
+  meta = {
+    homepage = http://python-sql.tryton.org/;
+    description = "A library to write SQL queries in a pythonic way";
+    maintainers = with lib.maintainers; [ johbo ];
+    license = lib.licenses.bsd3;
+  };
+}
diff --git a/pkgs/development/python-modules/relatorio/default.nix b/pkgs/development/python-modules/relatorio/default.nix
new file mode 100644
index 000000000000..4f2c3da8936e
--- /dev/null
+++ b/pkgs/development/python-modules/relatorio/default.nix
@@ -0,0 +1,20 @@
+{ lib, fetchurl, buildPythonPackage, genshi, lxml }:
+
+buildPythonPackage rec {
+  name = "relatorio-${version}";
+  version = "0.6.4";
+  src = fetchurl {
+    url = "mirror://pypi/r/relatorio/${name}.tar.gz";
+    sha256 = "0lincq79mzgazwd9gh41dybjh9c3n87r83pl8nk3j79aihyfk84z";
+  };
+  propagatedBuildInputs = [
+    genshi
+    lxml
+  ];
+  meta = {
+    homepage = http://relatorio.tryton.org/;
+    description = "A templating library able to output odt and pdf files";
+    maintainers = with lib.maintainers; [ johbo ];
+    license = lib.licenses.gpl3;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 51f184336a7b..d7069d116ff1 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4134,6 +4134,8 @@ with pkgs;
 
   tryton = callPackage ../applications/office/tryton { };
 
+  trytond = callPackage ../applications/office/trytond { };
+
   omapd = callPackage ../tools/security/omapd { };
 
   ttf2pt1 = callPackage ../tools/misc/ttf2pt1 { };
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 9ab7ebb9cf54..4e429ff4c2aa 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -332,6 +332,8 @@ in {
 
   pysideTools = callPackage ../development/python-modules/pyside/tools.nix { };
 
+  python-sql = callPackage ../development/python-modules/python-sql { };
+
   pytimeparse = buildPythonPackage rec {
     pname = "pytimeparse";
     version = "1.1.6";
@@ -354,6 +356,8 @@ in {
 
   pyxml = if !isPy3k then callPackage ../development/python-modules/pyxml{ } else throw "pyxml not supported for interpreter ${python.executable}";
 
+  relatorio = callPackage ../development/python-modules/relatorio { };
+
   rhpl = if !isPy3k then callPackage ../development/python-modules/rhpl {} else throw "rhpl not supported for interpreter ${python.executable}";
 
   sip = callPackage ../development/python-modules/sip { };