diff --git a/pkgs/applications/office/trytond/default.nix b/pkgs/development/python-modules/trytond/default.nix
similarity index 79%
rename from pkgs/applications/office/trytond/default.nix
rename to pkgs/development/python-modules/trytond/default.nix
index 15d5fa6748a..4b8afbddb37 100644
--- a/pkgs/applications/office/trytond/default.nix
+++ b/pkgs/development/python-modules/trytond/default.nix
@@ -1,14 +1,31 @@
 { stdenv
-, python3Packages
+, buildPythonApplication
+, fetchPypi
+, mock
+, lxml
+, relatorio
+, genshi
+, dateutil
+, polib
+, python-sql
+, werkzeug
+, wrapt
+, passlib
+, bcrypt
+, pydot
+, python-Levenshtein
+, simplejson
+, html2text
+, psycopg2
 , withPostgresql ? true
 }:
 
 with stdenv.lib;
 
-python3Packages.buildPythonApplication rec {
+buildPythonApplication rec {
   pname = "trytond";
   version = "5.6.2";
-  src = python3Packages.fetchPypi {
+  src = fetchPypi {
     inherit pname version;
     sha256 = "0mlfl34zmmqrwip39mvhkk0h6dsljqwff2mk1ldahm253d4vzflp";
   };
@@ -16,10 +33,10 @@ python3Packages.buildPythonApplication rec {
   # Tells the tests which database to use
   DB_NAME = ":memory:";
 
-  buildInputs = with python3Packages; [
+  buildInputs = [
     mock
   ];
-  propagatedBuildInputs = with python3Packages; [
+  propagatedBuildInputs = [
     lxml
     relatorio
     genshi
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 14aed9d373b..8ca9361eb11 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -7193,7 +7193,7 @@ in
 
   tryton = callPackage ../applications/office/tryton { };
 
-  trytond = callPackage ../applications/office/trytond { };
+  trytond = with python3Packages; toPythonApplication trytond;
 
   omapd = callPackage ../tools/security/omapd { };
 
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 0a3cbae305c..4293d8e0eae 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -6056,6 +6056,8 @@ in {
 
   tqdm = callPackage ../development/python-modules/tqdm { };
 
+  trytond = callPackage ../development/python-modules/trytond { };
+
   smmap = callPackage ../development/python-modules/smmap { };
 
   smmap2 = throw "smmap2 has been deprecated, use smmap instead."; # added 2020-03-14