diff --git a/odoo/addons/base/models/ir_module.py b/odoo/addons/base/models/ir_module.py
index 2408e2225e9..6d078212142 100644
--- a/odoo/addons/base/models/ir_module.py
+++ b/odoo/addons/base/models/ir_module.py
@@ -4,11 +4,9 @@ import base64
 from collections import defaultdict, OrderedDict
 from decorator import decorator
 from operator import attrgetter
-import importlib
 import io
 import logging
 import os
-import pkg_resources
 import shutil
 import tempfile
 import threading
@@ -318,44 +316,11 @@ class Module(models.Model):
         """ Domain to retrieve the modules that should be loaded by the registry. """
         return [('state', '=', 'installed')]
 
-    @staticmethod
-    def _check_python_external_dependency(pydep):
-        try:
-            pkg_resources.get_distribution(pydep)
-        except pkg_resources.DistributionNotFound as e:
-            try:
-                importlib.import_module(pydep)
-                _logger.info("python external dependency on '%s' does not appear to be a valid PyPI package. Using a PyPI package name is recommended.", pydep)
-            except ImportError:
-                # backward compatibility attempt failed
-                _logger.warning("DistributionNotFound: %s", e)
-                raise Exception('Python library not installed: %s' % (pydep,))
-        except pkg_resources.VersionConflict as e:
-            _logger.warning("VersionConflict: %s", e)
-            raise Exception('Python library version conflict: %s' % (pydep,))
-        except Exception as e:
-            _logger.warning("get_distribution(%s) failed: %s", pydep, e)
-            raise Exception('Error finding python library %s' % (pydep,))
-
-    @staticmethod
-    def _check_external_dependencies(terp):
-        depends = terp.get('external_dependencies')
-        if not depends:
-            return
-        for pydep in depends.get('python', []):
-            Module._check_python_external_dependency(pydep)
-
-        for binary in depends.get('bin', []):
-            try:
-                tools.find_in_path(binary)
-            except IOError:
-                raise Exception('Unable to find %r in path' % (binary,))
-
     @classmethod
     def check_external_dependencies(cls, module_name, newstate='to install'):
         terp = cls.get_module_info(module_name)
         try:
-            cls._check_external_dependencies(terp)
+            modules.check_manifest_dependencies(terp)
         except Exception as e:
             if newstate == 'to install':
                 msg = _('Unable to install module "%s" because an external dependency is not met: %s')
diff --git a/odoo/modules/__init__.py b/odoo/modules/__init__.py
index 8b939af8f93..8a449a2c00a 100644
--- a/odoo/modules/__init__.py
+++ b/odoo/modules/__init__.py
@@ -11,6 +11,7 @@ from odoo.modules.loading import load_modules, reset_modules_state
 
 from odoo.modules.module import (
     adapt_version,
+    check_manifest_dependencies,
     get_module_path,
     get_module_resource,
     get_modules,
diff --git a/odoo/modules/module.py b/odoo/modules/module.py
index 582330e685d..cec3ada8002 100644
--- a/odoo/modules/module.py
+++ b/odoo/modules/module.py
@@ -450,3 +450,36 @@ def adapt_version(version):
 
 
 current_test = None
+
+
+def check_python_external_dependency(pydep):
+    try:
+        pkg_resources.get_distribution(pydep)
+    except pkg_resources.DistributionNotFound as e:
+        try:
+            importlib.import_module(pydep)
+            _logger.info("python external dependency on '%s' does not appear to be a valid PyPI package. Using a PyPI package name is recommended.", pydep)
+        except ImportError:
+            # backward compatibility attempt failed
+            _logger.warning("DistributionNotFound: %s", e)
+            raise Exception('Python library not installed: %s' % (pydep,))
+    except pkg_resources.VersionConflict as e:
+        _logger.warning("VersionConflict: %s", e)
+        raise Exception('Python library version conflict: %s' % (pydep,))
+    except Exception as e:
+        _logger.warning("get_distribution(%s) failed: %s", pydep, e)
+        raise Exception('Error finding python library %s' % (pydep,))
+
+
+def check_manifest_dependencies(manifest):
+    depends = manifest.get('external_dependencies')
+    if not depends:
+        return
+    for pydep in depends.get('python', []):
+        check_python_external_dependency(pydep)
+
+    for binary in depends.get('bin', []):
+        try:
+            tools.find_in_path(binary)
+        except IOError:
+            raise Exception('Unable to find %r in path' % (binary,))