diff --git a/rhodecode/config/environment.py b/rhodecode/config/environment.py
--- a/rhodecode/config/environment.py
+++ b/rhodecode/config/environment.py
@@ -25,13 +25,8 @@ Pylons environment configuration
 import os
 import logging
 import rhodecode
-import platform
-import re
-import io
 
 from mako.lookup import TemplateLookup
-from pylons.configuration import PylonsConfig
-from pylons.error import handle_mako_error
 from pyramid.settings import asbool
 
 # ------------------------------------------------------------------------------
@@ -46,25 +41,25 @@ import rhodecode.integrations           
 from rhodecode.lib import app_globals
 from rhodecode.config import utils
 from rhodecode.config.routing import make_map
-from rhodecode.config.jsroutes import generate_jsroutes_content
 
 from rhodecode.lib import helpers
-from rhodecode.lib.auth import set_available_permissions
 from rhodecode.lib.utils import (
-    repo2db_mapper, make_db_config, set_rhodecode_config,
-    load_rcextensions)
+    make_db_config, set_rhodecode_config, load_rcextensions)
 from rhodecode.lib.utils2 import str2bool, aslist
 from rhodecode.lib.vcs import connect_vcs, start_vcs_server
-from rhodecode.model.scm import ScmModel
 
 log = logging.getLogger(__name__)
 
+
 def load_environment(global_conf, app_conf, initial=False,
                      test_env=None, test_index=None):
     """
     Configure the Pylons environment via the ``pylons.config``
     object
     """
+    from pylons.configuration import PylonsConfig
+    from pylons.error import handle_mako_error
+
     config = PylonsConfig()
 
 
diff --git a/rhodecode/config/middleware.py b/rhodecode/config/middleware.py
--- a/rhodecode/config/middleware.py
+++ b/rhodecode/config/middleware.py
@@ -23,11 +23,10 @@ Pylons middleware initialization
 """
 import logging
 import traceback
-from collections import OrderedDict
+import collections
 
 from paste.registry import RegistryManager
 from paste.gzipper import make_gzip_middleware
-from pylons.wsgiapp import PylonsApp
 from pyramid.authorization import ACLAuthorizationPolicy
 from pyramid.config import Configurator
 from pyramid.settings import asbool, aslist
@@ -101,6 +100,8 @@ def make_app(global_conf, static_files=T
         defaults to main).
 
     """
+    from pylons.wsgiapp import PylonsApp
+
     # Apply compatibility patches
     patches.kombu_1_5_1_python_2_7_11()
     patches.inspect_getargspec()
@@ -267,7 +268,7 @@ def includeme(config):
     settings = config.registry.settings
 
     # plugin information
-    config.registry.rhodecode_plugins = OrderedDict()
+    config.registry.rhodecode_plugins = collections.OrderedDict()
 
     config.add_directive(
         'register_rhodecode_plugin', register_rhodecode_plugin)