diff --git a/patrole_tempest_plugin/hacking/checks.py b/patrole_tempest_plugin/hacking/checks.py
index d7b772d..48ef269 100644
--- a/patrole_tempest_plugin/hacking/checks.py
+++ b/patrole_tempest_plugin/hacking/checks.py
@@ -17,6 +17,7 @@
 import os
 import re
 
+from hacking import core
 import pycodestyle
 
 
@@ -27,7 +28,6 @@
 TEST_DEFINITION = re.compile(r'^\s*def test.*')
 SETUP_TEARDOWN_CLASS_DEFINITION = re.compile(r'^\s+def (setUp|tearDown)Class')
 SCENARIO_DECORATOR = re.compile(r'\s*@.*services\((.*)\)')
-VI_HEADER_RE = re.compile(r"^#\s+vim?:.+")
 RAND_NAME_HYPHEN_RE = re.compile(r".*rand_name\(.+[\-\_][\"\']\)")
 MUTABLE_DEFAULT_ARGS = re.compile(r"^\s*def .+\((.+=\{\}|.+=\[\])")
 TESTTOOLS_SKIP_DECORATOR = re.compile(r'\s*@testtools\.skip\((.*)\)')
@@ -42,6 +42,7 @@
 have_rbac_decorator = False
 
 
+@core.flake8ext
 def import_no_clients_in_api_tests(physical_line, filename):
     """Check for client imports from patrole_tempest_plugin/tests/api
 
@@ -56,6 +57,7 @@
                      "patrole_tempest_plugin/tests/scenario/* tests"))
 
 
+@core.flake8ext
 def no_setup_teardown_class_for_tests(physical_line, filename):
     """Check that tests do not use setUpClass/tearDownClass
 
@@ -69,20 +71,7 @@
                 "T105: (setUp|tearDown)Class can not be used in tests")
 
 
-def no_vi_headers(physical_line, line_number, lines):
-    """Check for vi editor configuration in source files.
-
-    By default vi modelines can only appear in the first or
-    last 5 lines of a source file.
-
-    T106
-    """
-    # NOTE(gilliard): line_number is 1-indexed
-    if line_number <= 5 or line_number > len(lines) - 5:
-        if VI_HEADER_RE.match(physical_line):
-            return 0, "T106: Don't put vi configuration in source files"
-
-
+@core.flake8ext
 def service_tags_not_in_module_path(physical_line, filename):
     """Check that a service tag isn't in the module path
 
@@ -102,6 +91,7 @@
                         "T107: service tag should not be in path")
 
 
+@core.flake8ext
 def no_hyphen_at_end_of_rand_name(logical_line, filename):
     """Check no hyphen at the end of rand_name() argument
 
@@ -112,6 +102,7 @@
         return 0, msg
 
 
+@core.flake8ext
 def no_mutable_default_args(logical_line):
     """Check that mutable object isn't used as default argument
 
@@ -122,6 +113,7 @@
         yield (0, msg)
 
 
+@core.flake8ext
 def no_testtools_skip_decorator(logical_line):
     """Check that methods do not have the testtools.skip decorator
 
@@ -132,6 +124,7 @@
                "decorators.skip_because from tempest.lib")
 
 
+@core.flake8ext
 def use_rand_uuid_instead_of_uuid4(logical_line, filename):
     """Check that tests use data_utils.rand_uuid() instead of uuid.uuid4()
 
@@ -145,6 +138,7 @@
     yield (0, msg)
 
 
+@core.flake8ext
 def no_rbac_rule_validation_decorator(physical_line, filename):
     """Check that each test has the ``rbac_rule_validation.action`` decorator.
 
@@ -174,6 +168,7 @@
             have_rbac_decorator = False
 
 
+@core.flake8ext
 def no_rbac_suffix_in_test_filename(filename):
     """Check that RBAC filenames end with "_rbac" suffix.
 
@@ -188,6 +183,7 @@
             return 0, "RBAC test filenames must end in _rbac suffix"
 
 
+@core.flake8ext
 def no_rbac_test_suffix_in_test_class_name(physical_line, filename):
     """Check that RBAC class names end with "RbacTest"
 
@@ -203,6 +199,7 @@
                 return 0, "RBAC test class names must end in 'RbacTest'"
 
 
+@core.flake8ext
 def no_client_alias_in_test_cases(logical_line, filename):
     """Check that test cases don't use "self.client" to define a client.
 
@@ -213,6 +210,7 @@
             return 0, "Do not use 'self.client' as a service client alias"
 
 
+@core.flake8ext
 def no_extension_rbac_test_suffix_in_plugin_test_class_name(physical_line,
                                                             filename):
     """Check that Extension RBAC class names end with "ExtRbacTest"
@@ -249,18 +247,3 @@
                     error = ("Plugin RBAC test subclasses must inherit from a "
                              "'ExtRbacTest' base class")
                     return len(superclass) - 1, error
-
-
-def factory(register):
-    register(import_no_clients_in_api_tests)
-    register(no_setup_teardown_class_for_tests)
-    register(no_vi_headers)
-    register(no_hyphen_at_end_of_rand_name)
-    register(no_mutable_default_args)
-    register(no_testtools_skip_decorator)
-    register(use_rand_uuid_instead_of_uuid4)
-    register(service_tags_not_in_module_path)
-    register(no_rbac_rule_validation_decorator)
-    register(no_rbac_suffix_in_test_filename)
-    register(no_rbac_test_suffix_in_test_class_name)
-    register(no_extension_rbac_test_suffix_in_plugin_test_class_name)
diff --git a/patrole_tempest_plugin/tests/unit/test_hacking.py b/patrole_tempest_plugin/tests/unit/test_hacking.py
index a0ace76..edfaa7e 100644
--- a/patrole_tempest_plugin/tests/unit/test_hacking.py
+++ b/patrole_tempest_plugin/tests/unit/test_hacking.py
@@ -62,12 +62,6 @@
             "  def tearDownClass(cls):",
             "./patrole_tempest_plugin/tests/scenario/fake_test.py"))
 
-    def test_no_vi_headers(self):
-        self.assertTrue(checks.no_vi_headers(
-            "# vim: tabstop=4", 1, range(250)))
-        self.assertTrue(checks.no_vi_headers(
-            "# vim: tabstop=4", 249, range(250)))
-
     def test_service_tags_not_in_module_path(self):
         self.assertTrue(checks.service_tags_not_in_module_path(
             "@utils.services('volume')",
diff --git a/patrole_tempest_plugin/tests/unit/test_rbac_rule_validation.py b/patrole_tempest_plugin/tests/unit/test_rbac_rule_validation.py
index 05ad7b7..5c4efff 100644
--- a/patrole_tempest_plugin/tests/unit/test_rbac_rule_validation.py
+++ b/patrole_tempest_plugin/tests/unit/test_rbac_rule_validation.py
@@ -109,8 +109,8 @@
         def test_policy(*args):
             raise exceptions.Forbidden()
 
-        test_re = ("User with roles \['member'\] was not allowed to perform "
-                   "the following actions: \[%s\].*" % (mock.sentinel.action))
+        test_re = (r"User with roles \['member'\] was not allowed to perform "
+                   r"the following actions: \[%s\].*" % (mock.sentinel.action))
         self.assertRaisesRegex(
             rbac_exceptions.RbacUnderPermissionException, test_re, test_policy,
             self.test_obj)
@@ -164,8 +164,8 @@
             def test_policy(*args):
                 raise exception_cls(**kwargs)
 
-            test_re = (".*User with roles \[%s\] was not allowed to "
-                       "perform the following actions: \[%s\].*" % (
+            test_re = (r".*User with roles \[%s\] was not allowed to "
+                       r"perform the following actions: \[%s\].*" % (
                            ', '.join("'%s'" % r for r in self.test_roles),
                            mock.sentinel.action))
             self.assertRaisesRegex(
@@ -227,8 +227,8 @@
             raise exceptions.NotFound()
 
         expected_errors = [
-            ("User with roles \['member'\] was not allowed to perform the "
-             "following actions: \['%s'\].*" % policy_names[0]),
+            (r"User with roles \['member'\] was not allowed to perform the "
+             r"following actions: \['%s'\].*" % policy_names[0]),
             None
         ]
 
@@ -282,7 +282,7 @@
         for test_policy in (
             test_policy_expect_forbidden, test_policy_expect_not_found):
 
-            error_re = ".*OverPermission: .* \[%s\]$" % mock.sentinel.action
+            error_re = r".*OverPermission: .* \[%s\]$" % mock.sentinel.action
             self.assertRaisesRegex(rbac_exceptions.RbacOverPermissionException,
                                    error_re, test_policy, self.test_obj)
             self.assertRegex(mock_log.error.mock_calls[0][1][0], error_re)
@@ -380,8 +380,8 @@
         def test_policy(*args):
             raise exceptions.Forbidden()
 
-        test_re = ("User with roles \['member', 'anotherrole'\] was not "
-                   "allowed to perform the following actions: \[%s\].*" %
+        test_re = (r"User with roles \['member', 'anotherrole'\] was not "
+                   r"allowed to perform the following actions: \[%s\].*" %
                    (mock.sentinel.action))
         self.assertRaisesRegex(
             rbac_exceptions.RbacUnderPermissionException, test_re, test_policy,
@@ -409,8 +409,8 @@
             raise exceptions.NotFound()
 
         expected_errors = [
-            ("User with roles \['member', 'anotherrole'\] was not allowed to "
-             "perform the following actions: \['%s'\].*" % policy_names[0]),
+            (r"User with roles \['member', 'anotherrole'\] was not allowed to "
+             r"perform the following actions: \['%s'\].*" % policy_names[0]),
             None
         ]
 
@@ -657,7 +657,7 @@
             mock_authority.PolicyAuthority.return_value.allowed.side_effect = (
                 allowed_list)
 
-            error_re = ".*OverPermission: .* \[%s\]$" % fail_on_action
+            error_re = r".*OverPermission: .* \[%s\]$" % fail_on_action
             self.assertRaisesRegex(
                 rbac_exceptions.RbacOverPermissionException, error_re,
                 test_policy, self.test_obj)
@@ -727,7 +727,7 @@
         error_re = ("User with roles ['member'] was not allowed to perform "
                     "the following actions: %s. Expected allowed actions: %s. "
                     "Expected disallowed actions: []." %
-                    (rules, rules)).replace('[', '\[').replace(']', '\]')
+                    (rules, rules)).replace('[', r'\[').replace(']', r'\]')
         self.assertRaisesRegex(
             rbac_exceptions.RbacUnderPermissionException, error_re,
             test_policy, self.test_obj)
@@ -912,7 +912,7 @@
         error_re = ("User with roles ['member', 'anotherrole'] was not "
                     "allowed to perform the following actions: %s. Expected "
                     "allowed actions: %s. Expected disallowed actions: []." %
-                    (rules, rules)).replace('[', '\[').replace(']', '\]')
+                    (rules, rules)).replace('[', r'\[').replace(']', r'\]')
         self.assertRaisesRegex(
             rbac_exceptions.RbacUnderPermissionException, error_re,
             test_policy, self.test_obj)