CI requested changes:

* `py37` has no `flake8 v6`
* `flake8.options.manager.OptionManager` seems to require a `formatter_names` `kwarg`
  PyCQA/flake8@48b2919 etc
  seem to indicate that `[]` is what we need, "since we are not a formatter library"
  (Documentation https://flake8.pycqa.org/en/latest/internal/option_handling.html seems non-existent)

Signed-off-by: Stavros Ntentos <133706+stdedos@users.noreply.github.com>

run_tests.py

@@ -72,10 +72,17 @@ def load_tests(lines):
 
 def parse_options(checker, options):
     """Parse the CLI-style flags from `options` and expose to `checker`"""
+    extra_kwargs = {}
+    if int(flake8.__version__.split('.')) >= 6:
+        extra_kwargs = {
+            "formatter_names": []
+        }
+
     options_manager = OptionManager(
         version=flake8.__version__,
         plugin_versions=f"naming: {pep8ext_naming.__version__}",
         parents=[],
+        **extra_kwargs,
     )
     options_manager.add_option('--select', default=[])
     options_manager.add_option('--extended-default-select', default=['N'])

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py37-flake8{5,6},
+    py37-flake86,
     py38-flake8{5,6},
     py39-flake8{5,6},
     py310-flake8{5,6},