Migrate to official pycqa/flake8 hooks repo

Committed via https://github.com/asottile/all-repos

.pre-commit-config.yaml

@@ -1,6 +1,6 @@
 repos:
 -   repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v2.0.0
+    rev: v2.1.0
     hooks:
     -   id: trailing-whitespace
     -   id: end-of-file-fixer
@@ -10,21 +10,24 @@ repos:
     -   id: debug-statements
     -   id: name-tests-test
     -   id: requirements-txt-fixer
+-   repo: https://gitlab.com/pycqa/flake8
+    rev: 3.7.1
+    hooks:
     -   id: flake8
 -   repo: https://github.com/pre-commit/mirrors-autopep8
-    rev: v1.4
+    rev: v1.4.3
     hooks:
     -   id: autopep8
 -   repo: https://github.com/pre-commit/pre-commit
-    rev: v1.11.2
+    rev: v1.14.2
     hooks:
     -   id: validate_manifest
 -   repo: https://github.com/asottile/pyupgrade
-    rev: v1.11.0
+    rev: v1.11.1
     hooks:
     -   id: pyupgrade
 -   repo: https://github.com/asottile/reorder_python_imports
-    rev: v1.3.0
+    rev: v1.3.5
     hooks:
     -   id: reorder-python-imports
         language_version: python3

pre_commit/xargs.py

@@ -58,8 +58,8 @@ def partition(cmd, varargs, target_concurrency, _max_length=None):
 
         arg_length = _command_length(arg) + 1
         if (
-                total_length + arg_length <= _max_length
-                and len(ret_cmd) < max_args
+                total_length + arg_length <= _max_length and
+                len(ret_cmd) < max_args
         ):
             ret_cmd.append(arg)
             total_length += arg_length

tests/conftest.py

@@ -29,9 +29,9 @@ def no_warnings(recwarn):
         message = str(warning.message)
         # ImportWarning: Not importing directory '...' missing __init__(.py)
         if not (
-            isinstance(warning.message, ImportWarning)
-            and message.startswith('Not importing directory ')
-            and ' missing __init__' in message
+            isinstance(warning.message, ImportWarning) and
+            message.startswith('Not importing directory ') and
+            ' missing __init__' in message
         ):
             warnings.append('{}:{} {}'.format(
                 warning.filename,