Introduce pre-commit config for flake8 (#1338)

Author: ulgens

.github/workflows/lint.yml

@@ -16,7 +16,7 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install tox
-    - name: Run lint 💅
+    - name: Run pre-commit 💅
       run: tox
       env:
-        TOXENV: flake8
+        TOXENV: pre-commit

.pre-commit-config.yaml

@@ -0,0 +1,8 @@
+default_language_version:
+  python: python3.8
+repos:
+-   repo: https://github.com/PyCQA/flake8
+    rev: 5.0.4
+    hooks:
+    -   id: flake8
+        additional_dependencies: [flake8-bugbear==22.7.1]

setup.py

@@ -27,9 +27,9 @@
 
 dev_requires = [
     "black==19.10b0",
-    "flake8==3.7.9",
-    "flake8-black==0.1.1",
-    "flake8-bugbear==20.1.4",
+    "flake8>=5,<6",
+    "flake8-black==0.3.3",
+    "flake8-bugbear==22.7.1",
 ] + tests_require
 
 setup(

tox.ini

@@ -45,8 +45,8 @@ deps = -e.[dev]
 commands  =
     black --exclude "/migrations/" graphene_django examples setup.py --check
 
-[testenv:flake8]
-basepython = python3.8
-deps = -e.[dev]
+[testenv:pre-commit]
+skip_install = true
+deps = pre-commit
 commands =
-    flake8 graphene_django examples setup.py
+    pre-commit run --all-files --show-diff-on-failure