Drop flake8, use pre-commit for workflows

.github/workflows/build.yml

@@ -54,27 +54,14 @@ jobs:
       run: |
         ./runtests.py
 
-  flake8:
+  pre-commit:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up Python
-      uses: actions/setup-python@v2
+    - uses: actions/checkout@v3
+    - uses: actions/setup-python@v3
       with:
-        python-version: '3.9'
-    - uses: actions/cache@v2
-      with:
-          path: ~/.cache/pip
-          key: ${{ runner.os }}-pip-${{ '3.9' }}-${{ hashFiles('requirements*.txt') }}
-    - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        pip install -e .
-        pip install -r requirements-dev.txt
-    - name: Lint with flake8
-      run: |
-        flake8 --version
-        flake8 .
+        python-version: "3.10"
+    - uses: pre-commit/action@v3.0.0
 
   check-manifest:
     runs-on: ubuntu-latest
@@ -92,7 +79,7 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install -e .
-        pip install -r requirements-dev.txt
+        pip install checkmanifest
     - name: check-manifest
       run: |
         check-manifest

requirements-dev.txt

@@ -1,2 +1,3 @@
-flake8==3.8.4
 check-manifest
+ruff
+black

setup.cfg

@@ -39,7 +39,3 @@ where = src
 [options.package_data]
 mailer =
     locale/*/LC_MESSAGES/*.*
-
-[flake8]
-max-line-length = 100
-exclude = src/mailer/migrations,build,.tox

tox.ini

@@ -18,15 +18,12 @@ basepython =
 
 commands =
     test: coverage run ./runtests.py
-    flake: flake8 --statistics --benchmark
     checkmanifest: check-manifest
-allowlist_externals = flake8
 deps =
     coverage
     -r requirements-test.txt
     -e .
-    flake8: -r requirements-dev.txt
-    checkmanifest: -r requirements-dev.txt
+    checkmanifest: checkmanifest
     django22: Django==2.2.19
     django30: Django==3.0.14
     django31: Django==3.1.12