Switch to ruff for linting

Ruff is a newer linter which re-implements flake8 (plus a few of its
plugins), isort and pyupgrade into one single codebase. It's stupid
fast, and after some testing is proving to be quite reliable.

.pre-commit-config.yaml

@@ -8,27 +8,10 @@ repos:
       - id: check-toml
       - id: check-added-large-files
       - id: debug-statements
-  - repo: https://github.com/pycqa/isort
-    rev: 5.10.1
-    hooks:
-      - id: isort
-        name: isort (python)
   - repo: https://github.com/psf/black
-    rev: "22.10.0"
+    rev: "22.12.0"
     hooks:
       - id: black
-  - repo: https://github.com/PyCQA/flake8
-    rev: "6.0.0" # pick a git hash / tag to point to
-    hooks:
-      - id: flake8
-        additional_dependencies:
-          - flake8-comprehensions
-          - flake8-bugbear
-  - repo: https://github.com/asottile/pyupgrade
-    rev: v3.2.2
-    hooks:
-    -   id: pyupgrade
-        args: [--py38-plus]
   - repo: https://github.com/pre-commit/mirrors-mypy
     rev: "v0.991"
     hooks:
@@ -39,3 +22,8 @@ repos:
           - types-freezegun
           - types-pytz
           - types-python-dateutil
+  - repo: https://github.com/charliermarsh/ruff-pre-commit
+    rev: 'v0.0.224'
+    hooks:
+      - id: ruff
+        args: ["--force-exclude"]

pyproject.toml

@@ -1,3 +1,29 @@
+[tool.ruff]
+exclude = [
+    ".tox",
+    "build",
+    ".eggs",
+]
+select = [
+    "E",
+    "F",
+    "W",
+    "B",
+    "I",
+    "UP",
+    # "N",
+    # "ANN",
+    # "A",
+    "C4",
+    # "PT",
+    # "SIM",
+    "TID",
+]
+target-version = "py38"
+
+[tool.ruff.isort]
+force-single-line = true
+
 [build-system]
 requires = ["setuptools>=45", "wheel", "setuptools_scm>=6.2"]
 

requirements-dev.txt

@@ -1,7 +1,6 @@
-flake8
-flake8-import-order
 freezegun
 hypothesis
 pytest
 pytest-cov
 pytest-runner
+ruff

setup.cfg

@@ -1,22 +1,10 @@
-[flake8]
-exclude=.tox,build,.eggs
-extend-ignore =
-  # Black-incompatible colon spacing.
-  E203,
-  # Line jump before binary operator.
-  W503,
-max-line-length = 88
-
 [aliases]
 test=pytest
 
 [tool:pytest]
 testpaths = tests
 addopts = --cov=todoman --cov-report=term-missing --color=yes --verbose
 
-[isort]
-force_single_line=true
-
 [mypy]
 ignore_missing_imports = True
 # See https://github.com/python/mypy/issues/7511: