Migrate to ruff

As #360 shows, black and reorder-python-imports conflict on how they format imports.

Switch over to `ruff` + its builtin import sorter (isort).

.pre-commit-config.yaml

@@ -10,20 +10,13 @@ exclude: |
 default_language_version:
     python: python3.10
 repos:
--   repo: https://github.com/asottile/reorder-python-imports
-    rev: v3.12.0
+-   repo: https://github.com/astral-sh/ruff-pre-commit
+    # Ruff version.
+    rev: v0.9.4
     hooks:
-    -   id: reorder-python-imports
-        args:
-            - --application-directories=.:src
--   repo: https://github.com/psf/black
-    rev: 23.12.1
-    hooks:
-    -   id: black
-        args:
-            - --safe
-            - --quiet
-        language_version: python3
+    -   id: ruff
+        args: [--fix]
+    -   id: ruff-format
 -   repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v4.5.0
     hooks:

pyproject.toml

@@ -4,3 +4,30 @@ requires = [
   "wheel",
 ]
 build-backend = "setuptools.build_meta"
+
+[tool.ruff]
+target-version = "py310"
+src = [
+    "src",
+    "tests",
+]
+format.docstring-code-format = true
+lint.select = ['E4', 'E7', 'E9', 'F', 'I']
+lint.ignore = [
+    "E402",
+    "E711",
+    "E712",
+    "E721",
+    "E722",
+    "E731",
+    "E741",
+    "F401",
+    "F403",
+    "F405",
+    "F507",
+    "F601",
+    "F722",
+    "F811",
+    "F821",
+    "F841",
+]