ci!: Add ruff, replacing isort, black, flake8 and its plugins

See also:
- https://ruff.rs/
- https://beta.ruff.rs/
- https://github.com/charliermarsh/ruff

.github/workflows/tests.yml

@@ -23,15 +23,15 @@ jobs:
           cache: 'poetry'
 
       - name: Install dependencies
-        run: poetry install -E "docs test coverage lint format"
+        run: poetry install -E "docs test coverage lint"
 
       - name: Print python versions
         run: |
           python -V
           poetry run python -V
 
-      - name: Lint with flake8
-        run: poetry run flake8
+      - name: Lint with ruff
+        run: poetry run ruff .
 
       - name: Lint with mypy
         run: poetry run mypy .

Makefile

@@ -9,12 +9,6 @@ entr_warn:
 	@echo "See http://entrproject.org/                               "
 	@echo "----------------------------------------------------------"
 
-isort:
-	poetry run isort `${PY_FILES}`
-
-black:
-	poetry run black `${PY_FILES}`
-
 test:
 	poetry run py.test $(test)
 
@@ -48,11 +42,11 @@ start_docs:
 design_docs:
 	$(MAKE) -C docs design
 
-flake8:
-	poetry run flake8
+ruff:
+	poetry run ruff .
 
-watch_flake8:
-	if command -v entr > /dev/null; then ${PY_FILES} | entr -c $(MAKE) flake8; else $(MAKE) flake8 entr_warn; fi
+watch_ruff:
+	if command -v entr > /dev/null; then ${PY_FILES} | entr -c $(MAKE) ruff; else $(MAKE) ruff entr_warn; fi
 
 mypy:
 	poetry run mypy `${PY_FILES}`