Replace pylint+flake8 etc with ruff

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       matrix:
         os: [macos-latest, ubuntu-latest, windows-latest]
-        python-version: [3.9, '3.10', '3.11', '3.12']
+        python-version: ['3.9', '3.10', '3.11', '3.12']
 
     steps:
       - uses: actions/checkout@v4
@@ -40,9 +40,5 @@ jobs:
           python-version: '3.11'
       - name: Install nox
         run: pip install nox
-      - name: Run flake8
-        run: nox -s flake8
-      - name: Run pylint
-        run: nox -s pylint
-      - name: Run pydocstyle
-        run: nox -s pydocstyle
+      - name: Run Ruff
+        run: nox -s ruff

noxfile.py

@@ -3,7 +3,7 @@
 
 nox.options.error_on_external_run = True
 nox.options.reuse_existing_virtualenvs = True
-nox.options.sessions = ['coverage', 'docs', 'flake8', 'pylint', 'pydocstyle']
+nox.options.sessions = ['coverage', 'docs', 'ruff']
 
 
 @nox.session()
@@ -15,19 +15,9 @@ def coverage(session):
     )
 
 @nox.session()
-def flake8(session):
-    session.install('-e', '.[dev]')
-    session.run('flake8', 's2cell', 'tests', *session.posargs)
-
-@nox.session()
-def pylint(session):
-    session.install('-e', '.[dev]')
-    session.run('pylint', 's2cell', *session.posargs)
-
-@nox.session()
-def pydocstyle(session):
-    session.install('-e', '.[dev]')
-    session.run('pydocstyle', 's2cell', *session.posargs)
+def ruff(session):
+    session.install('.[dev]')
+    session.run('ruff', 'check', 's2cell', 'tests', *session.posargs)
 
 @nox.session()
 def test(session):