ci: Set linting according to discussion

.github/workflows/main.yml

@@ -72,33 +72,17 @@ jobs:
 
   lint:
     runs-on: ubuntu-latest
-    container:
-      image: ubuntu:24.04
     name: Lint
 
     steps:
-      - name: Install base tooling
-        run: |
-          apt-get update
-          apt-get install -y --no-install-recommends git python3 python3-venv python3-pip
-
-      - name: Create Python virtual environment
-        run: |
-          python3 -m venv /opt/venv
-          /opt/venv/bin/pip install --no-cache-dir --upgrade pip
-
       - name: Check out source code
         uses: actions/checkout@v4
-        with:
-          fetch-depth: 32  # This is necessary to get the commits
 
-      - name: Install linting dependencies
-        run: |
-          /opt/venv/bin/pip install --no-cache-dir ruff
+      - name: Install ruff
+        run: pip install ruff
 
-      - name: Run ruff format check (line-length policy)
-        run: /opt/venv/bin/ruff format --check --diff --line-length 110 api tests
+      - name: Ruff lint
+        run: ruff check .
 
-      - name: Run ruff lint check (E/W/F/I + complexity policy)
-        run: |
-          /opt/venv/bin/ruff check --line-length 110 --select E,W,F,I,C901 --ignore E203 api tests
+      - name: Ruff format
+        run: ruff format --check --diff .

.pre-commit-config.yaml

@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+repos:
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.11.5
+    hooks:
+      - id: ruff
+        args: [--fix, --exit-non-zero-on-fix]
+      - id: ruff-format

api/main.py

@@ -1703,9 +1703,19 @@ async def patch_node(
 
     # State transition checks
     if new_state is not None:
+<<<<<<< HEAD
         is_valid, message = specialized_node.validate_node_state_transition(new_state)
         if not is_valid:
             raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=message)
+=======
+        is_valid, message = specialized_node.validate_node_state_transition(
+            new_state
+        )
+        if not is_valid:
+            raise HTTPException(
+                status_code=status.HTTP_400_BAD_REQUEST, detail=message
+            )
+>>>>>>> 7df261e (api: Implement PATCH endpoint for node)
         if new_state != new_node_def.state:
             new_node_def.processed_by_kcidb_bridge = False
         new_node_def.state = new_state

docker/api/requirements-dev.txt

@@ -1,3 +1,3 @@
 -r requirements-tests.txt
-pycodestyle==2.8.0
-pylint==4.0.4
+ruff>=0.9.0
+pre-commit>=4.0.0

pyproject.toml

@@ -46,8 +46,8 @@ tests = [
 ]
 dev = [
   "kernelci-api[tests]",
-  "pycodestyle == 2.8.0",
-  "pylint == 4.0.4",
+  "ruff >= 0.9.0",
+  "pre-commit >= 4.0.0",
 ]
 
 [project.urls]
@@ -64,3 +64,21 @@ scripts = ["*"]
 "api.static.css" = ["*.css"]
 "api.static.js" = ["*.js"]
 migrations = ["*.py"]
+
+# Ruff — used by CI and pre-commit hooks
+[tool.ruff]
+target-version = "py310"
+# Soft limit for formatter wrapping
+line-length = 80
+
+[tool.ruff.lint]
+# Ruff defaults (E, F, W) plus import sorting and complexity checking
+select = ["E", "F", "W", "I", "C901"]
+
+[tool.ruff.lint.pycodestyle]
+# Hard limit — lines beyond this are errors regardless of formatter
+max-line-length = 110
+
+[tool.ruff.lint.per-file-ignores]
+# Legacy high-complexity entrypoint, to be refactored incrementally
+"api/main.py" = ["C901"]

tests/e2e_tests/test_pipeline.py

@@ -10,7 +10,7 @@
 from cloudevents.http import from_json
 
 from .listen_handler import create_listen_task
-from .test_node_handler import create_node, get_node_by_id, update_node
+from .test_node_handler import create_node, get_node_by_id, patch_node, update_node
 
 
 @pytest.mark.dependency(