[chore] catch styling bugs in the prs better.

.github/workflows/lint.yml

@@ -1,5 +1,6 @@
-name: Lints
+name: Styling and lints
 on: [push, pull_request]
+
 jobs:
   lint:
     name: Run lints
@@ -8,8 +9,8 @@ jobs:
       - uses: actions/checkout@v6
       - name: Run ruff
         uses: astral-sh/ruff-action@v3
-        src: >-
-          kernels
+        with:
+          src: kernels/src kernels/tests
 
   black:
     name: Run black check
@@ -24,28 +25,31 @@ jobs:
         with:
           python-version: 3.12
 
-      - name: Install black
-        run: uv pip install black
-
       - name: Check formatting
-        run: |
-          uv run black --check kernels
+        run: uv run --with black black --check kernels/src kernels/tests
 
-  validate-dependencies:
-    name: Validate python_depends.json
+  isort:
+    name: Run isort check
     runs-on: ubuntu-latest
+    env:
+      UV_PYTHON_PREFERENCE: only-managed
     steps:
       - uses: actions/checkout@v6
 
-      - name: Set up Python
-        uses: actions/setup-python@v6
+      - name: Install uv and set the python version
+        uses: astral-sh/setup-uv@v7
         with:
-          python-version: "3.12"
-
-      - name: Validate python_depends.json is up-to-date
-        run: |
-          python ( cd kernels && update_python_depends.py --validate ) || {
-            echo "Error: python_depends.json is out of date."
-            echo "Please run: python update_python_depends.py"
-            exit 1
-          }
+          python-version: 3.12
+
+      - name: Check import sorting
+        run: uv run --with isort isort --check-only --diff kernels/src kernels/tests
+
+  validate-dependencies:
+    name: Validate shared files between Rust crate and Python package
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+
+      - name: Check python_depends.json is in sync
+        run: cmp -s kernel-builder/src/python_dependencies.json kernels/src/kernels/python_depends.json
+

Makefile

@@ -1,4 +1,4 @@
-.PHONY: style
+.PHONY: style quality
 
 export check_dirs := kernels/src kernels/tests
 
@@ -11,3 +11,8 @@ style:
 	black ${check_dirs}
 	isort ${check_dirs}
 	ruff check ${check_dirs} --fix
+
+quality:
+	black --check ${check_dirs}
+	isort --check-only --diff ${check_dirs}
+	ruff check ${check_dirs}