Adopt ruff and address lint

.github/actions/check-links/check_links.py

@@ -69,7 +69,7 @@ def check_links(ignore_glob, ignore_links, links_expire):
                     log(e.output.decode("utf-8"))
                     fails += 1
                     if fails == 3:
-                        raise RuntimeError("Found three failed links, bailing")
+                        raise RuntimeError("Found three failed links, bailing") from e
     if fails:
         raise RuntimeError(f"Encountered failures in {fails} file(s)")
 

.github/dependabot.yml

@@ -1,8 +1,10 @@
 version: 2
 updates:
-  # Set update schedule for GitHub Actions
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
-      # Check for updates to GitHub Actions every week
+      interval: "weekly"
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
       interval: "weekly"

.github/workflows/tests.yml

@@ -55,12 +55,17 @@ jobs:
           python --version | grep "3.11"
           hatch run check_pre
 
-  pre_commit:
+  test_lint:
+    name: Test Lint
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: ./.github/actions/base-setup
-      - uses: ./.github/actions/pre-commit
+      - uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
+      -  name: Run Linters
+         run: |
+          hatch run typing:test
+          hatch run lint:style
+          pipx run 'validate-pyproject[all]' pyproject.toml
 
   check_links:
     runs-on: ubuntu-latest
@@ -277,7 +282,7 @@ jobs:
     if: always()
     needs:
       - base_setup
-      - pre_commit
+      - test_lint
       - check_links
       - binder_link
       - pr_script

.pre-commit-config.yaml

@@ -1,5 +1,5 @@
 ci:
-  skip: [check-jsonschema]
+  autoupdate_schedule: monthly
 
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
@@ -18,43 +18,23 @@ repos:
       - id: check-builtin-literals
       - id: trailing-whitespace
 
-  - repo: https://github.com/psf/black
-    rev: 22.10.0
-    hooks:
-      - id: black
-        args: ["--line-length", "100"]
-
-  - repo: https://github.com/PyCQA/isort
-    rev: 5.10.1
-    hooks:
-      - id: isort
-        files: \.py$
-        args: [--profile=black]
-
-  - repo: https://github.com/abravalheri/validate-pyproject
-    rev: v0.10.1
+  - repo: https://github.com/python-jsonschema/check-jsonschema
+    rev: 0.19.2
     hooks:
-      - id: validate-pyproject
-        stages: [manual]
+      - id: check-github-workflows
 
   - repo: https://github.com/executablebooks/mdformat
     rev: 0.7.16
     hooks:
       - id: mdformat
 
-  - repo: https://github.com/john-hen/Flake8-pyproject
-    rev: 1.2.2
+  - repo: https://github.com/psf/black
+    rev: 22.10.0
     hooks:
-      - id: Flake8-pyproject
-        alias: flake8
-        additional_dependencies:
-          ["flake8-bugbear==22.6.22", "flake8-implicit-str-concat==0.2.0"]
+      - id: black
 
-  - repo: https://github.com/sirosen/check-jsonschema
-    rev: 0.19.2
+  - repo: https://github.com/charliermarsh/ruff-pre-commit
+    rev: v0.0.165
     hooks:
-      - id: check-jsonschema
-        name: "Check GitHub Workflows"
-        files: ^\.github/workflows/
-        types: [yaml]
-        args: ["--schemafile", "https://json.schemastore.org/github-workflow"]
+      - id: ruff
+        args: ["--fix"]

pyproject.toml

@@ -8,10 +8,14 @@ authors = [{name = "Sir Robin", email = "robin@camelot.uk"}]
 dynamic = ["description", "version"]
 readme = "README.md"
 dependencies = ["jupyter_core>=4.12,!=5.0.*"]
-optional-dependencies.test = ["pytest"]
+
+[project.optional-dependencies]
+test = ["pytest>=7.0"]
+lint = ["black>=22.6.0", "mdformat>0.7", "ruff>=0.0.156"]
+typing = ["mypy>=0.990"]
 
 [tool.jupyter-releaser]
-skip = ["check-links", "publish-assets"]
+skip = ["publish-assets"]
 hooks.after-populate-release = ["bash ./.github/scripts/bump_tag.sh"]
 
 [tool.hatch.version]
@@ -21,26 +25,97 @@ source = "nodejs"
 check_minimum = "python -c 'from jupyter_core import __version__; assert __version__ == \"4.12.0\"'"
 check_pre = "python -c 'import os; assert os.environ[\"PIP_PRE\"] == \"1\"'"
 
+[tool.hatch.envs.typing]
+features = ["typing"]
+dependencies = ["mypy>=0.990"]
+[tool.hatch.envs.typing.scripts]
+test = "mypy --install-types --non-interactive {args:.}"
+
+[tool.hatch.envs.lint]
+features = ["lint"]
+[tool.hatch.envs.lint.scripts]
+style = [
+  "ruff {args:.}",
+  "black --check --diff {args:.}",
+  "mdformat --check {args:*.md}"
+]
+fmt = [
+  "black {args:.}",
+  "ruff --fix {args:.}",
+  "mdformat {args:*.md}"
+]
+
 [tool.pytest.ini_options]
 testpaths = ["foobar.py"]
 
-[tool.flake8]
-ignore = "E501, W503, E402"
-builtins = "c, get_config"
-exclude = [
-    ".cache",
-    ".github",
-    "docs",
-    "setup.py",
+[tool.mypy]
+check_untyped_defs = true
+disallow_any_generics = true
+disallow_incomplete_defs = true
+disallow_untyped_decorators = true
+explicit_package_bases = true
+namespace_packages = true
+no_implicit_optional = true
+no_implicit_reexport = true
+pretty = true
+show_error_context = true
+show_error_codes = true
+strict_equality = true
+strict_optional = true
+warn_unused_configs = true
+warn_redundant_casts = true
+warn_return_any = true
+warn_unused_ignores = true
+
+[tool.black]
+line-length = 100
+skip-string-normalization = true
+target-version = ["py37"]
+
+[tool.ruff]
+target-version = "py37"
+line-length = 100
+select = [
+  "A", "B", "C", "E", "F", "FBT", "I", "N", "Q", "RUF", "S", "T",
+  "UP", "W", "YTT",
 ]
-enable-extensions = "G"
-extend-ignore = [
-    "G001", "G002", "G004", "G200", "G201", "G202",
-    # black adds spaces around ':'
-    "E203",
+ignore = [
+  # Allow non-abstract empty methods in abstract base classes
+  "B027",
+  # Ignore McCabe complexity
+  "C901",
+  # Allow boolean positional values in function calls, like `dict.get(... True)`
+  "FBT003",
+  # Use of `assert` detected
+  "S101",
+  # Line too long
+  "E501",
+  # Relative imports are banned
+  "I252",
+  # Boolean ... in function definition
+  "FBT001", "FBT002",
+  # Module level import not at top of file
+  "E402",
+  # A001/A002/A003 .. is shadowing a python builtin
+  "A001", "A002", "A003",
+  # Possible hardcoded password
+  "S105", "S106",
+  # Q000 Single quotes found but double quotes preferred
+  "Q000",
+  # N806 Variable `B` in function should be lowercase
+  "N806",
+  # T201 `print` found
+  "T201",
+  # N802 Function name `CreateWellKnownSid` should be lowercase
+  "N802", "N803",
+  # C408 Unnecessary `dict` call (rewrite as a literal)
+  "C408",
+  # N801 Class name `directional_link` should use CapWords convention
+  "N801",
 ]
-per-file-ignores = [
-    # B011: Do not call assert False since python -O removes these calls
-    # F841 local variable 'foo' is assigned to but never used
-    "tests/*: B011", "F841",
+unfixable = [
+  # Don't touch print statements
+  "T201",
+  # Don't touch noqa lines
+  "RUF100",
 ]