Adopt Ruff and use stricter MyPy settings

.github/workflows/test.yml

@@ -71,7 +71,9 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        env: [flake8, mypy]
+        env:
+          - ruff
+          - mypy
 
     steps:
       - uses: actions/checkout@v3

.ruff.toml

@@ -0,0 +1,53 @@
+target-version = "py39"  # Pin Ruff to Python 3.9
+output-format = "full"
+line-length = 95
+
+[lint]
+preview = true
+select = [
+#    "ANN",   # flake8-annotations
+    "C4",    # flake8-comprehensions
+    "COM",   # flake8-commas
+    "B",     # flake8-bugbear
+    "DTZ",   # flake8-datetimez
+    "E",     # pycodestyle
+    "EM",    # flake8-errmsg
+    "EXE",   # flake8-executable
+    "F",     # pyflakes
+    "FA",    # flake8-future-annotations
+    "FLY",   # flynt
+    "FURB",  # refurb
+    "G",     # flake8-logging-format
+    "I",     # isort
+    "ICN",   # flake8-import-conventions
+    "INT",   # flake8-gettext
+    "LOG",   # flake8-logging
+    "PERF",  # perflint
+    "PGH",   # pygrep-hooks
+    "PIE",   # flake8-pie
+    "PT",    # flake8-pytest-style
+    "SIM",   # flake8-simplify
+    "SLOT",  # flake8-slots
+    "TCH",   # flake8-type-checking
+    "UP",    # pyupgrade
+    "W",     # pycodestyle
+    "YTT",   # flake8-2020
+]
+ignore = [
+    "E116",
+    "E241",
+    "E251",
+]
+
+[lint.per-file-ignores]
+"tests/*" = [
+    "ANN",  # tests don't need annotations
+]
+
+[lint.isort]
+forced-separate = [
+    "tests",
+]
+required-imports = [
+    "from __future__ import annotations",
+]

Makefile

@@ -47,7 +47,7 @@ clean-mypyfiles:
 
 .PHONY: style-check
 style-check:
-	@flake8
+	@ruff check
 
 .PHONY: type-check
 type-check:

pyproject.toml

@@ -47,9 +47,9 @@ test = [
     "pytest",
 ]
 lint = [
-    "flake8",
+    "ruff==0.5.5",
     "mypy",
-    "docutils-stubs",
+    "types-docutils",
 ]
 standalone = [
     "Sphinx>=5",
@@ -75,4 +75,34 @@ exclude = [
 ]
 
 [tool.mypy]
-ignore_missing_imports = true
+python_version = "3.9"
+packages = [
+    "sphinxcontrib",
+    "tests",
+]
+exclude = [
+    "tests/roots",
+]
+check_untyped_defs = true
+disallow_any_generics = true
+disallow_incomplete_defs = true
+disallow_subclassing_any = true
+disallow_untyped_calls = true
+disallow_untyped_decorators = true
+disallow_untyped_defs = true
+explicit_package_bases = true
+extra_checks = true
+no_implicit_reexport = true
+show_column_numbers = true
+show_error_context = true
+strict_optional = true
+warn_redundant_casts = true
+warn_unused_configs = true
+warn_unused_ignores = true
+enable_error_code = [
+    "type-arg",
+    "redundant-self",
+    "truthy-iterable",
+    "ignore-without-code",
+    "unused-awaitable",
+]

sphinxcontrib/applehelp/__init__.py

@@ -1,15 +1,16 @@
 """Build Apple help books."""
 
+from __future__ import annotations
+
 import plistlib
 import shlex
 import subprocess
-from os import environ
-from os import path
-from subprocess import CalledProcessError, PIPE, STDOUT
-from typing import Any
+from os import environ, path
+from pathlib import Path
+from subprocess import PIPE, STDOUT, CalledProcessError
+from typing import TYPE_CHECKING
 
 import sphinx
-from sphinx.application import Sphinx
 from sphinx.builders.html import StandaloneHTMLBuilder
 from sphinx.errors import SphinxError
 from sphinx.locale import get_translation
@@ -18,11 +19,17 @@
 from sphinx.util.matching import Matcher
 from sphinx.util.osutil import ensuredir, make_filename
 
+if TYPE_CHECKING:
+    from typing import Any
+
+    from sphinx.application import Sphinx
+
 if sphinx.version_info[:2] >= (6, 1):
     from sphinx.util.display import SkipProgressMessage, progress_message
 else:
-    from sphinx.util import (  # type: ignore[attr-defined,no-redef]
-        SkipProgressMessage, progress_message
+    from sphinx.util import (  # type: ignore[no-redef]
+        SkipProgressMessage,
+        progress_message,
     )
 
 __version__ = '1.0.8'
@@ -75,16 +82,17 @@ def init(self) -> None:
         self.link_suffix = '.html'
 
         if self.config.applehelp_bundle_id is None:
-            raise SphinxError(__('You must set applehelp_bundle_id before '
-                                 'building Apple Help output'))
+            msg = __('You must set applehelp_bundle_id '
+                     'before building Apple Help output')
+            raise SphinxError(msg)
 
         self.bundle_path = path.join(self.outdir, self.config.applehelp_bundle_name + '.help')
-        self.outdir = path.join(  # type: ignore[assignment]
+        self.outdir = type(self.outdir)(Path(
             self.bundle_path,
             'Contents',
             'Resources',
             self.config.applehelp_locale + '.lproj',
-        )
+        ))
 
     def handle_finish(self) -> None:
         super().handle_finish()
@@ -94,7 +102,7 @@ def handle_finish(self) -> None:
 
     @progress_message(__('copying localized files'))
     def copy_localized_files(self) -> None:
-        source_dir = path.join(self.confdir, self.config.applehelp_locale + '.lproj')  # type: ignore  # NOQA
+        source_dir = path.join(self.confdir, self.config.applehelp_locale + '.lproj')
         target_dir = self.outdir
 
         if path.isdir(source_dir):
@@ -175,14 +183,14 @@ def build_helpindex(self, language_dir: str) -> None:
             self.config.applehelp_indexer_path,
             '-Cf',
             path.join(language_dir, 'search.helpindex'),
-            language_dir
+            language_dir,
         ]
 
         if self.config.applehelp_index_anchors is not None:
             args.append('-a')
 
         if self.config.applehelp_min_term_length is not None:
-            args += ['-m', '%s' % self.config.applehelp_min_term_length]
+            args += ['-m', f'{self.config.applehelp_min_term_length}']
 
         if self.config.applehelp_stopwords is not None:
             args += ['-s', self.config.applehelp_stopwords]
@@ -196,18 +204,19 @@ def build_helpindex(self, language_dir: str) -> None:
         else:
             try:
                 subprocess.run(args, stdout=PIPE, stderr=STDOUT, check=True)
-            except OSError:
-                raise AppleHelpIndexerFailed(__('Command not found: %s') % args[0])
-            except CalledProcessError as exc:
-                raise AppleHelpIndexerFailed(exc.stdout)
+            except OSError as err:
+                msg = __('Command not found: %s') % args[0]
+                raise AppleHelpIndexerFailed(msg) from err
+            except CalledProcessError as err:
+                raise AppleHelpIndexerFailed(err.stdout) from err
 
     @progress_message(__('signing help book'))
     def do_codesign(self) -> None:
         """If we've been asked to, sign the bundle."""
         args = [
             self.config.applehelp_codesign_path,
             '-s', self.config.applehelp_codesign_identity,
-            '-f'
+            '-f',
         ]
 
         args += self.config.applehelp_codesign_flags
@@ -220,10 +229,11 @@ def do_codesign(self) -> None:
         else:
             try:
                 subprocess.run(args, stdout=PIPE, stderr=STDOUT, check=True)
-            except OSError:
-                raise AppleHelpCodeSigningFailed(__('Command not found: %s') % args[0])
-            except CalledProcessError as exc:
-                raise AppleHelpCodeSigningFailed(exc.stdout)
+            except OSError as err:
+                msg = __('Command not found: %s') % args[0]
+                raise AppleHelpCodeSigningFailed(msg) from err
+            except CalledProcessError as err:
+                raise AppleHelpCodeSigningFailed(err.stdout) from err
 
 
 def setup(app: Sphinx) -> dict[str, Any]:
@@ -239,7 +249,7 @@ def setup(app: Sphinx) -> dict[str, Any]:
     app.add_config_value('applehelp_bundle_version', '1', 'applehelp')
     app.add_config_value('applehelp_icon', None, 'applehelp', [str])
     app.add_config_value('applehelp_kb_product',
-                         lambda self: '%s-%s' % (make_filename(self.project), self.release),
+                         lambda self: f'{make_filename(self.project)}-{self.release}',
                          'applehelp')
     app.add_config_value('applehelp_kb_url', None, 'applehelp', [str])
     app.add_config_value('applehelp_remote_url', None, 'applehelp', [str])

tests/conftest.py

@@ -1,17 +1,12 @@
+from __future__ import annotations
+
 from pathlib import Path
 
 import pytest
 
-import sphinx
-
 pytest_plugins = 'sphinx.testing.fixtures'
 
 
 @pytest.fixture(scope='session')
-def rootdir():
-    if sphinx.version_info[:2] < (7, 2):
-        from sphinx.testing.path import path
-
-        return path(__file__).parent.abspath() / 'roots'
-
+def rootdir() -> Path:
     return Path(__file__).resolve().parent / 'roots'

tests/test_applehelp.py

@@ -1,12 +1,18 @@
 """Test for applehelp extension."""
 
-from pathlib import Path
+from __future__ import annotations
+
 import plistlib
+from pathlib import Path
+from typing import TYPE_CHECKING
 
 import pytest
 
+if TYPE_CHECKING:
+    from sphinx.application import Sphinx
+
 
-def check_structure(outdir):
+def check_structure(outdir: Path) -> None:
     contentsdir = outdir / 'Contents'
     assert contentsdir.is_dir()
     assert (contentsdir / 'Info.plist').is_file()
@@ -21,7 +27,7 @@ def check_structure(outdir):
     assert (contentsdir / 'Resources' / 'en.lproj').is_dir()
 
 
-def check_localization(outdir):
+def check_localization(outdir: Path) -> None:
     lprojdir = outdir / 'Contents' / 'Resources' / 'en.lproj'
     assert (lprojdir / 'localized.txt').is_file()
 
@@ -30,7 +36,7 @@ def check_localization(outdir):
     'applehelp', testroot='basic', srcdir='applehelp_output',
     confoverrides={'applehelp_bundle_id': 'org.sphinx-doc.Sphinx.help',
                    'applehelp_disable_external_tools': True})
-def test_applehelp_output(app, status, warning):
+def test_applehelp_output(app: Sphinx) -> None:
     LPROJ_DIR = Path(app.srcdir / 'en.lproj')
     LPROJ_DIR.mkdir(parents=True, exist_ok=True)
     LPROJ_DIR.joinpath('localized.txt').touch()
@@ -39,6 +45,6 @@ def test_applehelp_output(app, status, warning):
     # Have to use bundle_path, not outdir, because we alter the latter
     # to point to the lproj directory so that the HTML arrives in the
     # correct location.
-    bundle_path = Path(app.builder.bundle_path)
+    bundle_path = Path(app.builder.bundle_path)  # type: ignore[attr-defined]
     check_structure(bundle_path)
     check_localization(bundle_path)

tox.ini

@@ -2,7 +2,7 @@
 minversion = 2.4.0
 envlist =
     py{39,310,311,312,313},
-    flake8,
+    ruff,
     mypy
 isolated_build = True
 
@@ -28,13 +28,13 @@ setenv =
 commands=
     python -X dev -X warn_default_encoding -m pytest --durations 25 {posargs}
 
-[testenv:flake8]
+[testenv:ruff]
 description =
     Run style checks.
 extras=
     lint
 commands=
-    flake8
+    ruff check
 
 [testenv:mypy]
 description =