Disallow blanket suppressions

mypy.ini

@@ -19,6 +19,7 @@ exclude = (?x)(
 	)
 # Too many false-positives
 disable_error_code = overload-overlap
+enable_error_code = ignore-without-code
 
 # Ignoring attr-defined because setuptools wraps a lot of distutils classes, adding new attributes,
 # w/o updating all the attributes and return types from the base classes for type-checkers to understand
@@ -35,7 +36,8 @@ disable_error_code = import-not-found
 # - All jaraco modules are still untyped
 # - _validate_project sometimes complains about trove_classifiers (#4296)
 # - wheel appears to be untyped
-[mypy-distutils._modified,jaraco.*,trove_classifiers,wheel.*]
+# - _aix_support is untyped
+[mypy-distutils._modified,jaraco.*,trove_classifiers,wheel.*,_aix_support]
 ignore_missing_imports = True
 
 # Even when excluding a module, import issues can show up due to following import

pkg_resources/__init__.py

@@ -2767,7 +2767,7 @@ def load(
         if require:
             # We could pass `env` and `installer` directly,
             # but keeping `*args` and `**kwargs` for backwards compatibility
-            self.require(*args, **kwargs)  # type: ignore
+            self.require(*args, **kwargs)  # type: ignore[arg-type]
         return self.resolve()
 
     def resolve(self) -> _ResolvedEntryPoint:

ruff.toml

@@ -18,6 +18,8 @@ extend-select = [
 	"UP", # pyupgrade
 	"TRY",
 	"YTT", # flake8-2020
+	"PGH", # pygrep-hooks (blanket-* rules)
+	"RUF100", # unused-noqa
 ]
 ignore = [
 	"TRY003", # raise-vanilla-args, avoid multitude of exception classes

setuptools/_distutils/compat/py38.py

@@ -25,7 +25,7 @@ def removeprefix(self, prefix):
 
 def aix_platform(osname, version, release):
     try:
-        import _aix_support  # type: ignore
+        import _aix_support
 
         return _aix_support.aix_platform()
     except ImportError:

setuptools/command/build_ext.py

@@ -30,7 +30,7 @@
 get_config_var("LDSHARED")
 # Not publicly exposed in typeshed distutils stubs, but this is done on purpose
 # See https://github.com/pypa/setuptools/pull/4228#issuecomment-1959856400
-from distutils.sysconfig import _config_vars as _CONFIG_VARS  # type: ignore # noqa
+from distutils.sysconfig import _config_vars as _CONFIG_VARS  # noqa: E402
 
 
 def _customize_compiler_for_shlib(compiler):

setuptools/config/expand.py

@@ -209,7 +209,8 @@ def _load_spec(spec: ModuleSpec, module_name: str) -> ModuleType:
         return sys.modules[name]
     module = importlib.util.module_from_spec(spec)
     sys.modules[name] = module  # cache (it also ensures `==` works on loaded items)
-    spec.loader.exec_module(module)  # type: ignore
+    assert spec.loader is not None
+    spec.loader.exec_module(module)
     return module
 
 
@@ -290,10 +291,10 @@ def find_packages(
     from setuptools.discovery import construct_package_dir
     from more_itertools import unique_everseen, always_iterable
 
-    if namespaces:
-        from setuptools.discovery import PEP420PackageFinder as PackageFinder
+    if not namespaces:
+        from setuptools.discovery import PackageFinder
     else:
-        from setuptools.discovery import PackageFinder  # type: ignore
+        from setuptools.discovery import PEP420PackageFinder as PackageFinder
 
     root_dir = root_dir or os.curdir
     where = kwargs.pop('where', ['.'])
@@ -357,14 +358,17 @@ def canonic_data_files(
     ]
 
 
-def entry_points(text: str, text_source="entry-points") -> dict[str, dict]:
+def entry_points(
+    text: str, text_source: str = "entry-points"
+) -> dict[str, dict[str, str]]:
     """Given the contents of entry-points file,
     process it into a 2-level dictionary (``dict[str, dict[str, str]]``).
     The first level keys are entry-point groups, the second level keys are
     entry-point names, and the second level values are references to objects
     (that correspond to the entry-point value).
     """
-    parser = ConfigParser(default_section=None, delimiters=("=",))  # type: ignore
+    # TODO: Explain why passing None is fine here when ConfigParser.default_section expects to be str
+    parser = ConfigParser(default_section=None, delimiters=("=",))  # type: ignore[call-overload]
     parser.optionxform = str  # case sensitive
     parser.read_string(text, text_source)
     groups = {k: dict(v.items()) for k, v in parser.items()}

setuptools/config/pyprojecttoml.py

@@ -43,8 +43,8 @@ def validate(config: dict, filepath: StrPath) -> bool:
 
     trove_classifier = validator.FORMAT_FUNCTIONS.get("trove-classifier")
     if hasattr(trove_classifier, "_disable_download"):
-        # Improve reproducibility by default. See issue 31 for validate-pyproject.
-        trove_classifier._disable_download()  # type: ignore
+        # Improve reproducibility by default. See https://github.com/abravalheri/validate-pyproject/issues/31
+        trove_classifier._disable_download()  # type: ignore[union-attr]
 
     try:
         return validator.validate(config)
@@ -322,7 +322,7 @@ def _obtain_readme(self, dist: Distribution) -> dict[str, str] | None:
 
     def _obtain_entry_points(
         self, dist: Distribution, package_dir: Mapping[str, str]
-    ) -> dict[str, dict] | None:
+    ) -> dict[str, dict[str, Any]] | None:
         fields = ("entry-points", "scripts", "gui-scripts")
         if not any(field in self.dynamic for field in fields):
             return None
@@ -332,7 +332,8 @@ def _obtain_entry_points(
             return None
 
         groups = _expand.entry_points(text)
-        expanded = {"entry-points": groups}
+        # Any is str | dict[str, str], but causes variance issues
+        expanded: dict[str, dict[str, Any]] = {"entry-points": groups}
 
         def _set_scripts(field: str, group: str):
             if group in groups:

setuptools/dist.py

@@ -28,7 +28,7 @@
 
 from . import _entry_points
 from . import _reqs
-from . import command as _  # noqa  -- imported for side-effects
+from . import command as _  # noqa: F401 -- imported for side-effects
 from ._importlib import metadata
 from .config import setupcfg, pyprojecttoml
 from .discovery import ConfigDiscovery

setuptools/tests/config/test_apply_pyprojecttoml.py

@@ -18,7 +18,7 @@
 
 from packaging.metadata import Metadata
 
-import setuptools  # noqa ensure monkey patch to metadata
+import setuptools  # noqa: F401 -- ensure monkey patch to metadata
 from setuptools.dist import Distribution
 from setuptools.config import setupcfg, pyprojecttoml
 from setuptools.config import expand

setuptools/tests/config/test_pyprojecttoml.py

@@ -18,7 +18,7 @@
 from setuptools.errors import OptionError
 
 
-import setuptools  # noqa -- force distutils.core to be patched
+import setuptools  # noqa: F401 -- force distutils.core to be patched
 import distutils.core
 
 EXAMPLE = """

setuptools/tests/test_config_discovery.py

@@ -8,7 +8,7 @@
 from setuptools.discovery import find_package_path, find_parent_package
 from setuptools.errors import PackageDiscoveryError
 
-import setuptools  # noqa -- force distutils.core to be patched
+import setuptools  # noqa: F401 -- force distutils.core to be patched
 import distutils.core
 
 import pytest

setuptools/tests/test_editable_install.py

@@ -878,18 +878,18 @@ class TestOverallBehaviour:
             "otherfile.py": "",
             "mypkg": {
                 "__init__.py": "",
-                "mod1.py": FLAT_LAYOUT["mypkg"]["mod1.py"],  # type: ignore
+                "mod1.py": FLAT_LAYOUT["mypkg"]["mod1.py"],  # type: ignore[index]
             },
-            "other": FLAT_LAYOUT["mypkg"]["subpackage"],  # type: ignore
+            "other": FLAT_LAYOUT["mypkg"]["subpackage"],  # type: ignore[index]
         },
         "namespace": {
             "pyproject.toml": dedent(PYPROJECT),
             "MANIFEST.in": EXAMPLE["MANIFEST.in"],
             "otherfile.py": "",
             "src": {
                 "mypkg": {
-                    "mod1.py": FLAT_LAYOUT["mypkg"]["mod1.py"],  # type: ignore
-                    "subpackage": FLAT_LAYOUT["mypkg"]["subpackage"],  # type: ignore
+                    "mod1.py": FLAT_LAYOUT["mypkg"]["mod1.py"],  # type: ignore[index]
+                    "subpackage": FLAT_LAYOUT["mypkg"]["subpackage"],  # type: ignore[index]
                 },
             },
         },