Adds example type checking configuration, with a default broard ignore and a tight scoped check

pyproject.toml

@@ -154,10 +154,6 @@ typing = [
 [tool.uv]
 required-version = ">=0.9.0"
 package = false
-environments = [
-  "sys_platform == 'darwin'",
-  "sys_platform == 'linux'",
-]
 
 [tool.uv.sources]
 # Markers are chosen to select these almost exclusively when building the Docker image
@@ -333,6 +329,10 @@ exclude_also = [
 
 [tool.mypy]
 mypy_path = "src"
+files = [
+  "src/documents/plugins/date_parsing",
+  "src/documents/tests/date_parsing",
+]
 plugins = [
   "mypy_django_plugin.main",
   "mypy_drf_plugin.main",
@@ -344,5 +344,28 @@ disallow_untyped_defs = true
 warn_redundant_casts = true
 warn_unused_ignores = true
 
+# This prevents errors from imports, but allows type-checking logic to work
+follow_imports = "silent"
+
+[[tool.mypy.overrides]]
+module = [
+  "documents.*",
+  "paperless.*",
+  "paperless_ai.*",
+  "paperless_mail.*",
+  "paperless_tesseract.*",
+  "paperless_remote.*",
+  "paperless_text.*",
+  "paperless_tika.*",
+]
+ignore_errors = true
+
+[[tool.mypy.overrides]]
+module = [
+  "documents.plugins.date_parsing.*",
+  "documents.tests.date_parsing.*",
+]
+ignore_errors = false
+
 [tool.django-stubs]
 django_settings_module = "paperless.settings"

src/documents/tests/date_parsing/test_date_parser_plugin_loading.py

@@ -2,7 +2,6 @@ import datetime
 import logging
 from collections.abc import Iterator
 from importlib.metadata import EntryPoint
-from pathlib import Path
 
 import pytest
 import pytest_mock
@@ -17,12 +16,12 @@ from documents.plugins.date_parsing.regex_parser import RegexDateParserPlugin
 
 
 class AlphaParser(DateParserPluginBase):
-    def parse(self, filename: Path, content: str) -> Iterator[datetime.datetime]:
+    def parse(self, filename: str, content: str) -> Iterator[datetime.datetime]:
         yield timezone.now()
 
 
 class BetaParser(DateParserPluginBase):
-    def parse(self, filename: Path, content: str) -> Iterator[datetime.datetime]:
+    def parse(self, filename: str, content: str) -> Iterator[datetime.datetime]:
         yield timezone.now()
 
 
@@ -98,17 +97,9 @@ class TestDiscoverParserClass:
     ) -> None:
         """If exactly one valid plugin is discovered, it should be returned without logging a warning."""
 
-        class AlphaPlugin(DateParserPluginBase):
-            def parse(
-                self,
-                filename: Path,
-                content: str,
-            ) -> Iterator[datetime.datetime]:
-                yield timezone.now()
-
         ep = mocker.MagicMock(spec=EntryPoint)
         ep.name = "alpha"
-        ep.load.return_value = AlphaPlugin
+        ep.load.return_value = AlphaParser
 
         mock_entry_points = mocker.patch(
             "documents.plugins.date_parsing.entry_points",
@@ -124,8 +115,8 @@ class TestDiscoverParserClass:
         # It should have called entry_points with the correct group
         mock_entry_points.assert_called_once_with(group=DATE_PARSER_ENTRY_POINT_GROUP)
 
-        # The discovered class should be exactly our AlphaPlugin
-        assert result is AlphaPlugin
+        # The discovered class should be exactly our AlphaParser
+        assert result is AlphaParser
 
         # No warnings should have been logged
         assert not any(

src/documents/tests/date_parsing/test_date_parsing.py

@@ -1,5 +1,6 @@
 import datetime
 import logging
+from typing import Any
 
 import pytest
 import pytest_mock
@@ -261,7 +262,11 @@ class TestRegexDateParser:
         # Patch the dateparser.parse
         target = "documents.plugins.date_parsing.base.dateparser.parse"
 
-        def fake_parse(date_string: str, settings=None, locales=None):
+        def fake_parse(
+            date_string: str,
+            settings: dict[str, Any] | None = None,
+            locales: None = None,
+        ) -> datetime.datetime | None:
             date_order = settings.get("DATE_ORDER") if settings else None
 
             # Filename-style YYYY-MM-DD / YYYY.MM.DD
@@ -332,7 +337,11 @@ class TestRegexDateParser:
 
         target = "documents.plugins.date_parsing.base.dateparser.parse"
 
-        def fake_parse(date_string: str, settings=None, locales=None):
+        def fake_parse(
+            date_string: str,
+            settings: dict[str, Any] | None = None,
+            locales: None = None,
+        ) -> datetime.datetime | None:
             if "10/12/2023" in date_string or "10-12-2023" in date_string:
                 # ignored date
                 return datetime.datetime(2023, 12, 10, tzinfo=datetime.timezone.utc)
@@ -393,7 +402,11 @@ class TestRegexDateParser:
         # Patch the module's dateparser.parse so we can inspect calls
         target = "documents.plugins.date_parsing.base.dateparser.parse"
 
-        def fake_parse(date_string: str, settings=None, locales=None):
+        def fake_parse(
+            date_string: str,
+            settings: dict[str, Any] | None = None,
+            locales: None = None,
+        ) -> datetime.datetime | None:
             # return distinct datetimes so we can tell which source was parsed
             if "25/12/2022" in date_string:
                 return datetime.datetime(2022, 12, 25, tzinfo=datetime.timezone.utc)