Add mypy.

.github/workflows/test.yml

@@ -26,9 +26,8 @@ jobs:
         with:
           python-version: 3.12
 
-      - name: Build the development environment
-        run: |
-          ./bin/build-dev
+      - name: Build the testing environment
+        run: pip install '.[test]'
         shell: bash
 
       - name: Run the tests

ancestry/extension/__init__.py

@@ -1,7 +1,7 @@
 from betty.app.extension import Extension, UserFacingExtension
 from betty.extension import Privatizer
 from betty.load import PostLoader, getLogger
-from betty.locale import Localizer
+from betty.locale import Str
 from betty.model.ancestry import PersonName, Person, Event, Place, Presence, Subject
 from betty.model.event_type import Birth
 
@@ -17,12 +17,12 @@ def comes_after(cls) -> set[type[Extension]]:
         return {Privatizer}
 
     @classmethod
-    def label(cls, localizer: Localizer) -> str:
-        return 'Publish people'
+    def label(cls) -> Str:
+        return Str.plain('Publish people')
 
     @classmethod
-    def description(cls, localizer: Localizer) -> str:
-        return 'Publishes curated information about selected people.'
+    def description(cls) -> Str:
+        return Str.plain('Publishes curated information about selected people.')
 
     async def post_load(self) -> None:
         self._publish_people()

bin/test

@@ -4,10 +4,10 @@ set -Eeuo pipefail
 
 cd "$(dirname "$0")/.."
 
-# Lint the shell scripts.
 for file in ./bin/*; do
     shellcheck -x "$file"
 done
 
-# Test the Python code style.
 flake8 --ignore=E501 ./ancestry
+
+mypy

mypy.ini

@@ -0,0 +1,5 @@
+[mypy]
+files = ./ancestry
+
+[mypy-ancestry.*]
+disable_error_code = explicit-override

setup.py

@@ -1,5 +1,6 @@
 from setuptools import setup, find_packages
 
+
 SETUP = {
     'name': 'ancestry',
     'python_requires': '~= 3.11',
@@ -9,6 +10,7 @@
     'extras_require': {
         'development': [
             'autopep8 ~= 2.0.4',
+            'basedmypy ~= 2.0, >= 2.2.1',
             'flake8 ~= 6.1.0',
         ],
     },