Apply updates from cookiecutter

This automated commit applies the latest updates from our cookiecutters [1] to
this repo.

[1]: https://github.com/hypothesis/cookiecutters

.github/workflows/ci.yml

@@ -35,6 +35,16 @@ jobs:
           python-version: '3.9'
       - run: python -m pip install 'tox<4'
       - run: tox -e lint
+  Typecheck:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Install Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.9'
+      - run: python -m pip install 'tox<4'
+      - run: tox -e typecheck
   Tests:
     runs-on: ubuntu-latest
     strategy:

Makefile

@@ -65,7 +65,7 @@ functests-py38: python
 $(call help,make sure,"make sure that the formatting$(comma) linting and tests all pass")
 sure: python
 sure:
-	@pyenv exec tox --parallel -qe 'checkformatting,lint,tests,py{38}-tests,coverage,functests,py{38}-functests'
+	@pyenv exec tox --parallel -qe 'checkformatting,lint,typecheck,tests,py{38}-tests,coverage,functests,py{38}-functests'
 
 .PHONY: template
 $(call help,make template,"update from the latest cookiecutter template")

pyproject.toml

@@ -139,6 +139,24 @@ good-names = [
 output-format = "colorized"
 score = "no"
 
+[tool.mypy]
+warn_unused_configs = true
+warn_redundant_casts = true
+warn_unused_ignores = true
+
+disable_error_code = [
+    # https://mypy.readthedocs.io/en/stable/error_code_list.html#code-import-untyped
+    "import-untyped",
+]
+
+[[tool.mypy.overrides]]
+module= [
+  # Don't try to typecheck the tests for now
+  "tests.*",
+]
+ignore_errors = true
+
+
 [tool.hdev]
 project_name = "pyramid-googleauth"
 project_type = "library"