chore: stricter mypy checking

pyproject.toml

@@ -18,6 +18,7 @@ multi_line_output = 3
 
 
 [tool.pytest.ini_options]
+minversion = 6.0
 junit_family = "xunit2"
 testpaths = [
     "test",
@@ -26,7 +27,6 @@ testpaths = [
 
 
 [tool.mypy]
-minversion = 6.0
 python_version = 3.7
 files = [
     "cibuildwheel/*.py",
@@ -36,33 +36,29 @@ files = [
 ]
 warn_unused_configs = true
 warn_redundant_casts = true
-
-# Don't require typed functions for tests
-[[tool.mypy.overrides]]
-module = ["test", "unit_test"]
-check_untyped_defs = true
-
-[[tool.mypy.overrides]]
-module = "cibuildwheel"
-disallow_any_generics = true
-disallow_subclassing_any = true
-disallow_untyped_calls = true
-disallow_untyped_defs = true
-disallow_incomplete_defs = true
-check_untyped_defs = true
-disallow_untyped_decorators = true
-no_implicit_optional = true
-warn_unused_ignores = true
-warn_return_any = true
 no_implicit_reexport = true
 strict_equality = true
+warn_unused_ignores = true
+check_untyped_defs = true
+
+disallow_subclassing_any = true
+disallow_any_generics = true
+warn_return_any = true
+no_implicit_optional = true
+
+[[tool.mypy.overrides]]
+module = "cibuildwheel.*"
+disallow_untyped_defs = true
+disallow_untyped_calls = true
+disallow_incomplete_defs = true
+disallow_untyped_decorators = true
 
 [[tool.mypy.overrides]]
 module = [
     "setuptools",
     "pytest", # ignored in pre-commit to speed up check
     "bashlex",
-    "toml.encoder", # missing from stub package
+    "toml.encoder", # encoder missing from stub package
     "bracex",
     "importlib_resources",
     "nox",