pre-commit: Enable mypy

Change-Id: I8ef122d9aa292758bacf349d964ef7cb5bbed288
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>

.pre-commit-config.yaml

@@ -34,3 +34,18 @@ repos:
         additional_dependencies:
           - flake8-import-order~=0.18.2
         exclude: '^(doc|releasenotes|tools)/.*$'
+  - repo: https://github.com/pre-commit/mirrors-mypy
+    rev: v1.13.0
+    hooks:
+      - id: mypy
+        additional_dependencies:
+          - cliff
+          - keystoneauth1
+          - types-requests
+        # keep this in-sync with '[mypy] exclude' in 'setup.cfg'
+        exclude: |
+          (?x)(
+            doc/.*
+            | examples/.*
+            | releasenotes/.*
+          )

pyproject.toml

@@ -1,3 +1,37 @@
+[tool.mypy]
+python_version = "3.9"
+show_column_numbers = true
+show_error_context = true
+ignore_missing_imports = true
+follow_imports = "normal"
+check_untyped_defs = true
+warn_unused_ignores = true
+warn_return_any = false
+warn_unused_configs = true
+warn_redundant_casts = true
+strict_equality = true
+disallow_untyped_decorators = true
+disallow_any_generics = true
+# TODO(stephenfin): Change this once we've fully typed everything
+disallow_subclassing_any = false
+disallow_untyped_calls = false
+disallow_incomplete_defs = true
+disallow_untyped_defs = false
+no_implicit_reexport = true
+extra_checks = true
+# keep this in-sync with 'mypy.exclude' in '.pre-commit-config.yaml'
+exclude = '''
+(?x)(
+  doc
+  | examples
+  | releasenotes
+)
+'''
+
+[[tool.mypy.overrides]]
+module = ["osc_lib.tests.*"]
+ignore_errors = true
+
 [tool.ruff]
 line-length = 79