Fixed mypy complaints

pkgs/clan-cli/pyproject.toml

@@ -31,12 +31,15 @@ warn_redundant_casts = true
 disallow_untyped_calls = true
 disallow_untyped_defs = true
 no_implicit_optional = true
+follow_imports = "normal"
 exclude = [
   "clan_cli.nixpkgs",
-  "tests/openapi_client",
-  "openapi_client",
 ]
 
+[[tool.mypy.overrides]]
+module = "openapi_client.*"
+ignore_errors = true
+
 [[tool.mypy.overrides]]
 module = "argcomplete.*"
 ignore_missing_imports = true