fixing spockTuner class based on new underlying functions. adding in …

…stubs for type hinting

spock/addons/tune/config.pyi

@@ -0,0 +1,39 @@
+from typing import Any, Callable, Tuple, TypeVar, Union, overload
+
+from attr import attrib, field
+
+_T = TypeVar("_T")
+_C = TypeVar("_C", bound=type)
+
+# Note: from here
+# https://github.com/python-attrs/attrs/blob/main/src/attr/__init__.pyi
+
+# Static type inference support via __dataclass_transform__ implemented as per:
+# https://github.com/microsoft/pyright/blob/main/specs/dataclass_transforms.md
+# This annotation must be applied to all overloads of "spock_attr"
+
+# NOTE: This is a typing construct and does not exist at runtime.  Extensions
+# wrapping attrs decorators should declare a separate __dataclass_transform__
+# signature in the extension module using the specification linked above to
+# provide pyright support -- this currently doesn't work in PyCharm
+def __dataclass_transform__(
+    *,
+    eq_default: bool = True,
+    order_default: bool = False,
+    kw_only_default: bool = False,
+    field_descriptors: Tuple[Union[type, Callable[..., Any]], ...] = (()),
+) -> Callable[[_T], _T]: ...
+@overload
+@__dataclass_transform__(kw_only_default=True, field_descriptors=(attrib, field))
+def _spock_tune(
+    maybe_cls: _C,
+    kw_only: bool = True,
+    make_init: bool = True,
+) -> _C: ...
+@overload
+@__dataclass_transform__(kw_only_default=True, field_descriptors=(attrib, field))
+def _spock_tune(
+    maybe_cls: None = ...,
+    kw_only: bool = True,
+    make_init: bool = True,
+) -> Callable[[_C], _C]: ...