Use a symbolic macro if supported

With Bazel 8 and if the wrapped kind is not a legacy macro, use a symbolic macro instead of a legacy macro.

MODULE.bazel

@@ -4,6 +4,7 @@ module(
     compatibility_level = 1,
 )
 
+bazel_dep(name = "bazel_features", version = "1.22.0")
 bazel_dep(name = "bazel_skylib", version = "1.4.1")
 bazel_dep(name = "platforms", version = "0.0.6")
 

with_cfg/private/providers.bzl

@@ -9,6 +9,7 @@ RuleInfo = provider(fields = [
     "kind",
     "native",
     "providers",
+    "supports_inheritance",
     "test",
 ])
 

with_cfg/private/with_cfg.bzl

@@ -127,6 +127,7 @@ def with_cfg(
         implicit_targets = implicit_targets,
         providers = DEFAULT_PROVIDERS + extra_providers,
         native = _is_native(kind),
+        supports_inheritance = _supports_inheritance(kind),
     )
     return make_builder(rule_info)
 
@@ -155,5 +156,9 @@ def is_test(rule_name):
 def _is_native(kind):
     return str(kind).startswith("<built-in rule ")
 
+def _supports_inheritance(kind):
+    # Legacy macros don't support inheritance.
+    return not str(kind).startswith("<function ")
+
 def get_implicit_targets(rule_name):
     return IMPLICIT_TARGETS.get(rule_name, [])

with_cfg/private/wrapper.bzl

@@ -1,3 +1,4 @@
+load("@bazel_features//:features.bzl", "bazel_features")
 load(":args.bzl", "rewrite_args")
 load(":rewrite.bzl", "make_label_rewriter", "rewrite_locations_in_attr")
 load(":select.bzl", "map_attr")
@@ -15,7 +16,7 @@ def make_wrapper(
         values,
         original_settings_label,
         attrs_to_reset):
-    return lambda *, name, **kwargs: _wrapper(
+    wrapper_impl = lambda *, name, **kwargs: _wrapper(
         name = name,
         kwargs = kwargs,
         rule_info = rule_info,
@@ -25,6 +26,12 @@ def make_wrapper(
         original_settings_label = original_settings_label,
         attrs_to_reset = attrs_to_reset,
     )
+    if bazel_features.globals.macro and rule_info.supports_inheritance:
+        return bazel_features.globals.macro(
+            implementation = wrapper_impl,
+            inherit_attrs = rule_info.kind,
+        )
+    return wrapper_impl
 
 # Attributes common to all rules.
 # These attributes are applied to all targets generated by the wrapper.