fix: Don't return class variables as parameters of dataclasses

src/griffe/extensions/dataclasses.py

@@ -74,14 +74,20 @@ def _dataclass_parameters(class_: Class) -> list[Parameter]:
     # All parameters marked as keyword-only.
     kw_only = dec_args.get("kw_only") == "True"
 
+    # Attributes that have labels for these characteristics are
+    # not class parameters:
+    #   - @property
+    #   - @cached_property
+    #   - ClassVar annotation
+    non_parameter_labels = {"property", "class-attribute"}
+
     # Iterate on current attributes to find parameters.
     parameters = []
     for member in class_.members.values():
         if member.is_attribute:
             member = cast(Attribute, member)
 
-            # Exclude @property and @cached_property attributes
-            if "property" in member.labels:
+            if member.labels & non_parameter_labels:
                 continue
 
             # Start of keyword-only parameters.

tests/test_dataclasses.py

@@ -91,16 +91,18 @@ def test_alias_proxies() -> None:
                 assert name in alias_members
 
 
-def test_dataclass_properties() -> None:
-    """Don't return properties as parameters of dataclasses."""
+def test_dataclass_properties_and_class_variables() -> None:
+    """Don't return properties or typed class variables as parameters of dataclasses."""
     code = """
         from dataclasses import dataclass
         from functools import cached_property
+        from typing import ClassVar
 
         @dataclass
         class Point:
             x: float
             y: float
+            z: ClassVar[float] = 3
 
             @property
             def a(self):