python · yangdanny97 · Aug 11, 2026 · Aug 12, 2026 · Aug 13, 2026 · Aug 13, 2026
diff --git a/conformance/results/mypy/callables_kwargs.toml b/conformance/results/mypy/callables_kwargs.toml
@@ -1,29 +1,70 @@
 conformant = "Partial"
 notes = """
 Allows callable without kwargs to be assigned to callable with unpacked kwargs.
+Does not support the `closed` and `extra_items` TypedDict class arguments.
+Does not reject unpacking an open TypedDict in a call to a callable that has no `**kwargs`.
+Does not reject unpacking an open TypedDict in a call to a callable whose `**kwargs` is typed with a closed TypedDict.
+Does not check the type of an unpacked TypedDict's extra items against the target callable's `**kwargs` annotation.
+Does not check the type of an unpacked TypedDict's extra items against the target callable's named keyword parameters.
+Does not reject unpacking a TypedDict that sets `extra_items` in a call to a callable that has no `**kwargs`.
+Does not reject unpacking a TypedDict that sets `extra_items` in a call to a callable whose `**kwargs` is typed with a closed TypedDict.
 """
 output = """
-callables_kwargs.py:46: error: Missing named argument "v1" for "func1"  [call-arg]
-callables_kwargs.py:46: error: Missing named argument "v3" for "func1"  [call-arg]
-callables_kwargs.py:51: error: Unexpected keyword argument "v4" for "func1"  [call-arg]
-callables_kwargs.py:52: error: Too many positional arguments for "func1"  [misc]
-callables_kwargs.py:58: error: Argument 1 to "func1" has incompatible type "**dict[str, str]"; expected "int"  [arg-type]
-callables_kwargs.py:61: error: Argument 1 to "func1" has incompatible type "**dict[str, object]"; expected "int"  [arg-type]
-callables_kwargs.py:61: error: Argument 1 to "func1" has incompatible type "**dict[str, object]"; expected "str"  [arg-type]
-callables_kwargs.py:63: error: "func1" gets multiple values for keyword argument "v1"  [misc]
-callables_kwargs.py:64: error: "func2" gets multiple values for keyword argument "v3"  [misc]
-callables_kwargs.py:64: error: Argument 1 to "func2" has incompatible type "int"; expected "str"  [arg-type]
-callables_kwargs.py:65: error: "func2" gets multiple values for keyword argument "v1"  [misc]
-callables_kwargs.py:101: error: Incompatible types in assignment (expression has type "def func1(**kwargs: **TD2) -> None", variable has type "TDProtocol3")  [assignment]
-callables_kwargs.py:101: note: "TDProtocol3.__call__" has type "def __call__(self, *, v1: int, v2: int, v3: str) -> None"
-callables_kwargs.py:102: error: Incompatible types in assignment (expression has type "def func1(**kwargs: **TD2) -> None", variable has type "TDProtocol4")  [assignment]
-callables_kwargs.py:102: note: "TDProtocol4.__call__" has type "def __call__(self, *, v1: int) -> None"
-callables_kwargs.py:103: error: Incompatible types in assignment (expression has type "def func1(**kwargs: **TD2) -> None", variable has type "TDProtocol5")  [assignment]
-callables_kwargs.py:103: note: "TDProtocol5.__call__" has type "def __call__(self, v1: int, v3: str) -> None"
-callables_kwargs.py:111: error: Overlap between parameter names and ** TypedDict items: "v1"  [misc]
-callables_kwargs.py:122: error: Unpack item in ** parameter must be a TypedDict  [misc]
+callables_kwargs.py:23: error: Unexpected keyword argument "closed" for "__init_subclass__" of "TypedDict"  [call-arg]
+callables_kwargs.py:27: error: Unexpected keyword argument "extra_items" for "__init_subclass__" of "TypedDict"  [call-arg]
+callables_kwargs.py:55: error: Missing named argument "v1" for "func1"  [call-arg]
+callables_kwargs.py:55: error: Missing named argument "v3" for "func1"  [call-arg]
+callables_kwargs.py:60: error: Unexpected keyword argument "v4" for "func1"  [call-arg]
+callables_kwargs.py:61: error: Too many positional arguments for "func1"  [misc]
+callables_kwargs.py:67: error: Argument 1 to "func1" has incompatible type "**dict[str, str]"; expected "int"  [arg-type]
+callables_kwargs.py:70: error: Argument 1 to "func1" has incompatible type "**dict[str, object]"; expected "int"  [arg-type]
+callables_kwargs.py:70: error: Argument 1 to "func1" has incompatible type "**dict[str, object]"; expected "str"  [arg-type]
+callables_kwargs.py:72: error: "func1" gets multiple values for keyword argument "v1"  [misc]
+callables_kwargs.py:73: error: "func2" gets multiple values for keyword argument "v3"  [misc]
+callables_kwargs.py:73: error: Argument 1 to "func2" has incompatible type "int"; expected "str"  [arg-type]
+callables_kwargs.py:74: error: "func2" gets multiple values for keyword argument "v1"  [misc]
+callables_kwargs.py:121: error: Incompatible types in assignment (expression has type "def func1(**kwargs: **TD2) -> None", variable has type "TDProtocol3")  [assignment]
+callables_kwargs.py:121: note: "TDProtocol3.__call__" has type "def __call__(self, *, v1: int, v2: int, v3: str) -> None"
+callables_kwargs.py:122: error: Incompatible types in assignment (expression has type "def func1(**kwargs: **TD2) -> None", variable has type "TDProtocol4")  [assignment]
+callables_kwargs.py:122: note: "TDProtocol4.__call__" has type "def __call__(self, *, v1: int) -> None"
+callables_kwargs.py:123: error: Incompatible types in assignment (expression has type "def func1(**kwargs: **TD2) -> None", variable has type "TDProtocol5")  [assignment]
+callables_kwargs.py:123: note: "TDProtocol5.__call__" has type "def __call__(self, v1: int, v3: str) -> None"
+callables_kwargs.py:131: error: Overlap between parameter names and ** TypedDict items: "v1"  [misc]
+callables_kwargs.py:142: error: Unpack item in ** parameter must be a TypedDict  [misc]
+callables_kwargs.py:166: error: Unexpected keyword argument "closed" for "__init_subclass__" of "TypedDict"  [call-arg]
+callables_kwargs.py:170: error: Unexpected keyword argument "closed" for "__init_subclass__" of "TypedDict"  [call-arg]
+callables_kwargs.py:174: error: Unexpected keyword argument "extra_items" for "__init_subclass__" of "TypedDict"  [call-arg]
+callables_kwargs.py:178: error: Unexpected keyword argument "extra_items" for "__init_subclass__" of "TypedDict"  [call-arg]
+callables_kwargs.py:182: error: Unexpected keyword argument "extra_items" for "__init_subclass__" of "TypedDict"  [call-arg]
 """
 conformance_automated = "Fail"
 errors_diff = """
-Line 134: Expected 1 errors
+Line 154: Expected 1 errors
+Line 223: Expected 1 errors
+Line 225: Expected 1 errors
+Line 226: Expected 1 errors
+Line 228: Expected 1 errors
+Line 229: Expected 1 errors
+Line 230: Expected 1 errors
+Line 238: Expected 1 errors
+Line 240: Expected 1 errors
+Line 241: Expected 1 errors
+Line 243: Expected 1 errors
+Line 244: Expected 1 errors
+Line 245: Expected 1 errors
+Line 264: Expected 1 errors
+Line 265: Expected 1 errors
+Line 267: Expected 1 errors
+Line 268: Expected 1 errors
+Line 270: Expected 1 errors
+Line 271: Expected 1 errors
+Line 272: Expected 1 errors
+Line 273: Expected 1 errors
+Line 23: Unexpected errors ['callables_kwargs.py:23: error: Unexpected keyword argument "closed" for "__init_subclass__" of "TypedDict"  [call-arg]']
+Line 27: Unexpected errors ['callables_kwargs.py:27: error: Unexpected keyword argument "extra_items" for "__init_subclass__" of "TypedDict"  [call-arg]']
+Line 166: Unexpected errors ['callables_kwargs.py:166: error: Unexpected keyword argument "closed" for "__init_subclass__" of "TypedDict"  [call-arg]']
+Line 170: Unexpected errors ['callables_kwargs.py:170: error: Unexpected keyword argument "closed" for "__init_subclass__" of "TypedDict"  [call-arg]']
+Line 174: Unexpected errors ['callables_kwargs.py:174: error: Unexpected keyword argument "extra_items" for "__init_subclass__" of "TypedDict"  [call-arg]']
+Line 178: Unexpected errors ['callables_kwargs.py:178: error: Unexpected keyword argument "extra_items" for "__init_subclass__" of "TypedDict"  [call-arg]']
+Line 182: Unexpected errors ['callables_kwargs.py:182: error: Unexpected keyword argument "extra_items" for "__init_subclass__" of "TypedDict"  [call-arg]']
 """
diff --git a/conformance/results/pycroscope/callables_kwargs.toml b/conformance/results/pycroscope/callables_kwargs.toml
@@ -1,19 +1,44 @@
-conformance_automated = "Pass"
+conformant = "Partial"
+notes = """
+Does not reject unpacking an open TypedDict in a call to a callable that has no `**kwargs`.
+Does not reject unpacking an open TypedDict in a call to a callable whose `**kwargs` is typed with a closed TypedDict.
+"""
+conformance_automated = "Fail"
 errors_diff = """
+Line 223: Expected 1 errors
+Line 226: Expected 1 errors
+Line 229: Expected 1 errors
+Line 230: Expected 1 errors
+Line 238: Expected 1 errors
+Line 241: Expected 1 errors
+Line 244: Expected 1 errors
+Line 245: Expected 1 errors
 """
 output = """
-./callables_kwargs.py:46:4: In call to callables_kwargs.func1: Missing required argument 'v1' [incompatible_call]
-./callables_kwargs.py:51:4: In call to callables_kwargs.func1: Got an unexpected keyword argument 'v4' [incompatible_call]
-./callables_kwargs.py:52:4: In call to callables_kwargs.func1: Missing required argument 'v1' [incompatible_call]
-./callables_kwargs.py:58:4: Incompatible argument type for v1: expected int but got str [incompatible_argument]
-./callables_kwargs.py:61:4: In call to callables_kwargs.func1: Got an unexpected keyword argument 'v4' [incompatible_call]
-./callables_kwargs.py:63:4: Multiple values provided for argument 'v1' [incompatible_call]
-./callables_kwargs.py:64:4: In call to callables_kwargs.func2: Parameter 'v3' provided as both a positional and a keyword argument [incompatible_call]
-./callables_kwargs.py:65:4: Multiple values provided for argument 'v1' [incompatible_call]
-./callables_kwargs.py:101:0: Incompatible assignment: expected callables_kwargs.TDProtocol3, got function 'callables_kwargs.func1' [incompatible_assignment]
-./callables_kwargs.py:102:0: Incompatible assignment: expected callables_kwargs.TDProtocol4, got function 'callables_kwargs.func1' [incompatible_assignment]
-./callables_kwargs.py:103:0: Incompatible assignment: expected callables_kwargs.TDProtocol5, got function 'callables_kwargs.func1' [incompatible_assignment]
-./callables_kwargs.py:111:21: Parameter v1 overlaps with TypedDict key in **kwargs [invalid_annotation]
-./callables_kwargs.py:122:12: Expected TypedDict type inside Unpack[] for **kwargs [invalid_annotation]
-./callables_kwargs.py:134:0: Incompatible assignment: expected callables_kwargs.TDProtocol6, got function 'callables_kwargs.func7' [incompatible_assignment]
+./callables_kwargs.py:55:4: In call to callables_kwargs.func1: Missing required argument 'v1' [incompatible_call]
+./callables_kwargs.py:60:4: In call to callables_kwargs.func1: Got an unexpected keyword argument 'v4' [incompatible_call]
+./callables_kwargs.py:61:4: In call to callables_kwargs.func1: Missing required argument 'v1' [incompatible_call]
+./callables_kwargs.py:67:4: Incompatible argument type for v1: expected int but got str [incompatible_argument]
+./callables_kwargs.py:70:4: In call to callables_kwargs.func1: Got an unexpected keyword argument 'v4' [incompatible_call]
+./callables_kwargs.py:72:4: Multiple values provided for argument 'v1' [incompatible_call]
+./callables_kwargs.py:73:4: In call to callables_kwargs.func2: Parameter 'v3' provided as both a positional and a keyword argument [incompatible_call]
+./callables_kwargs.py:74:4: Multiple values provided for argument 'v1' [incompatible_call]
+./callables_kwargs.py:121:0: Incompatible assignment: expected callables_kwargs.TDProtocol3, got function 'callables_kwargs.func1' [incompatible_assignment]
+./callables_kwargs.py:122:0: Incompatible assignment: expected callables_kwargs.TDProtocol4, got function 'callables_kwargs.func1' [incompatible_assignment]
+./callables_kwargs.py:123:0: Incompatible assignment: expected callables_kwargs.TDProtocol5, got function 'callables_kwargs.func1' [incompatible_assignment]
+./callables_kwargs.py:131:21: Parameter v1 overlaps with TypedDict key in **kwargs [invalid_annotation]
+./callables_kwargs.py:142:12: Expected TypedDict type inside Unpack[] for **kwargs [invalid_annotation]
+./callables_kwargs.py:154:0: Incompatible assignment: expected callables_kwargs.TDProtocol6, got function 'callables_kwargs.func7' [incompatible_assignment]
+./callables_kwargs.py:225:4: Incompatible argument type for kwargs: expected dict[str, str] but got <dict containing {**{str?: object}}> [incompatible_argument]
+./callables_kwargs.py:228:4: Incompatible argument type for kwargs: expected dict[str, str] but got <dict containing {**{str?: object}}> [incompatible_argument]
+./callables_kwargs.py:240:4: Incompatible argument type for kwargs: expected dict[str, str] but got <dict containing {**{str?: object}}> [incompatible_argument]
+./callables_kwargs.py:243:4: Incompatible argument type for kwargs: expected dict[str, str] but got <dict containing {**{str?: object}}> [incompatible_argument]
+./callables_kwargs.py:264:4: In call to callables_kwargs.takes_name: **kwargs provided but not used [incompatible_call]
+./callables_kwargs.py:265:4: Incompatible argument type for kwargs: expected dict[str, str] but got <dict containing {**{str: int}}> [incompatible_argument]
+./callables_kwargs.py:267:4: In call to callables_kwargs.takes_name: **kwargs provided but not used [incompatible_call]
+./callables_kwargs.py:268:4: Incompatible argument type for kwargs: expected dict[str, str] but got <dict containing {**{str: int}}> [incompatible_argument]
+./callables_kwargs.py:270:4: In call to callables_kwargs.takes_closed: **kwargs provided but not used [incompatible_call]
+./callables_kwargs.py:271:4: In call to callables_kwargs.takes_closed: **kwargs provided but not used [incompatible_call]
+./callables_kwargs.py:272:4: Incompatible argument type for label: expected str but got int [incompatible_argument]
+./callables_kwargs.py:273:4: Incompatible argument type for label: expected str but got int [incompatible_argument]
 """
diff --git a/conformance/results/pyrefly/callables_kwargs.toml b/conformance/results/pyrefly/callables_kwargs.toml
@@ -1,23 +1,54 @@
-conformant = "Pass"
-conformance_automated = "Pass"
+conformant = "Partial"
+notes = """
+Does not reject unpacking an open TypedDict in a call to a callable that has no `**kwargs`.
+Does not reject unpacking an open TypedDict in a call to a callable whose `**kwargs` is typed with a closed TypedDict.
+Does not check the type of an unpacked TypedDict's extra items against the target callable's `**kwargs` annotation.
+Does not check the type of an unpacked TypedDict's extra items against the target callable's named keyword parameters.
+Does not reject unpacking a TypedDict that sets `extra_items` in a call to a callable that has no `**kwargs`.
+Does not reject unpacking a TypedDict that sets `extra_items` in a call to a callable whose `**kwargs` is typed with a closed TypedDict.
+Incorrectly rejects assigning a callable without `**kwargs` to a callable whose `**kwargs` is typed with a TypedDict that sets `extra_items=Never`.
+"""
+conformance_automated = "Fail"
 errors_diff = """
+Line 223: Expected 1 errors
+Line 225: Expected 1 errors
+Line 226: Expected 1 errors
+Line 228: Expected 1 errors
+Line 229: Expected 1 errors
+Line 230: Expected 1 errors
+Line 238: Expected 1 errors
+Line 240: Expected 1 errors
+Line 241: Expected 1 errors
+Line 243: Expected 1 errors
+Line 244: Expected 1 errors
+Line 245: Expected 1 errors
+Line 264: Expected 1 errors
+Line 265: Expected 1 errors
+Line 267: Expected 1 errors
+Line 268: Expected 1 errors
+Line 270: Expected 1 errors
+Line 271: Expected 1 errors
+Line 272: Expected 1 errors
+Line 273: Expected 1 errors
+Line 156: Unexpected errors ["`(*, v1: int, v3: str, v2: str = '') -> None` is not assignable to `TDProtocol8` [bad-assignment]"]
 """
 output = """
-ERROR callables_kwargs.py:46:10-12: Missing argument `v1` in function `func1` [missing-argument]
-ERROR callables_kwargs.py:46:10-12: Missing argument `v3` in function `func1` [missing-argument]
-ERROR callables_kwargs.py:51:32-34: Unexpected keyword argument `v4` in function `func1` [unexpected-keyword]
-ERROR callables_kwargs.py:52:11-12: Expected argument `v1` to be passed by name in function `func1` [unexpected-positional-argument]
-ERROR callables_kwargs.py:52:11-12: Expected 0 positional arguments, got 3 in function `func1` [bad-argument-count]
-ERROR callables_kwargs.py:52:14-16: Expected argument `v3` to be passed by name in function `func1` [unexpected-positional-argument]
-ERROR callables_kwargs.py:58:11-20: Unpacked keyword argument `str` is not assignable to parameter `v1` with type `int` in function `func1` [bad-argument-type]
-ERROR callables_kwargs.py:63:17-22: Multiple values for argument `v1` in function `func1` [bad-keyword-argument]
-ERROR callables_kwargs.py:64:11-12: Argument `Literal[1]` is not assignable to parameter `v3` with type `str` in function `func2` [bad-argument-type]
-ERROR callables_kwargs.py:64:14-19: Multiple values for argument `v3` in function `func2` [bad-keyword-argument]
-ERROR callables_kwargs.py:65:17-22: Multiple values for argument `v1` in function `func2` [bad-keyword-argument]
-ERROR callables_kwargs.py:101:19-24: `(**kwargs: Unpack[TD2]) -> None` is not assignable to `TDProtocol3` [bad-assignment]
-ERROR callables_kwargs.py:102:19-24: `(**kwargs: Unpack[TD2]) -> None` is not assignable to `TDProtocol4` [bad-assignment]
-ERROR callables_kwargs.py:103:19-24: `(**kwargs: Unpack[TD2]) -> None` is not assignable to `TDProtocol5` [bad-assignment]
-ERROR callables_kwargs.py:111:20-41: TypedDict key 'v1' in **kwargs overlaps with parameter 'v1' [bad-function-definition]
-ERROR callables_kwargs.py:122:21-30: `Unpack` in **kwargs annotation must be used only with a `TypedDict` [invalid-annotation]
-ERROR callables_kwargs.py:134:19-24: `(*, v1: int, v3: str, v2: str = '') -> None` is not assignable to `TDProtocol6` [bad-assignment]
+ERROR callables_kwargs.py:55:10-12: Missing argument `v1` in function `func1` [missing-argument]
+ERROR callables_kwargs.py:55:10-12: Missing argument `v3` in function `func1` [missing-argument]
+ERROR callables_kwargs.py:60:32-34: Unexpected keyword argument `v4` in function `func1` [unexpected-keyword]
+ERROR callables_kwargs.py:61:11-12: Expected argument `v1` to be passed by name in function `func1` [unexpected-positional-argument]
+ERROR callables_kwargs.py:61:11-12: Expected 0 positional arguments, got 3 in function `func1` [bad-argument-count]
+ERROR callables_kwargs.py:61:14-16: Expected argument `v3` to be passed by name in function `func1` [unexpected-positional-argument]
+ERROR callables_kwargs.py:67:11-20: Unpacked keyword argument `str` is not assignable to parameter `v1` with type `int` in function `func1` [bad-argument-type]
+ERROR callables_kwargs.py:72:17-22: Multiple values for argument `v1` in function `func1` [bad-keyword-argument]
+ERROR callables_kwargs.py:73:11-12: Argument `Literal[1]` is not assignable to parameter `v3` with type `str` in function `func2` [bad-argument-type]
+ERROR callables_kwargs.py:73:14-19: Multiple values for argument `v3` in function `func2` [bad-keyword-argument]
+ERROR callables_kwargs.py:74:17-22: Multiple values for argument `v1` in function `func2` [bad-keyword-argument]
+ERROR callables_kwargs.py:121:19-24: `(**kwargs: Unpack[TD2]) -> None` is not assignable to `TDProtocol3` [bad-assignment]
+ERROR callables_kwargs.py:122:19-24: `(**kwargs: Unpack[TD2]) -> None` is not assignable to `TDProtocol4` [bad-assignment]
+ERROR callables_kwargs.py:123:19-24: `(**kwargs: Unpack[TD2]) -> None` is not assignable to `TDProtocol5` [bad-assignment]
+ERROR callables_kwargs.py:131:20-41: TypedDict key 'v1' in **kwargs overlaps with parameter 'v1' [bad-function-definition]
+ERROR callables_kwargs.py:142:21-30: `Unpack` in **kwargs annotation must be used only with a `TypedDict` [invalid-annotation]
+ERROR callables_kwargs.py:154:19-24: `(*, v1: int, v3: str, v2: str = '') -> None` is not assignable to `TDProtocol6` [bad-assignment]
+ERROR callables_kwargs.py:156:19-24: `(*, v1: int, v3: str, v2: str = '') -> None` is not assignable to `TDProtocol8` [bad-assignment]
 """