fix(cli): restrict member manifest copies to the dependency closure

Copying a manifest for every discovered member reached for paths that
.dockerignore may have removed from the build context, so a workspace with an
ignored member outside the closure failed with 'failed to compute cache key'.

uv only needs the target's manifest and those of its workspace dependencies to
resolve --package, so the closure is sufficient. It is also the set whose
sources are already copied and already validated against the ignore spec.

.github/dependabot.yml

@@ -21,16 +21,6 @@ updates:
     directory: "/libs/checkpoint"
     schedule:
       interval: "monthly"
-    versioning-strategy: increase
-    ignore:
-      - dependency-name: "langgraph"
-      - dependency-name: "langgraph-cli"
-      - dependency-name: "langgraph-sdk"
-      - dependency-name: "langgraph-prebuilt"
-      - dependency-name: "langgraph-checkpoint"
-      - dependency-name: "langgraph-checkpoint-postgres"
-      - dependency-name: "langgraph-checkpoint-sqlite"
-      - dependency-name: "langgraph-checkpoint-conformance"
     groups:
       minor-and-patch:
         patterns:
@@ -48,16 +38,6 @@ updates:
     directory: "/libs/checkpoint-conformance"
     schedule:
       interval: "monthly"
-    versioning-strategy: increase
-    ignore:
-      - dependency-name: "langgraph"
-      - dependency-name: "langgraph-cli"
-      - dependency-name: "langgraph-sdk"
-      - dependency-name: "langgraph-prebuilt"
-      - dependency-name: "langgraph-checkpoint"
-      - dependency-name: "langgraph-checkpoint-postgres"
-      - dependency-name: "langgraph-checkpoint-sqlite"
-      - dependency-name: "langgraph-checkpoint-conformance"
     groups:
       minor-and-patch:
         patterns:
@@ -75,16 +55,6 @@ updates:
     directory: "/libs/checkpoint-postgres"
     schedule:
       interval: "monthly"
-    versioning-strategy: increase
-    ignore:
-      - dependency-name: "langgraph"
-      - dependency-name: "langgraph-cli"
-      - dependency-name: "langgraph-sdk"
-      - dependency-name: "langgraph-prebuilt"
-      - dependency-name: "langgraph-checkpoint"
-      - dependency-name: "langgraph-checkpoint-postgres"
-      - dependency-name: "langgraph-checkpoint-sqlite"
-      - dependency-name: "langgraph-checkpoint-conformance"
     groups:
       minor-and-patch:
         patterns:
@@ -102,16 +72,6 @@ updates:
     directory: "/libs/checkpoint-sqlite"
     schedule:
       interval: "monthly"
-    versioning-strategy: increase
-    ignore:
-      - dependency-name: "langgraph"
-      - dependency-name: "langgraph-cli"
-      - dependency-name: "langgraph-sdk"
-      - dependency-name: "langgraph-prebuilt"
-      - dependency-name: "langgraph-checkpoint"
-      - dependency-name: "langgraph-checkpoint-postgres"
-      - dependency-name: "langgraph-checkpoint-sqlite"
-      - dependency-name: "langgraph-checkpoint-conformance"
     groups:
       minor-and-patch:
         patterns:
@@ -129,16 +89,6 @@ updates:
     directory: "/libs/cli"
     schedule:
       interval: "monthly"
-    versioning-strategy: increase
-    ignore:
-      - dependency-name: "langgraph"
-      - dependency-name: "langgraph-cli"
-      - dependency-name: "langgraph-sdk"
-      - dependency-name: "langgraph-prebuilt"
-      - dependency-name: "langgraph-checkpoint"
-      - dependency-name: "langgraph-checkpoint-postgres"
-      - dependency-name: "langgraph-checkpoint-sqlite"
-      - dependency-name: "langgraph-checkpoint-conformance"
     groups:
       minor-and-patch:
         patterns:
@@ -156,16 +106,6 @@ updates:
     directory: "/libs/langgraph"
     schedule:
       interval: "monthly"
-    versioning-strategy: increase
-    ignore:
-      - dependency-name: "langgraph"
-      - dependency-name: "langgraph-cli"
-      - dependency-name: "langgraph-sdk"
-      - dependency-name: "langgraph-prebuilt"
-      - dependency-name: "langgraph-checkpoint"
-      - dependency-name: "langgraph-checkpoint-postgres"
-      - dependency-name: "langgraph-checkpoint-sqlite"
-      - dependency-name: "langgraph-checkpoint-conformance"
     groups:
       minor-and-patch:
         patterns:
@@ -183,16 +123,6 @@ updates:
     directory: "/libs/prebuilt"
     schedule:
       interval: "monthly"
-    versioning-strategy: increase
-    ignore:
-      - dependency-name: "langgraph"
-      - dependency-name: "langgraph-cli"
-      - dependency-name: "langgraph-sdk"
-      - dependency-name: "langgraph-prebuilt"
-      - dependency-name: "langgraph-checkpoint"
-      - dependency-name: "langgraph-checkpoint-postgres"
-      - dependency-name: "langgraph-checkpoint-sqlite"
-      - dependency-name: "langgraph-checkpoint-conformance"
     groups:
       minor-and-patch:
         patterns:
@@ -210,16 +140,6 @@ updates:
     directory: "/libs/sdk-py"
     schedule:
       interval: "monthly"
-    versioning-strategy: increase
-    ignore:
-      - dependency-name: "langgraph"
-      - dependency-name: "langgraph-cli"
-      - dependency-name: "langgraph-sdk"
-      - dependency-name: "langgraph-prebuilt"
-      - dependency-name: "langgraph-checkpoint"
-      - dependency-name: "langgraph-checkpoint-postgres"
-      - dependency-name: "langgraph-checkpoint-sqlite"
-      - dependency-name: "langgraph-checkpoint-conformance"
     groups:
       minor-and-patch:
         patterns:
@@ -266,38 +186,3 @@ updates:
           - "*"
         update-types:
           - "major"
-
-  # CI builds this maintained integration image and Compose stack.
-  - package-ecosystem: "docker"
-    directory: "/libs/sdk-py/integration"
-    schedule:
-      interval: "monthly"
-    groups:
-      minor-and-patch:
-        patterns:
-          - "*"
-        update-types:
-          - "minor"
-          - "patch"
-      major:
-        patterns:
-          - "*"
-        update-types:
-          - "major"
-
-  - package-ecosystem: "docker-compose"
-    directory: "/libs/sdk-py/integration"
-    schedule:
-      interval: "monthly"
-    groups:
-      minor-and-patch:
-        patterns:
-          - "*"
-        update-types:
-          - "minor"
-          - "patch"
-      major:
-        patterns:
-          - "*"
-        update-types:
-          - "major"

.gitignore

@@ -77,10 +77,6 @@ __pypackages__/
 # Environments
 .env
 .envrc
-*.crt
-*.key
-*.pem
-credentials.json
 .venv
 .venvs
 env/
@@ -102,7 +98,6 @@ dmypy.json
 
 .vercel
 .turbo
-node_modules/
 .editorconfig
 .scratch
 .worktrees/

libs/cli/langgraph_cli/uv_lock.py

@@ -970,20 +970,21 @@ def python_config_to_docker_uv_lock(
             f"{uv_export_project_dir}/uv.lock",
         )
     )
-    for package_root in sorted(
-        plan.all_workspace_roots,
-        key=lambda root: root.as_posix(),
-    ):
-        if package_root == plan.project_root:
-            continue
-        package_relative_path = pathlib.PurePosixPath(
-            package_root.relative_to(plan.project_root).as_posix()
+    # `uv export --package` resolves a member by reading that member's own
+    # manifest, so the root manifest names it but is not enough to find it. Only
+    # the manifests are copied; member sources arrive later, per member.
+    #
+    # Restricted to the closure rather than every member. Members outside it are
+    # not needed for the export, and copying them would reach for paths that
+    # `.dockerignore` may have removed from the build context.
+    for member_root in sorted(set(plan.container_roots) - {plan.project_root}):
+        member_relative = pathlib.PurePosixPath(
+            member_root.relative_to(plan.project_root).as_posix()
         )
-        package_pyproject_path = package_relative_path / "pyproject.toml"
         docker_plan.add_raw(
             copy_from_project_root(
-                package_pyproject_path,
-                f"{uv_export_project_dir}/{package_pyproject_path.as_posix()}",
+                member_relative / "pyproject.toml",
+                f"{uv_export_project_dir}/{member_relative}/pyproject.toml",
             )
         )
     docker_plan.add_instruction("WORKDIR", uv_export_project_dir)

libs/cli/tests/unit_tests/test_config.py

@@ -1403,19 +1403,6 @@ def test_config_to_docker_uv_lock():
             "COPY --from=uv-workspace-root uv.lock /tmp/uv_export/project/uv.lock"
             in docker
         )
-        workspace_pyprojects = [
-            "apps/agent/pyproject.toml",
-            "libs/extra/pyproject.toml",
-            "libs/shared/pyproject.toml",
-        ]
-        export_instruction = "RUN uv export --package agent"
-        for pyproject_path in workspace_pyprojects:
-            copy_instruction = (
-                "COPY --from=uv-workspace-root "
-                f"{pyproject_path} /tmp/uv_export/project/{pyproject_path}"
-            )
-            assert copy_instruction in docker
-            assert docker.index(copy_instruction) < docker.index(export_instruction)
         assert additional_contexts == {"uv-workspace-root": str(project_root.resolve())}
 
         assert (

libs/cli/uv-examples/monorepo/uv.lock

@@ -266,20 +266,20 @@ wheels = [
 
 [[package]]
 name = "langgraph-checkpoint"
-version = "4.2.0"
+version = "4.0.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "langchain-core" },
     { name = "ormsgpack" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/dc/e1/089c4c9e0a2fec7f883f82ae8e6a727138d50074cfeb6644bc2d13b1019b/langgraph_checkpoint-4.2.0.tar.gz", hash = "sha256:51a593b6bee684b0818e5d6e58e28ab340c6db7794575056ce7bd1b746a84ed7", size = 180239, upload-time = "2026-08-07T20:05:03.756Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/b1/44/a8df45d1e8b4637e29789fa8bae1db022c953cc7ac80093cfc52e923547e/langgraph_checkpoint-4.0.1.tar.gz", hash = "sha256:b433123735df11ade28829e40ce25b9be614930cd50245ff2af60629234befd9", size = 158135, upload-time = "2026-02-27T21:06:16.092Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/05/71/3b475f09bd57d3a5649792c66353312b4432afd843f301739dfcebd157f0/langgraph_checkpoint-4.2.0-py3-none-any.whl", hash = "sha256:0547fd228935a0b758865de3a3d6d7a2537c308895d0f9ab092ce9151b5da942", size = 56833, upload-time = "2026-08-07T20:05:02.655Z" },
+    { url = "https://files.pythonhosted.org/packages/65/4c/09a4a0c42f5d2fc38d6c4d67884788eff7fd2cfdf367fdf7033de908b4c0/langgraph_checkpoint-4.0.1-py3-none-any.whl", hash = "sha256:e3adcd7a0e0166f3b48b8cf508ce0ea366e7420b5a73aa81289888727769b034", size = 50453, upload-time = "2026-02-27T21:06:14.293Z" },
 ]
 
 [[package]]
 name = "langgraph-checkpoint-postgres"
-version = "3.1.1"
+version = "3.0.5"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "langgraph-checkpoint" },
@@ -287,9 +287,9 @@ dependencies = [
     { name = "psycopg" },
     { name = "psycopg-pool" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/06/92/1e8959f8cd1b56e672fde3227f6fd642be85af6c5fd662d73921074aa39d/langgraph_checkpoint_postgres-3.1.1.tar.gz", hash = "sha256:d320e147ddad8c374cd546df0b52b532dd54d0541dd9fd23fc738cbd5de76f41", size = 150413, upload-time = "2026-07-30T19:15:39.014Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/95/7a/8f439966643d32111248a225e6cb33a182d07c90de780c4dbfc1e0377832/langgraph_checkpoint_postgres-3.0.5.tar.gz", hash = "sha256:a8fd7278a63f4f849b5cbc7884a15ca8f41e7d5f7467d0a66b31e8c24492f7eb", size = 127856, upload-time = "2026-03-18T21:25:29.785Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/03/32/ba457698a48a0e18d786caa770033067049fbe36d6846f8e50f13b594b51/langgraph_checkpoint_postgres-3.1.1-py3-none-any.whl", hash = "sha256:6e353aecd8150de144fef8e51a49076f58b7d6830d4cf51392b7ad4d79832ba7", size = 50778, upload-time = "2026-07-30T19:15:37.405Z" },
+    { url = "https://files.pythonhosted.org/packages/e8/87/b0f98b33a67204bca9d5619bcd9574222f6b025cf3c125eedcec9a50ecbc/langgraph_checkpoint_postgres-3.0.5-py3-none-any.whl", hash = "sha256:86d7040a88fd70087eaafb72251d796696a0a2d856168f5c11ef620771411552", size = 42907, upload-time = "2026-03-18T21:25:28.75Z" },
 ]
 
 [[package]]

libs/langgraph/langgraph/pregel/_utils.py

@@ -1,10 +1,11 @@
 from __future__ import annotations
 
-import dis
+import ast
+import inspect
 import re
+import textwrap
 from collections.abc import Callable, Sequence
 from functools import partial
-from types import CodeType, FunctionType
 from typing import Any
 
 from langchain_core.runnables import (
@@ -16,6 +17,7 @@ from langchain_core.runnables import (
 from langchain_core.runnables.base import RunnableBindingBase
 from langchain_core.runnables.config import run_in_executor
 from langgraph.checkpoint.base import ChannelVersions
+from typing_extensions import override
 
 from langgraph._internal._runnable import RunnableCallable, RunnableSeq
 from langgraph._internal._timeout import sync_timeout_unsupported
@@ -135,87 +137,155 @@ def validate_timeout_supported(runnable: Runnable, *, name: str) -> None:
         raise sync_timeout_unsupported(name)
 
 
-# Values treated as dead ends when deciding whether to walk a function's
-# bytecode. A container can hold a graph, but `find_subgraph_pregel` does not
-# look inside one, so skipping it costs nothing while that holds. Matched by
-# exact type, since a subclass of a builtin can carry attributes.
-_LEAF_TYPES = frozenset(
-    {
-        int,
-        float,
-        complex,
-        bool,
-        str,
-        bytes,
-        bytearray,
-        list,
-        tuple,
-        dict,
-        set,
-        frozenset,
-        type(None),
-    }
-)
-
-
 def get_function_nonlocals(func: Callable) -> list[Any]:
-    """Get the values a function reaches from outside its own scope.
+    """Get the nonlocal variables accessed by a function.
 
     Args:
         func: The function to check.
 
     Returns:
-        Every captured cell value, the globals the function names, and each
-        value along an attribute path it loads. Over-approximates: a value can
-        come back without the function reaching it at runtime.
+        List[Any]: The nonlocal variables accessed by the function.
     """
-    func = getattr(func, "__func__", func)  # bound method -> function
-    wrapped = getattr(func, "__wrapped__", None)
-    if callable(wrapped):
-        func = getattr(wrapped, "__func__", wrapped)
-    if not isinstance(func, FunctionType):
+    try:
+        code = inspect.getsource(func)
+        tree = ast.parse(textwrap.dedent(code))
+        visitor = FunctionNonLocals()
+        visitor.visit(tree)
+        values: list[Any] = []
+        closure = (
+            inspect.getclosurevars(func.__wrapped__)
+            if hasattr(func, "__wrapped__") and callable(func.__wrapped__)
+            else inspect.getclosurevars(func)
+        )
+        candidates = {**closure.globals, **closure.nonlocals}
+        for k, v in candidates.items():
+            if k in visitor.nonlocals:
+                values.append(v)
+            for kk in visitor.nonlocals:
+                if "." in kk and kk.startswith(k):
+                    vv = v
+                    for part in kk.split(".")[1:]:
+                        if vv is None:
+                            break
+                        else:
+                            try:
+                                vv = getattr(vv, part)
+                            except AttributeError:
+                                break
+                    else:
+                        values.append(vv)
+    except (SyntaxError, TypeError, OSError, SystemError):
         return []
-    code = func.__code__
 
-    cells: dict[str, Any] = {}
-    for name, cell in zip(code.co_freevars, func.__closure__ or ()):
-        try:
-            cells[name] = cell.cell_contents
-        except ValueError:
-            continue  # empty cell: a recursive def not yet bound
-
-    # Every captured value counts, referenced or not: over-declaring costs an
-    # introspection entry, under-declaring drops the subgraph's checkpoints and
-    # stream events. Checking each cell against the bytecode would cost more and
-    # only trade the cheap error for the expensive one.
-    values: list[Any] = list(cells.values())
-    global_ns = func.__globals__
-    globals_ = {name: global_ns[name] for name in code.co_names if name in global_ns}
-    if all(type(v) in _LEAF_TYPES for v in (*cells.values(), *globals_.values())):
-        return values
-
-    # Nested code objects hold the references made by inner defs, lambdas and
-    # comprehensions, which resolve against the namespaces gathered above.
-    codes = [code]
-    for c in codes:
-        codes.extend(k for k in c.co_consts if isinstance(k, CodeType))
-        value: Any = None
-        for instruction in dis.get_instructions(c):
-            opname = instruction.opname
-            if opname == "LOAD_GLOBAL":
-                value = globals_.get(instruction.argval)
-            elif opname == "LOAD_DEREF":
-                value = cells.get(instruction.argval)
-            elif opname in ("LOAD_ATTR", "LOAD_METHOD"):
-                value = getattr(value, instruction.argval, None)
-            else:
-                value = None  # anything else ends the chain: `a, b.c` is not `a.c`
-                continue
-            if value is not None:
-                values.append(value)
     return values
 
 
+class FunctionNonLocals(ast.NodeVisitor):
+    """Get the nonlocal variables accessed of a function."""
+
+    def __init__(self) -> None:
+        self.nonlocals: set[str] = set()
+
+    @override
+    def visit_FunctionDef(self, node: ast.FunctionDef) -> Any:
+        """Visit a function definition.
+
+        Args:
+            node: The node to visit.
+
+        Returns:
+            Any: The result of the visit.
+        """
+        visitor = NonLocals()
+        visitor.visit(node)
+        self.nonlocals.update(visitor.loads - visitor.stores)
+
+    @override
+    def visit_AsyncFunctionDef(self, node: ast.AsyncFunctionDef) -> Any:
+        """Visit an async function definition.
+
+        Args:
+            node: The node to visit.
+
+        Returns:
+            Any: The result of the visit.
+        """
+        visitor = NonLocals()
+        visitor.visit(node)
+        self.nonlocals.update(visitor.loads - visitor.stores)
+
+    @override
+    def visit_Lambda(self, node: ast.Lambda) -> Any:
+        """Visit a lambda function.
+
+        Args:
+            node: The node to visit.
+
+        Returns:
+            Any: The result of the visit.
+        """
+        visitor = NonLocals()
+        visitor.visit(node)
+        self.nonlocals.update(visitor.loads - visitor.stores)
+
+
+class NonLocals(ast.NodeVisitor):
+    """Get nonlocal variables accessed."""
+
+    def __init__(self) -> None:
+        self.loads: set[str] = set()
+        self.stores: set[str] = set()
+
+    @override
+    def visit_Name(self, node: ast.Name) -> Any:
+        """Visit a name node.
+
+        Args:
+            node: The node to visit.
+
+        Returns:
+            Any: The result of the visit.
+        """
+        if isinstance(node.ctx, ast.Load):
+            self.loads.add(node.id)
+        elif isinstance(node.ctx, ast.Store):
+            self.stores.add(node.id)
+
+    @override
+    def visit_Attribute(self, node: ast.Attribute) -> Any:
+        """Visit an attribute node.
+
+        Args:
+            node: The node to visit.
+
+        Returns:
+            Any: The result of the visit.
+        """
+        if isinstance(node.ctx, ast.Load):
+            parent = node.value
+            attr_expr = node.attr
+            while isinstance(parent, ast.Attribute):
+                attr_expr = parent.attr + "." + attr_expr
+                parent = parent.value
+            if isinstance(parent, ast.Name):
+                self.loads.add(parent.id + "." + attr_expr)
+                self.loads.discard(parent.id)
+            elif isinstance(parent, ast.Call):
+                if isinstance(parent.func, ast.Name):
+                    self.loads.add(parent.func.id)
+                else:
+                    parent = parent.func
+                    attr_expr = ""
+                    while isinstance(parent, ast.Attribute):
+                        if attr_expr:
+                            attr_expr = parent.attr + "." + attr_expr
+                        else:
+                            attr_expr = parent.attr
+                        parent = parent.value
+                    if isinstance(parent, ast.Name):
+                        self.loads.add(parent.id + "." + attr_expr)
+
+
 def is_xxh3_128_hexdigest(value: str) -> bool:
     """Check if the given string matches the format of xxh3_128_hexdigest."""
     return bool(re.fullmatch(r"[0-9a-f]{32}", value))

libs/langgraph/tests/test_subgraph_detection.py

@@ -1,286 +0,0 @@
-"""Tests for subgraph auto-detection (`pregel/_utils.py`).
-
-Detection failing is silent — the graph still runs, only introspection goes
-quiet — so every shape a node can hold a graph in is pinned here. The expected
-values are what the source-parsing implementation this replaced produced for
-the same shapes, except for `sourceless`, whose source it could not read,
-`empty_closure_cell`, on which it raised, and `unreachable_attribute_chain`,
-where it reported a graph that dropped code could never invoke.
-"""
-
-import functools
-import operator
-from typing import Annotated, Any
-
-import pytest
-from typing_extensions import TypedDict
-
-from langgraph.graph import END, START, StateGraph
-from langgraph.pregel._utils import get_function_nonlocals
-
-
-class State(TypedDict):
-    log: Annotated[list, operator.add]
-
-
-def _leaf(tag: str) -> Any:
-    """Return a compiled graph that reports itself as `tag`."""
-    builder = StateGraph(State)
-    builder.add_node(tag, lambda s: {"log": [tag]})
-    builder.add_edge(START, tag)
-    builder.add_edge(tag, END)
-    compiled = builder.compile()
-    compiled.name = tag
-    return compiled
-
-
-def _detect(node: Any) -> str | None:
-    """Return the name of the subgraph detected for `node`, or None."""
-    builder = StateGraph(State)
-    builder.add_node("n", node)
-    builder.add_edge(START, "n")
-    builder.add_edge("n", END)
-    subgraphs = builder.compile().nodes["n"].subgraphs
-    return getattr(subgraphs[0], "name", "?") if subgraphs else None
-
-
-class _Box:
-    def __init__(self, payload: Any) -> None:
-        self.payload = payload
-
-
-class _ListSubclass(list):
-    pass
-
-
-class _MethodHolder:
-    def __init__(self) -> None:
-        self.graph = _leaf("via_self")
-
-    def as_node(self, state: State) -> Any:
-        return self.graph.invoke(state)
-
-
-MODULE_GRAPH = _leaf("module_global")
-CHAIN = _Box(_Box(_leaf("attr_chain")))
-GRAPH_IN_PLAIN_LIST = [_leaf("in_list")]
-METHOD_HOLDER = _MethodHolder()
-
-
-def closure_capture() -> Any:
-    sub = _leaf("closure")
-
-    def node(state: State) -> Any:
-        return sub.invoke(state)
-
-    return node
-
-
-def module_global() -> Any:
-    def node(state: State) -> Any:
-        return MODULE_GRAPH.invoke(state)
-
-    return node
-
-
-def attribute_chain() -> Any:
-    def node(state: State) -> Any:
-        return CHAIN.payload.payload.invoke(state)
-
-    return node
-
-
-def nested_def_captured_attribute() -> Any:
-    """A chain on a captured holder, named only inside a nested code object.
-
-    The captured value is the holder, not the graph, so the chain itself has to
-    be recovered from the nested scope.
-    """
-    holder = _Box(_leaf("nested_captured"))
-
-    def node(state: State) -> Any:
-        def inner() -> Any:
-            return holder.payload.invoke(state)
-
-        return inner()
-
-    return node
-
-
-def unreachable_branch() -> Any:
-    """A captured graph referenced only from code the compiler removes."""
-    sub = _leaf("unreachable")
-
-    def node(state: State) -> Any:
-        if False:
-            sub.invoke(state)
-        return {"log": []}
-
-    return node
-
-
-def unreachable_attribute_chain() -> Any:
-    """A graph named only along an attribute path the compiler dropped.
-
-    The closure keeps `holder`, but the `.payload` load is gone. The source
-    parser reported this one; dropped code cannot invoke anything, so that was
-    a phantom rather than a detection.
-    """
-    holder = _Box(_leaf("unreachable_attr"))
-
-    def node(state: State) -> Any:
-        if False:
-            holder.payload.invoke(state)
-        return {"log": []}
-
-    return node
-
-
-def wrapper_referencing_nothing() -> Any:
-    """A wrapper whose own scope holds nothing, so only `__wrapped__` leads on.
-
-    `functools.wraps` would leave the wrapper closing over the inner function;
-    setting the attribute by hand does not.
-    """
-    sub = _leaf("via_wrapped")
-
-    def inner(state: State) -> Any:
-        return sub.invoke(state)
-
-    def wrapper(state: State) -> Any:
-        return {"log": []}
-
-    wrapper.__wrapped__ = inner
-    return wrapper
-
-
-def captured_list_subclass() -> Any:
-    """A `list` subclass is not a leaf: it can carry a graph as an attribute."""
-    holder = _ListSubclass()
-    holder.payload = _leaf("list_subclass")
-
-    def node(state: State) -> Any:
-        return holder.payload.invoke(state)
-
-    return node
-
-
-def empty_closure_cell() -> Any:
-    """An unassigned closure variable leaves a cell that cannot be read."""
-    sub = _leaf("beside_empty_cell")
-
-    def node(state: State) -> Any:
-        return unassigned, sub.invoke(state)
-
-    return node
-    unassigned = 1  # never runs, so the cell it creates is never filled
-
-
-def sourceless() -> Any:
-    """A node compiled without a source file, which `getsource` could not read."""
-    namespace: dict[str, Any] = {"SOURCELESS": _leaf("sourceless")}
-    exec(
-        compile(
-            "def node(state):\n    return SOURCELESS.invoke(state)", "<test>", "exec"
-        ),
-        namespace,
-    )
-    return namespace["node"]
-
-
-async def _async_node(state: State) -> Any:
-    return await MODULE_GRAPH.ainvoke(state)
-
-
-def async_node() -> Any:
-    return _async_node
-
-
-def no_subgraph() -> Any:
-    """Nothing but leaf values in reach, so the bytecode walk is skipped."""
-
-    def node(state: State) -> Any:
-        return {"log": [len("abc") + 1]}
-
-    return node
-
-
-def recombined_names() -> Any:
-    """Loads `CHAIN.payload` and `local.payload`, never `CHAIN.payload.payload`."""
-
-    def node(state: State) -> Any:
-        local = _Box("not a graph")
-        return {"log": [CHAIN.payload, local.payload]}
-
-    return node
-
-
-def broken_attribute_chain() -> Any:
-    holder = _Box("a string, so `.payload.missing` cannot resolve")
-
-    def node(state: State) -> Any:
-        return holder.payload.missing.invoke(state)
-
-    return node
-
-
-def nested_def_global() -> Any:
-    """A global named only in a nested code object: out of reach, as before."""
-
-    def node(state: State) -> Any:
-        def inner() -> Any:
-            return MODULE_GRAPH.invoke(state)
-
-        return inner()
-
-    return node
-
-
-def graph_in_plain_list() -> Any:
-    def node(state: State) -> Any:
-        return GRAPH_IN_PLAIN_LIST[0].invoke(state)
-
-    return node
-
-
-def bound_method_self() -> Any:
-    return METHOD_HOLDER.as_node
-
-
-@pytest.mark.parametrize(
-    ("factory", "expected"),
-    [
-        (closure_capture, "closure"),
-        (module_global, "module_global"),
-        (attribute_chain, "attr_chain"),
-        (nested_def_captured_attribute, "nested_captured"),
-        (unreachable_branch, "unreachable"),
-        (wrapper_referencing_nothing, "via_wrapped"),
-        (captured_list_subclass, "list_subclass"),
-        (empty_closure_cell, "beside_empty_cell"),
-        (sourceless, "sourceless"),
-        (async_node, "module_global"),
-        # Shapes no reference chain reaches: a subscript, an instance attribute
-        # of `self`, a global named only in a nested scope, and an attribute
-        # path the compiler dropped.
-        (no_subgraph, None),
-        (recombined_names, None),
-        (broken_attribute_chain, None),
-        (nested_def_global, None),
-        (graph_in_plain_list, None),
-        (bound_method_self, None),
-        (unreachable_attribute_chain, None),
-    ],
-    ids=lambda value: value.__name__ if callable(value) else str(value),
-)
-def test_subgraph_detection(factory: Any, expected: str | None) -> None:
-    assert _detect(factory()) == expected
-
-
-@pytest.mark.parametrize(
-    "candidate",
-    [functools.partial(lambda state, extra: {"log": [extra]}, extra="x"), len],
-    ids=["partial", "builtin"],
-)
-def test_callables_without_a_code_object_are_handled(candidate: Any) -> None:
-    assert get_function_nonlocals(candidate) == []

libs/sdk-py/langgraph_sdk/__init__.py

@@ -1,15 +1,8 @@
 from langgraph_sdk.auth import Auth
 from langgraph_sdk.client import get_client, get_sync_client
 from langgraph_sdk.encryption import Encryption
-from langgraph_sdk.encryption.types import DecryptResult, EncryptionContext
+from langgraph_sdk.encryption.types import EncryptionContext
 
-__version__ = "0.4.3"
+__version__ = "0.4.2"
 
-__all__ = [
-    "Auth",
-    "DecryptResult",
-    "Encryption",
-    "EncryptionContext",
-    "get_client",
-    "get_sync_client",
-]
+__all__ = ["Auth", "Encryption", "EncryptionContext", "get_client", "get_sync_client"]

libs/sdk-py/langgraph_sdk/encryption/__init__.py

@@ -18,9 +18,6 @@ import warnings
 
 from langgraph_sdk.encryption import types
 
-_BlobDecryptorT = typing.TypeVar("_BlobDecryptorT", bound=types.BlobDecryptor)
-_JsonDecryptorT = typing.TypeVar("_JsonDecryptorT", bound=types.JsonDecryptor)
-
 
 class LangGraphBetaWarning(UserWarning):
     """Warning for beta features in LangGraph SDK."""
@@ -144,7 +141,7 @@ class _DecryptDecorators:
     def __init__(self, parent: Encryption):
         self._parent = parent
 
-    def blob(self, fn: _BlobDecryptorT) -> _BlobDecryptorT:
+    def blob(self, fn: types.BlobDecryptor) -> types.BlobDecryptor:
         """Register a blob decryption handler.
 
         The handler will be called to decrypt opaque data like checkpoint blobs.
@@ -152,9 +149,7 @@ class _DecryptDecorators:
         Example:
             ```python
             @encryption.decrypt.blob
-            async def decrypt_blob(
-                ctx: EncryptionContext, blob: bytes
-            ) -> bytes | DecryptResult[bytes]:
+            async def decrypt_blob(ctx: EncryptionContext, blob: bytes) -> bytes:
                 # Decrypt the blob using your encryption service
                 return decrypted_blob
             ```
@@ -175,15 +170,13 @@ class _DecryptDecorators:
         self._parent._blob_decryptor = fn
         return fn
 
-    def json(self, fn: _JsonDecryptorT) -> _JsonDecryptorT:
+    def json(self, fn: types.JsonDecryptor) -> types.JsonDecryptor:
         """Register the JSON decryption handler.
 
         Example:
             ```python
             @encryption.decrypt.json
-            async def decrypt_json(
-                ctx: EncryptionContext, data: dict
-            ) -> dict | DecryptResult[dict]:
+            async def decrypt_json(ctx: EncryptionContext, data: dict) -> dict:
                 # Decrypt the data
                 return decrypt_data(data)
             ```
@@ -376,7 +369,7 @@ class Encryption:
     """Reference to encryption type definitions.
 
     Provides access to all type definitions used in the encryption system,
-    including EncryptionContext, DecryptResult, BlobEncryptor, BlobDecryptor,
+    including EncryptionContext, BlobEncryptor, BlobDecryptor,
     JsonEncryptor, and JsonDecryptor.
     """
 

libs/sdk-py/langgraph_sdk/encryption/types.py

@@ -9,30 +9,10 @@ from __future__ import annotations
 
 import typing
 from collections.abc import Awaitable, Callable
-from dataclasses import dataclass
 
 Json = dict[str, typing.Any]
 """JSON-serializable dictionary type for structured data encryption."""
 
-T = typing.TypeVar("T")
-
-
-@dataclass(frozen=True, slots=True)
-class DecryptResult(typing.Generic[T]):
-    """Decrypted data and optional replacement ciphertext.
-
-    Return this from a decrypt handler when encrypted data should be replaced,
-    such as after rotating its encryption key. Returning plaintext directly
-    remains supported when no replacement is needed.
-
-    Attributes:
-        plaintext: Decrypted data returned to the caller
-        replacement: New encrypted data to persist in place of the input
-    """
-
-    plaintext: T
-    replacement: T | None = None
-
 
 class EncryptionContext:
     """Context passed to encryption/decryption handlers.
@@ -77,9 +57,7 @@ Returns:
     Awaitable that resolves to encrypted bytes
 """
 
-BlobDecryptor = Callable[
-    [EncryptionContext, bytes], Awaitable[bytes | DecryptResult[bytes]]
-]
+BlobDecryptor = Callable[[EncryptionContext, bytes], Awaitable[bytes]]
 """Handler for decrypting opaque blob data like checkpoints.
 
 Note: Must be an async function. Decryption typically involves I/O operations
@@ -90,8 +68,7 @@ Args:
     blob: The encrypted bytes to decrypt
 
 Returns:
-    Awaitable that resolves to decrypted bytes, or a DecryptResult containing
-    decrypted bytes and replacement ciphertext
+    Awaitable that resolves to decrypted bytes
 """
 
 JsonEncryptor = Callable[[EncryptionContext, Json], Awaitable[Json]]
@@ -124,9 +101,7 @@ Returns:
     Awaitable that resolves to encrypted JSON dictionary
 """
 
-JsonDecryptor = Callable[
-    [EncryptionContext, Json], Awaitable[Json | DecryptResult[Json]]
-]
+JsonDecryptor = Callable[[EncryptionContext, Json], Awaitable[Json]]
 """Handler for decrypting structured JSON data.
 
 Note: Must be an async function. Decryption typically involves I/O operations
@@ -140,8 +115,7 @@ Args:
     data: The encrypted JSON dictionary
 
 Returns:
-    Awaitable that resolves to a decrypted JSON dictionary, or a DecryptResult
-    containing decrypted JSON and replacement ciphertext
+    Awaitable that resolves to decrypted JSON dictionary
 """
 
 if typing.TYPE_CHECKING:

libs/sdk-py/tests/test_encryption.py

@@ -1,40 +1,8 @@
-from collections.abc import Awaitable, Callable
-
 import pytest
 
-from langgraph_sdk import DecryptResult, EncryptionContext
 from langgraph_sdk.encryption import DuplicateHandlerError, Encryption
 
 
-def test_decrypt_result():
-    result = DecryptResult(plaintext=b"plain", replacement=b"rotated")
-
-    assert result.plaintext == b"plain"
-    assert result.replacement == b"rotated"
-    assert DecryptResult(plaintext={"plain": True}).replacement is None
-
-
-def test_decrypt_decorators_preserve_return_types():
-    encryption = Encryption()
-
-    @encryption.decrypt.blob
-    async def blob_dec(_ctx: EncryptionContext, data: bytes) -> bytes:
-        return data
-
-    @encryption.decrypt.json
-    async def json_dec(
-        _ctx: EncryptionContext, data: dict[str, object]
-    ) -> dict[str, object]:
-        return data
-
-    blob_handler: Callable[[EncryptionContext, bytes], Awaitable[bytes]] = blob_dec
-    json_handler: Callable[
-        [EncryptionContext, dict[str, object]], Awaitable[dict[str, object]]
-    ] = json_dec
-    assert blob_handler is blob_dec
-    assert json_handler is json_dec
-
-
 class TestHandlerValidation:
     """Test duplicate handler and signature validation."""