Merge branch 'master' into wip-v1.0

.github/pr-title-labeler.yml

@@ -3,6 +3,7 @@
 # Format: type(scope): description or type!: description (breaking)
 
 add-missing-labels: true
+clear-prexisting: false
 include-commits: false
 include-title: true
 label-for-breaking-changes: breaking
@@ -21,7 +22,24 @@ label-mapping:
   infra: ["chore", "ci", "build", "infra"]
 
   # Integration partners - detected by scope
-  integration: ["anthropic", "chroma", "deepseek", "exa", "fireworks", "groq", "huggingface", "mistralai", "nomic", "ollama", "openai", "perplexity", "prompty", "qdrant", "xai"]
+  integration:
+    [
+      "anthropic",
+      "chroma",
+      "deepseek",
+      "exa",
+      "fireworks",
+      "groq",
+      "huggingface",
+      "mistralai",
+      "nomic",
+      "ollama",
+      "openai",
+      "perplexity",
+      "prompty",
+      "qdrant",
+      "xai",
+    ]
 
   # Releases
   release: ["release"]

libs/langchain_v1/langchain/agents/middleware/human_in_the_loop.py

@@ -149,7 +149,7 @@ class HumanInTheLoopMiddleware(AgentMiddleware):
         if not messages:
             return None
 
-        last_ai_msg = next((msg for msg in messages if isinstance(msg, AIMessage)), None)
+        last_ai_msg = next((msg for msg in reversed(messages) if isinstance(msg, AIMessage)), None)
         if not last_ai_msg or not last_ai_msg.tool_calls:
             return None
 

libs/langchain_v1/pyproject.toml

@@ -14,7 +14,7 @@ dependencies = [
 ]
 
 name = "langchain"
-version = "1.0.0a6"
+version = "1.0.0a7"
 description = "Building applications with LLMs through composability"
 readme = "README.md"
 

libs/langchain_v1/tests/unit_tests/agents/test_middleware_agent.py

@@ -438,6 +438,15 @@ def test_human_in_the_loop_middleware_single_tool_accept() -> None:
         assert result["messages"][0] == ai_message
         assert result["messages"][0].tool_calls == ai_message.tool_calls
 
+    state["messages"].append(
+        ToolMessage(content="Tool message", name="test_tool", tool_call_id="1")
+    )
+    state["messages"].append(AIMessage(content="test_tool called with result: Tool message"))
+
+    result = middleware.after_model(state)
+    # No interrupts needed
+    assert result is None
+
 
 def test_human_in_the_loop_middleware_single_tool_edit() -> None:
     """Test HumanInTheLoopMiddleware with single tool edit response."""

libs/langchain_v1/uv.lock

@@ -1,5 +1,5 @@
 version = 1
-revision = 3
+revision = 2
 requires-python = ">=3.10.0, <4.0.0"
 resolution-markers = [
     "python_full_version >= '3.13' and platform_python_implementation == 'PyPy'",
@@ -736,7 +736,7 @@ name = "exceptiongroup"
 version = "1.3.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "typing-extensions", marker = "python_full_version < '3.12'" },
+    { name = "typing-extensions", marker = "python_full_version < '3.11'" },
 ]
 sdist = { url = "https://files.pythonhosted.org/packages/0b/9f/a65090624ecf468cdca03533906e7c69ed7588582240cfe7cc9e770b50eb/exceptiongroup-1.3.0.tar.gz", hash = "sha256:b241f5885f560bc56a59ee63ca4c6a8bfa46ae4ad651af316d4e81817bb9fd88", size = 29749, upload-time = "2025-05-10T17:42:51.123Z" }
 wheels = [
@@ -1543,7 +1543,7 @@ wheels = [
 
 [[package]]
 name = "langchain"
-version = "1.0.0a6"
+version = "1.0.0a7"
 source = { editable = "." }
 dependencies = [
     { name = "langchain-core" },
@@ -1975,7 +1975,7 @@ dependencies = [
 [package.metadata]
 requires-dist = [
     { name = "langchain-core", editable = "../core" },
-    { name = "openai", specifier = ">=1.104.2,<2.0.0" },
+    { name = "openai", specifier = ">=1.104.2,<1.108.0" },
     { name = "tiktoken", specifier = ">=0.7.0,<1.0.0" },
 ]
 
@@ -2102,6 +2102,8 @@ test = [
 test-integration = [
     { name = "en-core-web-sm", url = "https://github.com/explosion/spacy-models/releases/download/en_core_web_sm-3.8.0/en_core_web_sm-3.8.0-py3-none-any.whl" },
     { name = "nltk", specifier = ">=3.9.1,<4.0.0" },
+    { name = "scipy", marker = "python_full_version == '3.12.*'", specifier = ">=1.7.0,<2.0.0" },
+    { name = "scipy", marker = "python_full_version >= '3.13'", specifier = ">=1.14.1,<2.0.0" },
     { name = "sentence-transformers", specifier = ">=3.0.1,<4.0.0" },
     { name = "spacy", specifier = ">=3.8.7,<4.0.0" },
     { name = "thinc", specifier = ">=8.3.6,<9.0.0" },