fix(infra): use langchain_v1 for dev container deps (#34534)

.devcontainer/devcontainer.json

@@ -26,7 +26,7 @@
   // Use 'forwardPorts' to make a list of ports inside the container available locally.
   // "forwardPorts": [],
   // Run commands after the container is created
-  "postCreateCommand": "uv sync && echo 'LangChain (Python) dev environment ready!'",
+  "postCreateCommand": "cd libs/langchain_v1 && uv sync && echo 'LangChain (Python) dev environment ready!'",
   // Configure tool-specific properties.
   "customizations": {
     "vscode": {
@@ -42,7 +42,7 @@
         "GitHub.copilot-chat"
       ],
       "settings": {
-        "python.defaultInterpreterPath": ".venv/bin/python",
+        "python.defaultInterpreterPath": "libs/langchain_v1/.venv/bin/python",
         "python.formatting.provider": "none",
         "[python]": {
           "editor.formatOnSave": true,

libs/langchain/dev.Dockerfile

@@ -28,7 +28,9 @@ COPY . .
 RUN mkdir -p $UV_CACHE_DIR && chmod 755 $UV_CACHE_DIR
 
 # Install dependencies using uv (let uv handle the venv creation)
+WORKDIR /workspaces/langchain/libs/langchain_v1
 RUN uv sync --dev
+WORKDIR /workspaces/langchain
 
 # Create a non-root user and set up proper permissions
 RUN useradd -m -s /bin/bash -u 1000 vscode && \
@@ -38,4 +40,4 @@ USER vscode
 
 # Set shell for interactive use
 SHELL ["/bin/bash", "-c"]
-CMD ["/bin/bash"]
+CMD ["/bin/bash"]

libs/langchain_v1/uv.lock

@@ -2424,7 +2424,7 @@ test-integration = [
     { 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", marker = "python_full_version < '3.14'", specifier = ">=3.0.1,<4.0.0" },
+    { name = "sentence-transformers", specifier = ">=3.0.1,<4.0.0" },
     { name = "spacy", marker = "python_full_version < '3.14'", specifier = ">=3.8.7,<4.0.0" },
     { name = "thinc", specifier = ">=8.3.6,<9.0.0" },
     { name = "tiktoken", specifier = ">=0.8.0,<1.0.0" },