🐛 Bug Report: Requirements for Langchain example

Which component is this bug for?

Langchain Instrumentation

📜 Description

When using the default pyproject.toml generated by

langchain app new ...

Langchain instrumentation does not occur.

👟 Reproduction steps

'''
langchain app new chat
'''

Results in the following pyproject.toml

[tool.poetry]
name = "chat"
version = "0.1.0"
description = ""
authors = ["Your Name <you@example.com>"]
readme = "README.md"
packages = [
    { include = "app" },
]

[tool.poetry.dependencies]
python = "^3.11"
uvicorn = "^0.23.2"
langserve = {extras = ["server"], version = ">=0.0.30"}
pydantic = "<2"


[tool.poetry.group.dev.dependencies]
langchain-cli = ">=0.0.15"

[build-system]
requires = ["poetry-core"]
build-backend = "poetry.core.masonry.api"

👍 Expected behavior

The docs should describe what else needs to be added to show full instrumentation for a langchain example.

👎 Actual Behavior with Screenshots

This results in only the LLM being traced.

🤖 Python Version

3.11

📃 Provide any additional context for the Bug.

It looks like the following modules need to be added to get the following trace.

langchain
opentelemetry-instrumentation-fastapi

In the langchain example described here - https://github.com/traceloop/openllmetry/pull/1043 langchain is explicitly added, and opentelemetry-instrumentation-fastapi is pulled in by chromadb.

👀 Have you spent some time to check if this bug has been raised before?

• I checked and didn't find similar issue

Are you willing to submit PR?

None

Start with the generated pyproject.toml from langchain app new chat and compare it with the LangChain example described in pull request 1043. Update the relevant documentation to identify the dependencies needed for full instrumentation, then verify that the documented setup traces more than the LLM.