Related Issues/PRs

Fixes import error from https://github.com/mlflow/dev/actions/runs/20167909408/job/57895769194#step:11:90

What changes are proposed in this pull request?

The test file tests/langchain/test_langchain_model_export.py imports ChatOpenAI from langchain_openai, which is a separate package from langchain. This causes tests/pyfunc/docker/test_docker_flavors.py to fail when importing fixtures from it:

# tests/pyfunc/docker/test_docker_flavors.py:34
from tests.langchain.test_langchain_model_export import fake_chat_model  # noqa: F401

# tests/langchain/test_langchain_model_export.py:38
from langchain_openai import ChatOpenAI  # ModuleNotFoundError

Added langchain-openai to requirements/extra-ml-requirements.txt alongside langchain.

How is this PR tested?

• Existing unit/integration tests

Does this PR require documentation update?

• No. You can skip the rest of this section.

Release Notes

Is this a user-facing change?

• No. You can skip the rest of this section.

What component(s), interfaces, languages, and integrations does this PR affect?

Components

• area/build: Build and test infrastructure for MLflow

How should the PR be classified in the release notes? Choose one:

• rn/none - No description will be included. The PR will be mentioned only by the PR number in the "Small Bugfixes and Documentation Updates" section

Should this PR be included in the next patch release?

• Yes (this PR will be cherry-picked and included in the next patch release)

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.