feat: Enhance error messages for missing optional server dependencies… #307
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
… and update fastmcp to improve optional dependency handling.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This PR improves the developer experience when running ultrarag build with only base dependencies installed.
Previously, if an optional MCP server (for example evaluation) failed to start due to missing extras, the CLI surfaced a generic error like:
Client failed to connect: Server session was closed unexpectedly
This was hard to diagnose.
so i added a build-time error translation layer in client.py.
When client.call_tool(...) fails with a server-closed error for known optional servers (retriever, generation, evaluation, corpus), the CLI now raises a clear actionable message with install commands:
uv sync --extra
pip install "ultrarag[]"
Added explicit import guidance in evaluation.py:
If rouge-score is missing, it now raises a clear ModuleNotFoundError with installation instructions.