pydantic-ai 2.x upgrade blocked by marvin incompatibility
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- Dominant language
- Python
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Description
Dependabot #692 bumps pydantic-ai 1.106.0 → 2.9.1 in a2a/a2a_contact_extractor. Dependencies resolve cleanly, but test-startup fails at import:
ImportError: cannot import name 'Usage' from 'pydantic_ai.usage'
The transitive dependency marvin imports Usage from pydantic_ai.usage, which pydantic-ai 2.x removed/renamed. This is not fixable in this repo — it needs a marvin release that supports pydantic-ai 2.x. Hold the bump on pydantic-ai 1.x until then.
Closing #692; will revisit once marvin supports pydantic-ai 2.x.
Assisted-By: Claude Code
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
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Research direction
Start in a2a/a2a_contact_extractor and run test-startup to reproduce the import failure reported after Dependabot #692. Check the marvin dependency's import of pydantic_ai.usage. The issue is done when a marvin release supports pydantic-ai 2.x and startup passes, or the dependency remains held on pydantic-ai 1.x until then.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Active
- Clarity
- Clearly specified
- Newbie friendliness
- 25/100