Devin AI be3e7998ae fix: merge system messages into user messages for Ollama models ...

Some Ollama models (like Olmo, Nemotron-3-nano) don't properly respect
system messages, causing them to ignore tool-format instructions.

This fix modifies _format_messages_for_provider() to merge system message
content into the first user message for Ollama models, ensuring the
instructions are visible to the model.

Changes:
- Accumulate all system messages and merge into first user message
- Handle edge cases: system-only messages, system then assistant
- Preserve conversation history after system message merge
- Add comprehensive tests for all scenarios

Fixes #4117

Co-Authored-By: João <joao@crewai.com>

2025-12-18 11:39:51 +00:00

35 KiB

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