[BUG]

[jonhilgart22]

Bug Description

A clear and concise description of what the bug is.

dspy failing for parallel extractions

  Item 11: dspy.settings can only be changed by the thread that initially configured it.
  Item 63: dspy.settings can only be changed by the thread that initially configured it.
  Item 16: dspy.settings can only be changed by the thread that initially configured it.
  Item 29: dspy.settings can only be changed by the thread that initially configured it.
  Item 54: dspy.settings can only be changed by the thread that initially configured it.
  ... and 60 more errors
2025-10-09 18:37:28.101 | ERROR    | pacific.deps.logs:error:79 - Traceback:
Traceback (most recent call last):
  File "/Users/jonathanhilgart/code/pacific-server-3/pacific/data/docetl/organization/langstruct_extraction.py", line 416, in extract_organization_metrics_langstruct
    # Use LangStruct's batch extraction - handles parallelization internally
                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/jonathanhilgart/Library/Caches/pypoetry/virtualenvs/pacific-VPF9xZkC-py3.12/lib/python3.12/site-packages/langstruct/api.py", line 302, in extract
    return self._extract_parallel(
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/jonathanhilgart/Library/Caches/pypoetry/virtualenvs/pacific-VPF9xZkC-py3.12/lib/python3.12/site-packages/langstruct/api.py", line 377, in _extract_parallel
    result.raise_if_failed()
  File "/Users/jonathanhilgart/Library/Caches/pypoetry/virtualenvs/pacific-VPF9xZkC-py3.12/lib/python3.12/site-packages/langstruct/parallel.py", line 90, in raise_if_failed
    raise RuntimeError(msg)
RuntimeError: Failed to process 65 items:
  Item 11: dspy.settings can only be changed by the thread that initially configured it.
  Item 63: dspy.settings can only be changed by the thread that initially configured it.
  Item 16: dspy.settings can only be changed by the thread that initially configured it.
  Item 29: dspy.settings can only be changed by the thread that initially configured it.
  Item 54: dspy.settings can only be changed by the thread that initially configured it.
  ... and 60 more errors

Reproduction Steps

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1. Go to '...'
2. Run '...'
3. See error

Expected Behavior

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Actual Behavior

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Error Message

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Environment

• LangStruct version: [e.g., 0.1.0]
• Python version: [e.g., 3.12.0]
• Operating System: [e.g., macOS 14.0, Ubuntu 22.04, Windows 11]
• LLM Provider: [e.g., OpenAI GPT-4, Google Gemini]

Minimal Code Example

from langstruct import LangStruct

# Minimal code that reproduces the issue
extractor = LangStruct(example={"name": "John"})
result = extractor.extract("Some text")  # This fails

Additional Context

Add any other context about the problem here, such as:

• Does this happen with all models or just specific ones?
• Is this related to a specific type of text/document?
• Any workarounds you've found?

Checklist

• I have searched existing issues to make sure this isn't a duplicate
• I have provided a minimal code example that reproduces the issue
• I have included the complete error message/stack trace
• I have specified my environment details