fix: GEPA max_steps + validation artifact check#46
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May 2, 2026 22:25
…l artifact - DSPy 3.2.0 removed max_steps param from GEPA, use max_metric_calls - Constraint validation was checking evolved_body (no frontmatter) so skill_structure check (looking for --- markers) always failed - Now validates the full reassembled artifact (frontmatter + body) so skill_structure check passes correctly - Also fixes baseline constraint validation to use full artifact
…ring trailing LLM reasoning - Change re.search(r'\[.*\]') to r'\[.*?\]' (non-greedy) to stop at first complete JSON array instead of last ] in the entire response - Add markdown code fence stripping as secondary fallback - Expand error message to show 500 chars of LLM output for debugging
…ested arrays Previous regex-based approaches failed on deeply nested JSON because .* or .*? would stop at inner ] boundaries. Now uses a proper bracket- counting parser that tracks depth and string context to find the outermost complete JSON array.
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Summary
Two bug fixes in
evolution/skills/evolve_skill.py:1. GEPA
max_steps→max_metric_callsDSPy 3.2.0 removed the
max_stepsparameter from GEPA. Currently the code falls back to MIPROv2 since GEPA init fails, but GEPA would never run even if it became available in future DSPy versions.Fix: Use
max_metric_callsinstead ofmax_steps.2. Constraint validation checked wrong artifact
validate_all()was called onevolved_body(markdown body only, no frontmatter), so theskill_structurecheck — which looks for---frontmatter markers — always failed, even for valid skills.The same issue existed for baseline constraint validation (
skill["body"]vsskill["raw"]).Fix: Validate the full reassembled artifact (
evolved_full/skill["raw"]) soskill_structurecan find the frontmatter markers.Verification
Both fixes confirmed working with
--iterations 3on theobsidianskill:✓ skill_structurenow passes (was always failing before)