[Fix] NanoGPT Muse Spark fails during tool use - #1310
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What changed
NanoGPT requests for
meta/muse-spark-1.2-contributornow keep mixed tool-result and environment context in one contiguous tool message when replaying multi-turn history. A focused regression test reproduces repeated tool-call/result cycles from the diagnostics while confirming that parallel tool calls remain enabled.Why this change was made
The diagnostics showed four valid, sequential tool calls before NanoGPT rejected the fifth response with
Upstream emitted malformed tool call data that could not be repaired. Each tool result was followed by environment text that Zoo previously replayed as a separate user message, so this compatibility mitigation preserves that context on the matching tool message instead of changing unrelated parallel-call behavior.Impact
Muse Spark 1.2 Contributor receives a more stable multi-turn tool history without losing environment context or parallel tool support. Other NanoGPT models keep their existing message conversion.
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