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[Bugfix] Fix Fish Speech startup on vLLM 0.18.0 - missing architectures #2166

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linyueqian wants to merge 2 commits into from
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[Bugfix] Fix Fish Speech startup on vLLM 0.18.0 - missing architectures #2166

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dd0f833
[Bugfix] Auto-inject architectures from stage config model_arch
linyueqian Mar 25, 2026
7046501
Merge branch 'main' into fix/fish-speech-architectures
princepride Mar 25, 2026
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7 changes: 7 additions & 0 deletions vllm_omni/engine/arg_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -125,6 +125,13 @@ def create_model_config(self) -> OmniModelConfig:
}
stage_connector_config["extra"]["stage_id"] = self.stage_id

# If the stage config specifies model_arch, ensure architectures is
# set in hf_overrides so vLLM's ModelConfig can resolve the model
# class. This is a no-op when the model already has architectures
# in config.json (hf_overrides merges, existing values take priority).
if self.model_arch and not self.hf_overrides:
self.hf_overrides = {"architectures": [self.model_arch]}

# Build the vLLM config first, then use it to create the Omni config.
model_config = super().create_model_config()

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