[doctest]: ValueError: 'aimv2' is already used by a Transformers config, pick another name

[Yikun]

Your current environment

https://github.com/vllm-project/vllm-ascend/actions/runs/16539763269/job/46779322335

🐛 Describe the bug

Traceback (most recent call last):
  File "/vllm-workspace/vllm-ascend/tests/e2e/../../examples/offline_inference_npu.py", line 26, in <module>
    from vllm import LLM, SamplingParams
  File "/tmp/vllm_venv/lib/python3.11/site-packages/vllm/__init__.py", line 12, in <module>
    from vllm.engine.arg_utils import AsyncEngineArgs, EngineArgs
  File "/tmp/vllm_venv/lib/python3.11/site-packages/vllm/engine/arg_utils.py", line 20, in <module>
    from vllm.config import (BlockSize, CacheConfig, CacheDType, CompilationConfig,
  File "/tmp/vllm_venv/lib/python3.11/site-packages/vllm/config.py", line 38, in <module>
    from vllm.transformers_utils.config import (
  File "/tmp/vllm_venv/lib/python3.11/site-packages/vllm/transformers_utils/config.py", line 31, in <module>
    from vllm.transformers_utils.configs import (ChatGLMConfig, Cohere2Config,
  File "/tmp/vllm_venv/lib/python3.11/site-packages/vllm/transformers_utils/configs/__init__.py", line 26, in <module>
    from vllm.transformers_utils.configs.ovis import OvisConfig
  File "/tmp/vllm_venv/lib/python3.11/site-packages/vllm/transformers_utils/configs/ovis.py", line 75, in <module>
    AutoConfig.register("aimv2", AIMv2Config)
  File "/tmp/vllm_venv/lib/python3.11/site-packages/transformers/models/auto/configuration_auto.py", line 1306, in register
    CONFIG_MAPPING.register(model_type, config, exist_ok=exist_ok)
  File "/tmp/vllm_venv/lib/python3.11/site-packages/transformers/models/auto/configuration_auto.py", line 993, in register
    raise ValueError(f"'{key}' is already used by a Transformers config, pick another name.")
ValueError: 'aimv2' is already used by a Transformers config, pick another name.

[Yikun]

All vLLM <= v0.10.0 and transformers>=4.54.0 will encounter this issue, the vLLM fix this issue on vllm-project/vllm@3fc9644

As workaround: pip install "transformers<4.54.0"

[arbel03]

All vLLM <= v0.10.0 and transformers>=4.54.0 will encounter this issue, the vLLM fix this issue on vllm-project/vllm@3fc9644

As workaround: pip install "transformers<=4.54.0"

Fixed it for me:
pip install "transformers<4.54.0"

Note the < (less than) instead of the <= (less than equal)

[Yikun]

@arbel03 oh, my bad just fixed the text.