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fix(vllm): restore compatibility with vLLM >= 0.22 (get_tokenizer moved) vLLM 0.22 moved get_tokenizer from vllm.transformers_utils.tokenizer to vllm.tokenizers. Since the backend requirements install vllm unpinned, freshly built/installed vllm backends currently fail to start with ModuleNotFoundError: No module named 'vllm.transformers_utils.tokenizer' (surfacing as 'grpc service not ready' when loading a model). Use the same try/except version-compat import pattern already used elsewhere in this file: try the new vllm.tokenizers location first and fall back to the pre-0.22 path. Tested on a DGX Spark (GB10, ARM64) with the cuda13-nvidia-l4t-arm64-vllm backend and vllm 0.22.0: model load, chat completions and tool calls all work with this patch applied. Signed-off-by: pos-ei-don <1822533+pos-ei-don@users.noreply.github.com> Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Creating a separate environment for the vllm project
make vllm