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Workaround for uv pip install vllm on cpu targets #552

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Workaround for uv pip install vllm on cpu targets #552

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Run uv pip install twice during server setup, first with --no-deps, a…
pjin-nvidia Dec 31, 2025
2992645
The "pre-install" command just installs vllm (--no-deps).
pjin-nvidia Dec 31, 2025
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4 changes: 4 additions & 0 deletions nemo_gym/cli.py
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Original file line number Diff line number Diff line change
Expand Up @@ -81,6 +81,10 @@ def _setup_env_command(dir_path: Path, global_config_dict: DictConfig) -> str:
)
elif has_pyproject_toml:
install_cmd = f"""uv pip install {uv_pip_python_flag} '-e .' {" ".join(head_server_deps)}"""
if dir_path.name == "vllm_model":
# NB: --no-deps is a workaround for installing vllm (current version: 0.11.2) on a cpu target,
# b/c `uv pip install` resolves dependencies differently vs `pip install`.
install_cmd = f"""uv pip install {uv_pip_python_flag} --no-deps 'vllm==0.11.2' && {install_cmd}"""
elif has_requirements_txt:
install_cmd = f"""uv pip install {uv_pip_python_flag} -r requirements.txt {" ".join(head_server_deps)}"""
else:
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