Troubleshooting

Regional PyPI mirrors

A configured PyPI mirror may be missing a required package version or lag behind PyPI. For example, if the mirror does not provide mooncake-transfer-engine-cuda13>=0.3.10, installation fails to resolve the requirement in pyproject.toml. This is an index availability issue; the mirror does not have the required version.

Download that one wheel from PyPI, then use --find-links while keeping your existing uv mirror configuration for the other packages. With the Python 3.12 virtual environment from the installation guide active, install pip into it so the downloaded wheel matches that environment:

uv pip install pip
python -m pip download --no-deps --index-url https://pypi.org/simple \
    "mooncake-transfer-engine-cuda13>=0.3.10" -d ./wheels
uv pip install --prerelease=allow --find-links ./wheels -e .   # or "sglang-omni==<version>" in place of -e .