deepseek-ai/deepseek-harness · error · RuntimeError

unsupported deepseek-harness-runtime-bin build platform: {ke

Error message

unsupported deepseek-harness-runtime-bin build platform: {key}

What it means

Error "unsupported deepseek-harness-runtime-bin build platform: {key}" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at python/sdk-runtime/hatch_build.py:46

            or not isinstance(raw["executable"], str)
        ):
            raise RuntimeError(f"{path} platform entries must contain string tag and executable fields")
        platforms[name] = (raw["tag"], raw["executable"])
    return platforms


_PLATFORMS = _load_platforms()


def _host_platform_tag() -> str:
    machine = platform.machine().lower()
    arch = "arm64" if machine in {"arm64", "aarch64"} else "x64" if machine in {"x86_64", "amd64"} else machine
    system = platform.system().lower()
    key = f"macos-{arch}" if system == "darwin" else f"linux-{arch}" if system == "linux" else system
    try:
        return _PLATFORMS[key][0]
    except KeyError as exc:
        raise RuntimeError(f"unsupported deepseek-harness-runtime-bin build platform: {key}") from exc


class RuntimeBuildHook(BuildHookInterface):
    """Assign the native wheel tag and reject incomplete or mixed-platform payloads."""

    def initialize(self, version: str, build_data: dict[str, object]) -> None:
        if version == "editable":
            return
        if self.target_name == "sdist":
            raise RuntimeError(
                "deepseek-harness-runtime-bin is wheel-only; build and publish platform wheels only."
            )

        platform_tag = os.environ.get("DSH_RUNTIME_PLATFORM_TAG") or _host_platform_tag()
        matches = [value for value in _PLATFORMS.values() if value[0] == platform_tag]
        if len(matches) != 1:
            supported = ", ".join(value[0] for value in _PLATFORMS.values())
            raise RuntimeError(

View on GitHub (pinned to b150a551b8)

Solutions

1. Use one of the supported platform keys in the manifest; remove or rename the unsupported entry.

When it happens

Trigger: Thrown at python/sdk-runtime/hatch_build.py:46 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of deepseek-ai/deepseek-harness@b150a551b8 (2026-08-24). Data as JSON: /api/errors/b18bfe8a5960c47c. Report an issue: GitHub.