python: close runtime packaging and platform wheels

python/sdk-runtime/hatch_build.py

@@ -0,0 +1,60 @@
+from __future__ import annotations
+
+import os
+import platform
+import stat
+from pathlib import Path
+
+from hatchling.builders.hooks.plugin.interface import BuildHookInterface
+
+
+_PLATFORMS = {
+    "linux-x64": ("manylinux_2_28_x86_64", "dsh-jsonrpc-agent-pkg-linux-x64"),
+    "linux-arm64": ("manylinux_2_28_aarch64", "dsh-jsonrpc-agent-pkg-linux-arm64"),
+    "macos-arm64": ("macosx_11_0_arm64", "dsh-jsonrpc-agent-pkg-macos-arm64"),
+}
+
+
+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(
+                f"unsupported DSH_RUNTIME_PLATFORM_TAG {platform_tag!r}; expected one of {supported}"
+            )
+        expected_executable = matches[0][1]
+        runtime_dir = Path(self.root) / "src" / "deepseek_harness_runtime" / "runtime"
+        executables = sorted(runtime_dir.glob("dsh-jsonrpc-agent-pkg-*") if runtime_dir.is_dir() else [])
+        if [path.name for path in executables] != [expected_executable]:
+            found = ", ".join(path.name for path in executables) or "none"
+            raise RuntimeError(
+                f"runtime wheel {platform_tag} must contain only {expected_executable}; found {found}"
+            )
+        if executables[0].stat().st_mode & stat.S_IXUSR == 0:
+            raise RuntimeError(f"runtime executable is not executable: {executables[0]}")
+
+        build_data["pure_python"] = False
+        build_data["infer_tag"] = False
+        build_data["tag"] = f"py3-none-{platform_tag}"