[Workflow] Fix kernel release build failures for aarch64 and wheel renaming (#22018)

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

sgl-kernel/build.sh

@@ -25,6 +25,14 @@ mkdir -p "${BUILDX_CACHE_DIR}" "${CCACHE_HOST_DIR}"
 
 # Ensure a buildx builder with docker-container driver (required for cache export)
 BUILDER_NAME="sgl-kernel-builder"
+# RESET_BUILDER=1 removes and recreates the builder to clear corrupted internal
+# state (e.g. stale containerd snapshots from base image layer GC).
+if [ "${RESET_BUILDER:-0}" = "1" ]; then
+  echo "Resetting buildx builder: ${BUILDER_NAME}"
+  docker buildx rm "${BUILDER_NAME}" 2>/dev/null || true
+  rm -rf "${BUILDX_CACHE_DIR}"
+  mkdir -p "${BUILDX_CACHE_DIR}"
+fi
 if ! docker buildx inspect "${BUILDER_NAME}" >/dev/null 2>&1; then
   docker buildx create --name "${BUILDER_NAME}" --driver docker-container --use --bootstrap
 else
@@ -51,6 +59,7 @@ echo "Builder:        ${BUILDER_NAME}"
 echo "BUILD_JOBS:     ${BUILD_JOBS:-auto}"
 echo "NVCC_THREADS:   ${NVCC_THREADS:-32}"
 echo "USE_CCACHE:     ${USE_CCACHE:-1}"
+echo "RESET_BUILDER:  ${RESET_BUILDER:-0}"
 echo "----------------------------------------"
 
 # Optional build-args (empty string disables)
@@ -73,8 +82,8 @@ docker buildx build \
   --build-arg PYTHON_VERSION="${PYTHON_VERSION}" \
   --build-arg PYTHON_TAG="${PY_TAG}" \
   "${BUILD_ARGS[@]}" \
-  --cache-from type=local,src=${BUILDX_CACHE_DIR} \
-  --cache-to type=local,dest=${BUILDX_CACHE_DIR},mode=max \
+  --cache-from "type=local,src=${BUILDX_CACHE_DIR}" \
+  --cache-to "type=local,dest=${BUILDX_CACHE_DIR},mode=max" \
   --target deps \
   --load \
   -t "${DEPS_TAG}" \
@@ -132,7 +141,7 @@ export CMAKE_ARGS="${CMAKE_ARGS:-} -DSGL_KERNEL_COMPILE_THREADS=${NVCC_THREADS}"
 echo "Build parallelism: CMAKE_BUILD_PARALLEL_LEVEL=${CMAKE_BUILD_PARALLEL_LEVEL}, NVCC_THREADS=${NVCC_THREADS}"
 
 ${PYTHON_ROOT_PATH}/bin/python -m uv build --wheel -Cbuild-dir=build . --color=always --no-build-isolation
-./rename_wheels.sh
+PYTHON=${PYTHON_ROOT_PATH}/bin/python ./rename_wheels.sh
 
 if [ "${USE_CCACHE}" = "1" ]; then
   echo "=== ccache stats (after) ==="

sgl-kernel/rename_wheels.sh

@@ -55,7 +55,7 @@ for wheel in "${wheel_files[@]}"; do
     TMPDIR=$(mktemp -d)
     trap 'rm -rf -- "$TMPDIR"' ERR
 
-    python3 -m wheel unpack "$wheel" --dest "$TMPDIR"
+    "${PYTHON:-python3}" -m wheel unpack "$wheel" --dest "$TMPDIR"
     UNPACKED=$(find "$TMPDIR" -mindepth 1 -maxdepth 1 -type d | head -1)
     DIST_INFO=$(find "$UNPACKED" -maxdepth 1 -type d -name "*.dist-info" | head -1)
     WHEEL_META="${DIST_INFO}/WHEEL"
@@ -78,7 +78,7 @@ for wheel in "${wheel_files[@]}"; do
     mv "$DIST_INFO" "${UNPACKED}/${NEW_BASE}"
 
     rm -f "$wheel"
-    python3 -m wheel pack "$UNPACKED" --dest-dir "$WHEEL_DIR"
+    "${PYTHON:-python3}" -m wheel pack "$UNPACKED" --dest-dir "$WHEEL_DIR"
     rm -rf "$TMPDIR"
     trap - ERR
 done