fix Xeon CI (#11454)

.github/workflows/pr-test-xeon.yml

@@ -41,10 +41,12 @@ jobs:
         run: |
           version=$(cat python/sglang/version.py | cut -d'"' -f2)
           tag=v${version}-xeon
+          PR_REPO=${{ github.event.pull_request.head.repo.clone_url }}
+          PR_HEAD_REF=${{ github.head_ref }}
 
           docker build \
-            --build-arg SGLANG_REPO=${{ github.event.pull_request.head.repo.clone_url }} \
-            --build-arg VER_SGLANG=${{ github.head_ref }} \
+            ${PR_REPO:+--build-arg SGLANG_REPO=$PR_REPO} \
+            ${PR_HEAD_REF:+--build-arg VER_SGLANG=$PR_HEAD_REF} \
             . -f docker/Dockerfile.xeon  -t sglang_xeon --no-cache
 
       - name: Run container
@@ -55,15 +57,6 @@ jobs:
             --name ci_sglang_xeon \
             sglang_xeon
 
-      - name: Install dependencies
-        timeout-minutes: 20
-        run: |
-          docker exec ci_sglang_xeon bash -c "python3 -m pip install --upgrade pip"
-          docker exec ci_sglang_xeon pip uninstall sgl-kernel -y || true
-          docker exec -w /sglang-checkout/sgl-kernel ci_sglang_xeon bash -c "cp pyproject_cpu.toml pyproject.toml && pip install -v ."
-          docker exec -w /sglang-checkout/ ci_sglang_xeon bash -c "rm -rf python/pyproject.toml && mv python/pyproject_other.toml python/pyproject.toml"
-          docker exec -w /sglang-checkout/ ci_sglang_xeon bash -c "pip install -e "python[dev_cpu]""
-
       - name: Check AMX support
         id: check_amx
         timeout-minutes: 5
@@ -72,7 +65,6 @@ jobs:
             bash -c "python3 -c 'import torch; import sgl_kernel; assert torch._C._cpu._is_amx_tile_supported(); assert hasattr(torch.ops.sgl_kernel, \"convert_weight_packed\"); '"
 
       - name: Run unit tests
-        if: steps.check_amx.outcome == 'success'
         timeout-minutes: 36
         run: |
           docker exec -w /sglang-checkout/ ci_sglang_xeon \

docker/Dockerfile.xeon

@@ -35,7 +35,7 @@ ENV CONDA_PREFIX=/sgl-workspace/miniforge3
 RUN pip config set global.index-url https://download.pytorch.org/whl/cpu && \
     pip config set global.extra-index-url https://pypi.org/simple
 
-RUN git clone ${SGLANG_REPO} && \
+RUN git clone ${SGLANG_REPO} sglang && \
     cd sglang && \
     git checkout ${VER_SGLANG} && \
     cd python && \