Fix ExecuTorch CI after landing pytorch#6564 (pytorch#139700)

After landing pytorch/executorch#6564, we need to update the pinned ExecuTorch commit on PyTorch is fix the regression on PyTorch side.  The change to `.ci/docker/common/install_executorch.sh` is needed because it's how the dependencies are setup on ExecuTorch CI now.
Pull Request resolved: pytorch#139700
Approved by: https://github.com/larryliu0820, https://github.com/malfet

Author: huydhn

.ci/docker/ci_commit_pins/executorch.txt

@@ -1 +1 @@
-91c382df0d2b2ef383d57998a61187cfefcb26e3
+8ab3385f4187bad56c66dba29152e34c158f368a

.ci/docker/common/install_executorch.sh

@@ -36,12 +36,8 @@ install_conda_dependencies() {
 }
 
 install_pip_dependencies() {
-  pushd executorch/.ci/docker
-  # Install PyTorch CPU build beforehand to avoid installing the much bigger CUDA
-  # binaries later, ExecuTorch only needs CPU
-  pip_install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cpu
-  # Install all Python dependencies
-  pip_install -r requirements-ci.txt
+  pushd executorch
+  as_jenkins bash install_requirements.sh --pybind xnnpack
   popd
 }
 

.github/workflows/pull.yml

@@ -521,30 +521,6 @@ jobs:
       test-matrix: ${{ needs.linux-focal-cuda12_1-py3_10-gcc9-sm86-build.outputs.test-matrix }}
     secrets: inherit
 
-  linux-jammy-py3-clang12-executorch-build:
-    name: linux-jammy-py3-clang12-executorch
-    uses: ./.github/workflows/_linux-build.yml
-    needs: get-label-type
-    with:
-      runner_prefix: "${{ needs.get-label-type.outputs.label-type }}"
-      build-environment: linux-jammy-py3-clang12-executorch
-      docker-image-name: pytorch-linux-jammy-py3-clang12-executorch
-      test-matrix: |
-        { include: [
-          { config: "executorch", shard: 1, num_shards: 1, runner: "${{ needs.get-label-type.outputs.label-type }}linux.2xlarge" },
-        ]}
-    secrets: inherit
-
-  linux-jammy-py3-clang12-executorch-test:
-    name: linux-jammy-py3-clang12-executorch
-    uses: ./.github/workflows/_linux-test.yml
-    needs: linux-jammy-py3-clang12-executorch-build
-    with:
-      build-environment: linux-jammy-py3-clang12-executorch
-      docker-image: ${{ needs.linux-jammy-py3-clang12-executorch-build.outputs.docker-image }}
-      test-matrix: ${{ needs.linux-jammy-py3-clang12-executorch-build.outputs.test-matrix }}
-    secrets: inherit
-
   linux-focal-py3_12-clang10-experimental-split-build:
     if: false # See https://github.com/pytorch/pytorch/issues/138750
     name: linux-focal-py3.12-clang10-experimental-split-build

.github/workflows/unstable.yml

@@ -33,3 +33,37 @@ jobs:
           echo
           echo "Once the jobs are deemed stable enough (% red signal < 5% and TTS < 3h),"
           echo " they can graduate and move back to pull or trunk."
+
+  get-label-type:
+    name: get-label-type
+    uses: pytorch/pytorch/.github/workflows/_runner-determinator.yml@main
+    if: ${{ (github.event_name != 'schedule' || github.repository == 'pytorch/pytorch') && github.repository_owner == 'pytorch' }}
+    with:
+      triggering_actor: ${{ github.triggering_actor }}
+      issue_owner: ${{ github.event.pull_request.user.login || github.event.issue.user.login }}
+      curr_branch: ${{ github.head_ref || github.ref_name }}
+
+  # TODO(huydhn): Mark executorch job as unstable until it's fixed
+  linux-jammy-py3-clang12-executorch-build:
+    name: linux-jammy-py3-clang12-executorch
+    uses: ./.github/workflows/_linux-build.yml
+    needs: get-label-type
+    with:
+      runner_prefix: "${{ needs.get-label-type.outputs.label-type }}"
+      build-environment: linux-jammy-py3-clang12-executorch
+      docker-image-name: pytorch-linux-jammy-py3-clang12-executorch
+      test-matrix: |
+        { include: [
+          { config: "executorch", shard: 1, num_shards: 1, runner: "${{ needs.get-label-type.outputs.label-type }}linux.2xlarge" },
+        ]}
+    secrets: inherit
+
+  linux-jammy-py3-clang12-executorch-test:
+    name: linux-jammy-py3-clang12-executorch
+    uses: ./.github/workflows/_linux-test.yml
+    needs: linux-jammy-py3-clang12-executorch-build
+    with:
+      build-environment: linux-jammy-py3-clang12-executorch
+      docker-image: ${{ needs.linux-jammy-py3-clang12-executorch-build.outputs.docker-image }}
+      test-matrix: ${{ needs.linux-jammy-py3-clang12-executorch-build.outputs.test-matrix }}
+    secrets: inherit