[CI] Apple Silicon Support for TorchRL

.github/scripts/pre_build_script_m1.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+python3 -mpip install git+https://github.com/pytorch-labs/tensordict.git

.github/workflows/build-wheels-m1.yml

@@ -0,0 +1,42 @@
+name: Build M1 Wheels
+
+on:
+  pull_request:
+  push:
+    branches:
+      - nightly
+      - main
+      - release/*
+    tags:
+        # NOTE: Binary build pipelines should only get triggered on release candidate builds
+        # Release candidate tags look like: v1.11.0-rc1
+        - v[0-9]+.[0-9]+.[0-9]+-rc[0-9]+
+  workflow_dispatch:
+
+jobs:
+  generate-matrix:
+    uses: pytorch/test-infra/.github/workflows/generate_binary_build_matrix.yml@main
+    with:
+      package-type: wheel
+      os: macos-arm64
+      test-infra-repository: pytorch/test-infra
+      test-infra-ref: main
+  build:
+    needs: generate-matrix
+    name: pytorch/rl
+    uses: pytorch/test-infra/.github/workflows/build_wheels_macos.yml@main
+    with:
+      repository: pytorch/rl
+      ref: ""
+      test-infra-repository: pytorch/test-infra
+      test-infra-ref: main
+      build-matrix: ${{ needs.generate-matrix.outputs.matrix }}
+      pre-script: .github/scripts/pre_build_script_m1.sh
+      post-script: ""
+      package-name: torchrl
+      runner-type: macos-m1-12
+      smoke-test-script: ""
+      trigger-event: ${{ github.event_name }}
+    secrets:
+      AWS_PYTORCH_UPLOADER_ACCESS_KEY_ID: ${{ secrets.AWS_PYTORCH_UPLOADER_ACCESS_KEY_ID }}
+      AWS_PYTORCH_UPLOADER_SECRET_ACCESS_KEY: ${{ secrets.AWS_PYTORCH_UPLOADER_SECRET_ACCESS_KEY }}

.github/workflows/wheels.yml

@@ -84,6 +84,47 @@ jobs:
           name: torchrl-batch.whl
           path: dist/*.whl
 
+  build-wheel-m1:
+    runs-on: macos-m1-12
+    strategy:
+      matrix:
+        python_version: [["3.8", "3.8"], ["3.9", "3.9"], ["3.10", "3.10.3"], ["3.11", "3.11"]]
+    steps:
+      - name: Checkout torchrl
+        uses: actions/checkout@v2
+      - uses: conda-incubator/setup-miniconda@v2
+        with:
+          python-version: ${{ matrix.python-version[1] }}
+      - name: Binary Build in Conda Environment
+        run: |
+          set -euxo pipefail
+          conda clean --all --quiet --yes
+          conda create \
+            --yes \
+            --quiet \
+            -n buildenv \
+            python=${{ matrix.python_version[1] }}
+
+          conda activate buildenv
+
+          # Install PyTorch RC
+          python3 -mpip install torch --extra-index-url https://download.pytorch.org/whl/cpu
+
+          # Build Wheel
+          export CC=clang CXX=clang++
+          python3 -mpip install wheel
+          BUILD_VERSION=0.1.1 python3 setup.py bdist_wheel
+      - name: Upload wheel for the test-wheel job
+        uses: actions/upload-artifact@v2
+        with:
+          name: torchrl-mac-${{ matrix.python_version[0] }}.whl
+          path: dist/torchrl-*.whl
+      - name: Upload wheel for download
+        uses: actions/upload-artifact@v2
+        with:
+          name: torchrl-batch.whl
+          path: dist/*.whl
+
   build-wheel-windows:
     runs-on: windows-latest
     strategy: