Adding conda builds for M1 (#2473)

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

@@ -35,6 +35,10 @@ jobs:
         env:
           ENV_NAME: conda-env-${{ github.run_id }}
           PY_VERS: ${{ matrix.py_vers }}
+          CU_VERSION: cpu
+          USE_FFMPEG: true
+          USE_OPENMP: false
+          USE_CUDA: false
         run: |
           echo $PATH
           . ~/miniconda3/etc/profile.d/conda.sh
@@ -46,6 +50,10 @@ jobs:
           else
             setup_build_version
           fi
+          git submodule update --init --recursive
+          export SOURCE_ROOT_DIR=$(pwd)
+          export FFMPEG_ROOT="${SOURCE_ROOT_DIR}/third_party/ffmpeg"
+          . packaging/ffmpeg/build.sh
           WHL_NAME=torchaudio-${BUILD_VERSION}-cp${PY_VERS/.}-cp${PY_VERS/.}-macosx_11_0_arm64.whl
           conda create -yp ${ENV_NAME} python=${PY_VERS} numpy cmake ninja wheel pkg-config
           conda run -p ${ENV_NAME} python3 -mpip install torch --pre --extra-index-url=https://download.pytorch.org/whl/${CHANNEL}
@@ -70,7 +78,6 @@ jobs:
           conda run --cwd /tmp -p ${ENV_NAME} python3 -c "import torch;import torchaudio;torchaudio.set_audio_backend('sox_io')"
           conda env remove -p ${ENV_NAME}
       - name: Upload wheel to GitHub
-        if: ${{ github.event_name == 'push' && (github.event.ref == 'refs/heads/nightly' || startsWith(github.event.ref, 'refs/tags/')) }}
         uses: actions/upload-artifact@v3
         with:
           name: torchaudio-py${{ matrix.py_vers }}-macos11-m1
@@ -85,3 +92,76 @@ jobs:
           for pkg in dist/*; do
             aws s3 cp "$pkg" "s3://pytorch/whl/${CHANNEL}/cpu/" --acl public-read
           done
+  build_conda:
+    name: "Build TorchAudio M1 conda packages"
+    runs-on: macos-m1-11
+    strategy:
+      matrix:
+        py_vers: [ "3.8", "3.9", "3.10" ]
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+      - name: Set CHANNEL (only for tagged pushes)
+        if: ${{ github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags/') }}
+        run: |
+          # reference ends with an RC suffix
+          if [[ ${GITHUB_REF_NAME} = *-rc[0-9]* ]]; then
+            echo "CHANNEL=test" >> "$GITHUB_ENV"
+          fi
+      - name: Install conda-build and purge previous artifacts
+        shell: arch -arch arm64 bash {0}
+        run: |
+          . ~/miniconda3/etc/profile.d/conda.sh
+          conda install -yq conda-build
+          conda build purge-all
+      - name: Build TorchAudio M1 conda package
+        shell: arch -arch arm64 bash {0}
+        env:
+          ENV_NAME: conda-env-${{ github.run_id }}
+          PYTHON_VERSION: ${{ matrix.py_vers }}
+          CU_VERSION: cpu
+          USE_FFMPEG: true
+          USE_OPENMP: false
+          USE_CUDA: false
+        run: |
+          . ~/miniconda3/etc/profile.d/conda.sh
+          set -ex
+          . packaging/pkg_helpers.bash
+
+          export CONDA_CHANNEL_FLAGS=""
+          if [[ $CHANNEL == "test" ]]; then
+            setup_cuda
+            setup_base_build_version
+            export CONDA_CHANNEL_FLAGS="pytorch-test"
+            etup_macos
+          else
+            setup_cuda
+            setup_build_version
+            setup_macos
+          fi
+          export PYTORCH_VERSION="$(conda run -p ${ENV_NAME} python3 -mpip show torch | grep ^Version: | sed 's/Version: *//')"
+          git submodule update --init --recursive
+          export SOURCE_ROOT_DIR=$(pwd)
+          export FFMPEG_ROOT="${SOURCE_ROOT_DIR}/third_party/ffmpeg"
+          . packaging/ffmpeg/build.sh
+          setup_conda_pytorch_constraint
+          setup_conda_cudatoolkit_constraint
+          setup_visual_studio_constraint
+          conda build -c defaults $CONDA_CHANNEL_FLAGS --no-anaconda-upload --python "$PYTHON_VERSION" packaging/torchaudio
+          mkdir -p dist
+          cp ~/miniconda3/conda-bld/osx-arm64/*.tar.bz2 dist/
+      - name: Upload package to GitHub
+        uses: actions/upload-artifact@v3
+        with:
+          name: torchaudio-py${{ matrix.py_vers }}-macos11-m1-conda
+          path: dist/
+      - name: Upload package to conda
+        if: ${{ github.event_name == 'push' && (github.event.ref == 'refs/heads/nightly' || startsWith(github.event.ref, 'refs/tags/')) }}
+        shell: arch -arch arm64 bash {0}
+        env:
+          CONDA_PYTORCHBOT_TOKEN: ${{ secrets.CONDA_PYTORCHBOT_TOKEN }}
+        run: |
+          . ~/miniconda3/etc/profile.d/conda.sh
+          conda install -yq anaconda-client
+          set -x
+          anaconda  -t "${CONDA_PYTORCHBOT_TOKEN}" upload ~/miniconda3/conda-bld/osx-arm64/*.tar.bz2 -u "pytorch-${CHANNEL}" --label main --no-progress --force

packaging/pkg_helpers.bash

@@ -222,8 +222,11 @@ setup_conda_pytorch_constraint() {
   fi
   # TODO: Remove me later, see https://github.com/pytorch/pytorch/issues/62424 for more details
   if [[ "$(uname)" == Darwin ]]; then
-    # Use less than equal to avoid version conflict in python=3.6 environment
-    export CONDA_EXTRA_BUILD_CONSTRAINT="- mkl<=2021.2.0"
+    arch_name="$(uname -m)"
+    if [ "${arch_name}" != "arm64" ]; then
+      # Use less than equal to avoid version conflict in python=3.6 environment
+      export CONDA_EXTRA_BUILD_CONSTRAINT="- mkl<=2021.2.0"
+    fi
   fi
 }