ci: add GitHub Actions build workflow with conda environment for Linux and macOS

Author: czgdp1807

.github/workflows/build.yml

@@ -0,0 +1,57 @@
+name: Build
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    name: Build (${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up conda environment
+      uses: conda-incubator/setup-miniconda@v3
+      with:
+        auto-activate-base: false
+        activate-environment: s2t-env
+        environment-file: environment.yml
+
+    - name: Install Bazel
+      shell: bash -l {0}
+      run: |
+        # Install Bazelisk (manages Bazel versions)
+        if [ "$RUNNER_OS" == "Linux" ]; then
+          curl -Lo /tmp/bazelisk https://github.com/bazelbuild/bazelisk/releases/download/v1.20.0/bazelisk-linux-amd64
+        elif [ "$RUNNER_OS" == "macOS" ]; then
+          curl -Lo /tmp/bazelisk https://github.com/bazelbuild/bazelisk/releases/download/v1.20.0/bazelisk-darwin-amd64
+        fi
+        chmod +x /tmp/bazelisk
+        sudo mv /tmp/bazelisk /usr/local/bin/bazel
+
+    - name: Configure Bazel
+      shell: bash -l {0}
+      run: |
+        ./configure.sh
+        bazel --version
+
+    - name: Patch Apple CC toolchain (macOS only)
+      if: runner.os == 'macOS'
+      shell: bash -l {0}
+      run: bazel build //:patch_local_config_apple_cc
+
+    - name: Build struct2tensor
+      shell: bash -l {0}
+      run: bazel build //struct2tensor:path --verbose_failures
+
+    - name: Build all targets
+      if: runner.os == 'Linux'
+      shell: bash -l {0}
+      run: bazel build //...

environment.yml

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+name: s2t-env-py311
+channels:
+  - conda-forge
+dependencies:
+  - python=3.11
+  - pip
+  - pip:
+    - absl-py==2.4.0
+    - altgraph==0.17.5
+    - astunparse==1.6.3
+    - certifi==2026.2.25
+    - charset-normalizer==3.4.5
+    - delocate==0.13.0
+    - flatbuffers==25.12.19
+    - gast==0.7.0
+    - google-pasta==0.2.0
+    - googleapis-common-protos==1.72.0
+    - grpcio==1.78.0
+    - h5py==3.16.0
+    - idna==3.11
+    - keras==3.13.2
+    - libclang==18.1.1
+    - macholib==1.16.4
+    - markdown==3.10.2
+    - markdown-it-py==4.0.0
+    - markupsafe==3.0.3
+    - mdurl==0.1.2
+    - ml-dtypes==0.4.1
+    - namex==0.1.0
+    - numpy==1.26.4
+    - opt-einsum==3.4.0
+    - optree==0.19.0
+    - protobuf==4.25.8
+    - pyarrow==10.0.1
+    - pygments==2.19.2
+    - requests==2.32.5
+    - rich==14.3.3
+    - six==1.17.0
+    - tensorboard==2.17.1
+    - tensorboard-data-server==0.7.2
+    - tensorflow==2.17.1
+    - tensorflow-io-gcs-filesystem==0.37.1
+    - tensorflow-metadata==1.17.3
+    - termcolor==3.3.0
+    - typing-extensions==4.15.0
+    - urllib3==2.6.3
+    - werkzeug==3.1.6
+    - wrapt==2.1.2