ci: Enable dummy GitHub actions for repository

Allows us to use upstream's CI

Author: EricCousineau-TRI

.github/workflows/ci.yml

@@ -5,355 +5,13 @@ on:
   pull_request:
   push:
     branches:
-      - master
-      - stable
-      - v*
+      - drake
 
 jobs:
-  standard:
-    strategy:
-      matrix:
-        runs-on: [ubuntu-latest, windows-latest, macos-latest]
-        arch: [x64]
-        python:
-        - 2.7
-        - 3.5
-        - 3.8
-        - pypy2
-        - pypy3
-
-        include:
-          - runs-on: ubuntu-latest
-            python: 3.6
-            arch: x64
-            args: >
-              -DPYBIND11_FINDPYTHON=ON
-          - runs-on: windows-2016
-            python: 3.7
-            arch: x86
-            args2: >
-              -DCMAKE_CXX_FLAGS="/permissive- /EHsc /GR"
-          - runs-on: windows-latest
-            python: 3.6
-            arch: x64
-            args: >
-              -DPYBIND11_FINDPYTHON=ON
-          - runs-on: windows-latest
-            python: 3.7
-            arch: x64
-
-          - runs-on: ubuntu-latest
-            python: 3.9-dev
-            arch: x64
-          - runs-on: macos-latest
-            python: 3.9-dev
-            arch: x64
-            args: >
-              -DPYBIND11_FINDPYTHON=ON
-
-        exclude:
-            # Currently 32bit only, and we build 64bit
-          - runs-on: windows-latest
-            python: pypy2
-            arch: x64
-          - runs-on: windows-latest
-            python: pypy3
-            arch: x64
-
-            # Currently broken on embed_test
-          - runs-on: windows-latest
-            python: 3.8
-            arch: x64
-          - runs-on: windows-latest
-            python: 3.9-dev
-            arch: x64
-
-
-    name: "🐍 ${{ matrix.python }} • ${{ matrix.runs-on }} • ${{ matrix.arch }} ${{ matrix.args }}"
-    runs-on: ${{ matrix.runs-on }}
-    continue-on-error: ${{ endsWith(matrix.python, 'dev') }}
-
-    steps:
-    - uses: actions/checkout@v2
-
-    - name: Setup Python ${{ matrix.python }}
-      uses: actions/setup-python@v2
-      with:
-        python-version: ${{ matrix.python }}
-        architecture: ${{ matrix.arch }}
-
-    - name: Setup Boost (Windows / Linux latest)
-      run: echo "::set-env name=BOOST_ROOT::$BOOST_ROOT_1_72_0"
-
-    - name: Update CMake
-      uses: jwlawson/[email protected]
-
-    - name: Cache wheels
-      if: runner.os == 'macOS'
-      uses: actions/cache@v2
-      with:
-        # This path is specific to macOS - we really only need it for PyPy NumPy wheels
-        # See https://github.com/actions/cache/blob/master/examples.md#python---pip
-        # for ways to do this more generally
-        path: ~/Library/Caches/pip
-        # Look to see if there is a cache hit for the corresponding requirements file
-        key: ${{ runner.os }}-pip-${{ matrix.python }}-${{ matrix.arch }}-${{ hashFiles('tests/requirements.txt') }}
-
-    - name: Prepare env
-      run: python -m pip install -r tests/requirements.txt --prefer-binary
-
-    - name: Setup annotations
-      run: python -m pip install pytest-github-actions-annotate-failures
-
-    - name: Configure C++11 ${{ matrix.args }}
-      run: >
-        cmake -S . -B .
-        -DPYBIND11_WERROR=ON
-        -DDOWNLOAD_CATCH=ON
-        -DDOWNLOAD_EIGEN=ON
-        -DCMAKE_CXX_STANDARD=11
-        ${{ matrix.args }}
-
-    - name: Build C++11
-      run: cmake --build . -j 2
-
-    - name: Python tests C++11
-      run: cmake --build . --target pytest -j 2
-
-    - name: C++11 tests
-      run: cmake --build .  --target cpptest -j 2
-
-    - name: Interface test C++11
-      run: cmake --build . --target test_cmake_build
-
-    - name: Clean directory
-      run: git clean -fdx
-
-    - name: Configure ${{ matrix.args2 }}
-      run: >
-        cmake -S . -B build2
-        -DPYBIND11_WERROR=ON
-        -DDOWNLOAD_CATCH=ON
-        -DDOWNLOAD_EIGEN=ON
-        -DCMAKE_CXX_STANDARD=17
-        ${{ matrix.args }}
-        ${{ matrix.args2 }}
-
-    - name: Build
-      run: cmake --build build2 -j 2
-
-    - name: Python tests
-      run: cmake --build build2 --target pytest
-
-    - name: C++ tests
-      run: cmake --build build2 --target cpptest
-
-    - name: Interface test
-      run: cmake --build build2 --target test_cmake_build
-
-  clang:
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        clang:
-          - 3.6
-          - 3.7
-          - 3.9
-          - 5
-          - 7
-          - 9
-          - dev
-
-    name: "🐍 3 • Clang ${{ matrix.clang }} • x64"
-    container: "silkeh/clang:${{ matrix.clang }}"
-
-    steps:
-    - uses: actions/checkout@v2
-
-    - name: Add wget and python3
-      run: apt-get update && apt-get install -y python3-dev python3-numpy python3-pytest libeigen3-dev
-
-    - name: Configure
-      shell: bash
-      run: >
-        cmake -S . -B build
-        -DPYBIND11_WERROR=ON
-        -DDOWNLOAD_CATCH=ON
-        -DPYTHON_EXECUTABLE=$(python3 -c "import sys; print(sys.executable)")
-
-    - name: Build
-      run: cmake --build build -j 2
-
-    - name: Python tests
-      run: cmake --build build --target pytest
-
-    - name: C++ tests
-      run: cmake --build build --target cpptest
-
-    - name: Interface test
-      run: cmake --build build --target test_cmake_build
-
-  gcc:
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        gcc:
-          - 7
-          - latest
-
-    name: "🐍 3 • GCC ${{ matrix.gcc }} • x64"
-    container: "gcc:${{ matrix.gcc }}"
-
-    steps:
-    - uses: actions/checkout@v1
-
-    - name: Add Python 3
-      run: apt-get update; apt-get install -y python3-dev python3-numpy python3-pytest python3-pip libeigen3-dev
-
-    - name: Update pip
-      run: python3 -m pip install --upgrade pip
-
-    - name: Setup CMake 3.18
-      uses: jwlawson/[email protected]
-      with:
-        cmake-version: 3.18
-
-    - name: Configure
-      shell: bash
-      run: >
-        cmake -S . -B build
-        -DPYBIND11_WERROR=ON
-        -DDOWNLOAD_CATCH=ON
-        -DCMAKE_CXX_STANDARD=11
-        -DPYTHON_EXECUTABLE=$(python3 -c "import sys; print(sys.executable)")
-
-    - name: Build
-      run: cmake --build build -j 2
-
-    - name: Python tests
-      run: cmake --build build --target pytest
-
-    - name: C++ tests
-      run: cmake --build build --target cpptest
-
-    - name: Interface test
-      run: cmake --build build --target test_cmake_build
-
-  centos:
+  # Will be replaced by part of upstream's CI.
+  placeholder:
+    name: placeholder
     runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        centos:
-          - 7  # GCC 4.8
-          - 8
-
-    name: "🐍 3 • CentOS ${{ matrix.centos }} • x64"
-    container: "centos:${{ matrix.centos }}"
-
     steps:
-    - uses: actions/checkout@v2
-
-    - name: Add Python 3
-      run: yum update -y && yum install -y python3-devel gcc-c++ make git
-
-    - name: Update pip
-      run: python3 -m pip install --upgrade pip
-
-    - name: Install dependencies
-      run: python3 -m pip install cmake -r tests/requirements.txt --prefer-binary
-
-    - name: Configure
-      shell: bash
-      run: >
-        cmake -S . -B build
-        -DPYBIND11_WERROR=ON
-        -DDOWNLOAD_CATCH=ON
-        -DDOWNLOAD_EIGEN=ON
-        -DCMAKE_CXX_STANDARD=11
-        -DPYTHON_EXECUTABLE=$(python3 -c "import sys; print(sys.executable)")
-
-    - name: Build
-      run: cmake --build build -j 2
-
-    - name: Python tests
-      run: cmake --build build --target pytest
-
-    - name: C++ tests
-      run: cmake --build build --target cpptest
-
-    - name: Interface test
-      run: cmake --build build --target test_cmake_build
-
-  install-classic:
-    name: "🐍 3.5 • Debian • x86 •  Install"
-    runs-on: ubuntu-latest
-    container: i386/debian:stretch
-
-    steps:
-    - uses: actions/checkout@v1
-
-    - name: Install requirements
-      run: |
-        apt-get update
-        apt-get install -y git make cmake g++ libeigen3-dev python3-dev python3-pip
-        pip3 install "pytest==3.1.*"
-
-    - name: Configure for install
-      run: >
-        cmake .
-        -DPYBIND11_INSTALL=1 -DPYBIND11_TEST=0
-        -DPYTHON_EXECUTABLE=$(python3 -c "import sys; print(sys.executable)")
-
-    - name: Make and install
-      run: make install
-
-    - name: Copy tests to new directory
-      run: cp -a tests /pybind11-tests
-
-    - name: Make a new test directory
-      run: mkdir /build-tests
-
-    - name: Configure tests
-      run: >
-        cmake ../pybind11-tests
-        -DDOWNLOAD_CATCH=ON
-        -DPYBIND11_WERROR=ON
-        -DPYTHON_EXECUTABLE=$(python3 -c "import sys; print(sys.executable)")
-      working-directory: /build-tests
-
-    - name: Run tests
-      run: make pytest -j 2
-      working-directory: /build-tests
-
-
-  doxygen:
-    name: "Documentation build test"
-    runs-on: ubuntu-latest
-    container: alpine:3.12
-
-    steps:
-    - uses: actions/checkout@v2
-
-    - name: Install system requirements
-      run: apk add doxygen python3-dev
-
-    - name: Ensure pip
-      run: python3 -m ensurepip
-
-    - name: Install docs & setup requirements
-      run: python3 -m pip install -r docs/requirements.txt pytest setuptools
-
-    - name: Build docs
-      run: python3 -m sphinx -W -b html docs docs/.build
-
-    - name: Make SDist
-      run: python3 setup.py sdist
-
-    - name: Compare Dists (headers only)
-      run: |
-        python3 -m pip install --user -U ./dist/*
-        installed=$(python3 -c "import pybind11; print(pybind11.get_include(True) + '/pybind11')")
-        diff -rq $installed ./include/pybind11
+    - name: checkout
+      uses: actions/checkout@v2