feat: support setup helpers

.appveyor.yml

@@ -11,37 +11,17 @@ environment:
   matrix:
   - PYTHON: 27
   - PYTHON: 36
-  - CONDA: 27
-  - CONDA: 36
 install:
 - cmd: '"%VS140COMNTOOLS%\..\..\VC\vcvarsall.bat" %PLATFORM%'
 - ps: |
-    if ($env:PYTHON) {
-      if ($env:PLATFORM -eq "x64") { $env:PYTHON = "$env:PYTHON-x64" }
-      $env:PATH = "C:\Python$env:PYTHON\;C:\Python$env:PYTHON\Scripts\;$env:PATH"
-      python -m pip install --disable-pip-version-check --user --upgrade pip setuptools
-    } elseif ($env:CONDA) {
-      if ($env:CONDA -eq "27") { $env:CONDA = "" }
-      if ($env:PLATFORM -eq "x64") { $env:CONDA = "$env:CONDA-x64" }
-      $env:PATH = "C:\Miniconda$env:CONDA\;C:\Miniconda$env:CONDA\Scripts\;$env:PATH"
-      conda config --set always_yes yes --set changeps1 no
-      conda config --add channels conda-forge
-      conda update -q conda
-      conda install -q conda-build
-    }
+    if ($env:PLATFORM -eq "x64") { $env:PYTHON = "$env:PYTHON-x64" }
+    $env:PATH = "C:\Python$env:PYTHON\;C:\Python$env:PYTHON\Scripts\;$env:PATH"
+    python -m pip install --disable-pip-version-check --upgrade --no-warn-script-location pip setuptools
 build_script:
 - ps: |
-    if ($env:PYTHON) {
-      python setup.py sdist
-      python -m pip install 'pybind11>=2.3'
-      cd dist
-      python -m pip install --verbose python_example-0.0.1.tar.gz
-      cd ..
-    } else {
-      echo "conda build conda.recipe"
-      conda build conda.recipe
-      echo "conda install --use-local python_example"
-      conda install --use-local python_example
-    }
+    python setup.py sdist
+    cd dist
+    python -m pip install --verbose python_example-0.0.1.tar.gz
+    cd ..
 test_script:
 - ps: python tests\test.py

.github/dependabot.yml

@@ -0,0 +1,11 @@
+version: 2
+updates:
+  # Maintain dependencies for GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"
+    ignore:
+      # Offical actions have moving tags like v1
+      # that are used, so they don't need updates here
+      - dependency-name: "actions/*"

.github/workflows/conda.yml

@@ -0,0 +1,45 @@
+name: Conda
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - master
+  pull_request:
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        platform: [ubuntu-latest, windows-latest, macos-latest]
+        python-version: ["3.6", "3.8"]
+
+    runs-on: ${{ matrix.platform }}
+
+    # The setup-miniconda action needs this to activate miniconda
+    defaults:
+      run:
+        shell: "bash -l {0}"
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Get conda
+        uses: conda-incubator/[email protected]
+        with:
+          python-version: ${{ matrix.python-version }}
+          channels: conda-forge,defaults
+          channel-priority: strict
+
+      - name: Prepare
+        run: conda install conda-build conda-verify
+
+      - name: Build
+        run: conda build conda.recipe
+
+      - name: Install
+        run: conda install -c ${CONDA_PREFIX}/conda-bld/ python_example
+
+      - name: Test
+        run: python tests/test.py

.github/workflows/pip.yml

@@ -0,0 +1,50 @@
+name: Pip
+
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        platform: [windows-latest, macos-latest, ubuntu-latest]
+        python-version: ["2.7", "3.5", "3.8", "3.9"]
+
+    runs-on: ${{ matrix.platform }}
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Add requirements
+      run: python -m pip install --upgrade wheel setuptools
+
+    # Eventually Microsoft might have an action for setting up
+    # MSVC, but for now, this action works:
+    - name: Prepare compiler environment for Windows 🐍 2.7
+      if: matrix.python-version == 2.7 && runner.os == 'Windows'
+      uses: ilammy/msvc-dev-cmd@v1
+      with:
+        arch: x64
+
+    # This makes two environment variables available in the following step(s)
+    - name: Set Windows 🐍 2.7 environment variables
+      if: matrix.python-version == 2.7 && runner.os == 'Windows'
+      shell: bash
+      run: |
+        echo "DISTUTILS_USE_SDK=1" >> $GITHUB_ENV
+        echo "MSSdk=1" >> $GITHUB_ENV
+
+    - name: Build and install
+      run: pip install --verbose .
+
+    - name: Test
+      run: python tests/test.py

.github/workflows/wheels.yml

@@ -0,0 +1,143 @@
+name: Wheels
+
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches:
+     - master
+  release:
+    types:
+      - published
+
+env:
+  CIBW_TEST_COMMAND: python {project}/tests/test.py
+  # This can be removed if pyproject.toml is used
+  CIBW_BEFORE_BUILD: pip install pybind11
+
+
+jobs:
+  build_sdist:
+    name: Build SDist
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-python@v2
+
+    - name: Install deps
+      run: python -m pip install "setuptools>=42" "setuptools_scm[toml]>=4.1.0" twine
+
+    - name: Build SDist
+      run: python setup.py sdist
+
+    - name: Check metadata
+      run: twine check dist/*
+
+    - uses: actions/upload-artifact@v2
+      with:
+        path: dist/*.tar.gz
+
+
+  build_wheels:
+    name: Wheels on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - uses: actions/setup-python@v2
+
+    - name: Install cibuildwheel
+      run: python -m pip install cibuildwheel==1.6.3
+
+    - name: Build wheel
+      run: python -m cibuildwheel --output-dir wheelhouse
+      env:
+        # Python 2.7 on Windows requires a workaround for C++11 support,
+        # built separately below
+        CIBW_SKIP: cp27-win*
+
+    - name: Show files
+      run: ls -lh wheelhouse
+      shell: bash
+
+    - name: Verify clean directory
+      run: git diff --exit-code
+      shell: bash
+
+    - name: Upload wheels
+      uses: actions/upload-artifact@v2
+      with:
+        path: wheelhouse/*.whl
+
+
+  # Windows 2.7 (requires workaround for MSVC 2008 replacement)
+  build_win27_wheels:
+    name: Py 2.7 wheels on Windows
+    runs-on: windows-latest
+
+    steps:
+    - uses: actions/checkout@v1
+      with:
+        submodules: true
+
+    - uses: actions/setup-python@v2
+
+    - name: Install cibuildwheel
+      run: python -m pip install cibuildwheel==1.6.3
+
+    - uses: ilammy/msvc-dev-cmd@v1
+
+    - name: Build 64-bit wheel
+      run: python -m cibuildwheel --output-dir wheelhouse
+      env:
+        CIBW_BUILD: cp27-win_amd64
+        DISTUTILS_USE_SDK: 1
+        MSSdk: 1
+
+    - uses: ilammy/msvc-dev-cmd@v1
+      with:
+        arch: x86
+
+    - name: Build 32-bit wheel
+      run: python -m cibuildwheel --output-dir wheelhouse
+      env:
+        CIBW_BUILD: cp27-win32
+        DISTUTILS_USE_SDK: 1
+        MSSdk: 1
+
+    - name: Show files
+      run: ls -lh wheelhouse
+      shell: bash
+
+    - name: Verify clean directory
+      run: git diff --exit-code
+      shell: bash
+
+    - uses: actions/upload-artifact@v2
+      with:
+        path: wheelhouse/*.whl
+
+
+  upload_all:
+    name: Upload if release
+    needs: [build_wheels, build_win27_wheels, build_sdist]
+    runs-on: ubuntu-latest
+    if: github.event_name == 'release' && github.event.action == 'published'
+
+    steps:
+    - uses: actions/setup-python@v2
+
+    - uses: actions/download-artifact@v2
+      with:
+        name: artifact
+        path: dist
+
+    - uses: pypa/[email protected]
+      with:
+        user: __token__
+        password: ${{ secrets.pypi_password }}