Use cibuildwheel to build wheels (#70)

The cibuildwheel infra seems to be mature enough, so use it for the
wheel-building step instead of the homegrown setup.  This gives us
32-bit and ARM wheels for free.

Fixes: #44
Fixes: #63

5 files changed, 59 insertions, 100 deletions

diff --git a/.github/workflows/build-manylinux-wheels.sh b/.github/workflows/build-manylinux-wheels.sh
deleted file mode 100755
index 0fdaf57..0000000
--- a/.github/workflows/build-manylinux-wheels.sh
+++ /dev/null
@@ -1,28 +0,0 @@
-#!/bin/bash
-
-set -e -x
-
-PY_MAJOR=${PYTHON_VERSION%%.*}
-PY_MINOR=${PYTHON_VERSION#*.}
-
-ML_PYTHON_VERSION="cp${PY_MAJOR}${PY_MINOR}-cp${PY_MAJOR}${PY_MINOR}"
-if [ "${PY_MAJOR}" -lt "4" -a "${PY_MINOR}" -lt "8" ]; then
-    ML_PYTHON_VERSION+="m"
-fi
-
-# Temporary workaround for https://github.com/actions/runner/issues/781
-export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/usr/local/lib
-
-# Compile wheels
-PYTHON="/opt/python/${ML_PYTHON_VERSION}/bin/python"
-PIP="/opt/python/${ML_PYTHON_VERSION}/bin/pip"
-"${PIP}" install --upgrade setuptools pip wheel
-cd "${GITHUB_WORKSPACE}"
-make clean
-"${PYTHON}" setup.py bdist_wheel
-
-# Bundle external shared libraries into the wheels.
-for whl in "${GITHUB_WORKSPACE}"/dist/*.whl; do
-    auditwheel repair $whl -w "${GITHUB_WORKSPACE}"/dist/
-    rm "${GITHUB_WORKSPACE}"/dist/*-linux_*.whl
-done
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 7e2c51b..fb948c2 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -35,7 +35,7 @@ jobs:
         mkdir -p dist/
         echo "${VERSION}" > dist/VERSION
 
-    - uses: actions/upload-artifact@v1
+    - uses: actions/upload-artifact@v2
       with:
         name: dist
         path: dist/
@@ -50,34 +50,30 @@ jobs:
         fetch-depth: 50
         submodules: true
 
-    - name: Set up Python 3.7
-      uses: actions/setup-python@v2
-      with:
-        python-version: 3.7
+    - uses: actions/setup-python@v2
 
     - name: Build source distribution
       run: |
-        pip install -U setuptools wheel pip
+        python -m pip install -U setuptools wheel pip
         python setup.py sdist
 
-    - uses: actions/upload-artifact@v1
+    - uses: actions/upload-artifact@v2
       with:
         name: dist
-        path: dist/
+        path: dist/*.tar.*
 
   build-wheels:
     needs: validate-release-request
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python-version: [3.5, 3.6, 3.7, 3.8, 3.9]
-        os: [ubuntu-16.04, macos-latest, windows-latest]
-        exclude:
-          # Python 3.5 is unable to properly
-          # find the recent VS tooling
-          # https://bugs.python.org/issue30389
-          - os: windows-latest
-            python-version: 3.5
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        cibw_arch: [auto]
+        include:
+          - os: ubuntu-latest
+            cibw_arch: aarch64
+          - os: macos-latest
+            cibw_arch: universal2
 
     steps:
     - uses: actions/checkout@v2
@@ -85,45 +81,30 @@ jobs:
         fetch-depth: 50
         submodules: true
 
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+    - name: Set up QEMU
+      if: matrix.os == 'ubuntu-latest' && matrix.cibw_arch == 'aarch64'
+      uses: docker/setup-qemu-action@v1
       with:
-        python-version: ${{ matrix.python-version }}
-
-    - name: Install Python Deps
-      run: |
-        python -m pip install --upgrade setuptools pip wheel
+        platforms: arm64
 
-    - name: Test
-      run: |
-        make debug && make test
-
-    - name: Build Wheels (linux)
-      if: startsWith(matrix.os, 'ubuntu')
-      uses: docker://quay.io/pypa/manylinux1_x86_64
+    - uses: pypa/cibuildwheel@v2.0.1
       env:
-        PYTHON_VERSION: ${{ matrix.python-version }}
-      with:
-        entrypoint: /github/workspace/.github/workflows/build-manylinux-wheels.sh
-
-    - name: Build Wheels (non-linux)
-      if: "!startsWith(matrix.os, 'ubuntu')"
-      run: |
-        make clean
-        python setup.py bdist_wheel
-
-    - name: Test Wheels
-      shell: bash
-      if: |
-        !contains(github.event.pull_request.labels.*.name, 'skip wheel tests')
-      run: |
-        pip install --pre immutables -f "file:///${GITHUB_WORKSPACE}/dist"
-        make -C "${GITHUB_WORKSPACE}" testinstalled
-
-    - uses: actions/upload-artifact@v1
+        CIBW_BUILD_VERBOSITY: 1
+        CIBW_BUILD: "cp36-* cp37-* cp38-* cp39-*"
+        CIBW_ARCHS: ${{ matrix.cibw_arch }}
+        CIBW_MANYLINUX_X86_64_IMAGE: quay.io/pypa/manylinux1_x86_64
+        CIBW_MANYLINUX_I686_IMAGE: quay.io/pypa/manylinux1_i686
+        CIBW_SKIP: "pp*"
+        CIBW_TEST_EXTRAS: "test"
+        CIBW_TEST_COMMAND: "cd .. && python {project}/tests/__init__.py"
+        CIBW_TEST_COMMAND_WINDOWS: "cd .. && python {project}\\tests\\__init__.py"
+        CIBW_TEST_SKIP: "*universal2:arm64"
+        CIBW_ENVIRONMENT: "IMMU_SKIP_MYPY_TESTS=1"
+
+    - uses: actions/upload-artifact@v2
       with:
         name: dist
-        path: dist/
+        path: wheelhouse/*.whl
 
   publish:
     needs: [build-sdist, build-wheels]
@@ -135,7 +116,7 @@ jobs:
         fetch-depth: 5
         submodules: false
 
-    - uses: actions/download-artifact@v1
+    - uses: actions/download-artifact@v2
       with:
         name: dist
         path: dist/
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index b331620..ec9ae1d 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -43,6 +43,8 @@ jobs:
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v2
       if: steps.release.outputs.version == 0
+      env:
+        PIP_DISABLE_PIP_VERSION_CHECK: 1
       with:
         python-version: ${{ matrix.python-version }}
         architecture: ${{ matrix.arch }}
diff --git a/.gitignore b/.gitignore
index 07d9825..e441557 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,3 +21,4 @@ __pycache__/
 /.coverage
 /.mypy_cache
 /.venv*
+/wheelhouse
diff --git a/tests/test_mypy.py b/tests/test_mypy.py
index 48c7f7f..fcdc11c 100644
--- a/tests/test_mypy.py
+++ b/tests/test_mypy.py
@@ -1,23 +1,26 @@
 import os
-import mypy.test.testcmdline
-from mypy.test.helpers import normalize_error_messages
 
-
-# I'm upset. There's no other way to deal with the little 'defined here'
-# notes that mypy emits when passing an unexpected keyword argument
-# and at no other time.
-def renormalize_error_messages(messages):
-    messages = [x for x in messages if not x.endswith(' defined here')]
-    return normalize_error_messages(messages)
-
-
-mypy.test.testcmdline.normalize_error_messages = renormalize_error_messages
-
-
-this_file_dir = os.path.dirname(os.path.realpath(__file__))
-test_data_prefix = os.path.join(this_file_dir, 'test-data')
-
-
-class ImmuMypyTest(mypy.test.testcmdline.PythonCmdlineSuite):
-    data_prefix = test_data_prefix
-    files = ['check-immu.test']
+try:
+    import mypy.test.testcmdline
+    from mypy.test.helpers import normalize_error_messages
+except (ImportError, AssertionError):
+    if os.environ.get('IMMU_SKIP_MYPY_TESTS'):
+        pass
+    else:
+        raise
+else:
+    # I'm upset. There's no other way to deal with the little 'defined here'
+    # notes that mypy emits when passing an unexpected keyword argument
+    # and at no other time.
+    def renormalize_error_messages(messages):
+        messages = [x for x in messages if not x.endswith(' defined here')]
+        return normalize_error_messages(messages)
+
+    mypy.test.testcmdline.normalize_error_messages = renormalize_error_messages
+
+    this_file_dir = os.path.dirname(os.path.realpath(__file__))
+    test_data_prefix = os.path.join(this_file_dir, 'test-data')
+
+    class ImmuMypyTest(mypy.test.testcmdline.PythonCmdlineSuite):
+        data_prefix = test_data_prefix
+        files = ['check-immu.test']