Move MSYS2 to GitHub Actions

.appveyor.yml

@@ -16,12 +16,6 @@ environment:
     ARCHITECTURE: x86
   - PYTHON: C:/Python35-x64
     ARCHITECTURE: x64
-  - PYTHON: C:/msys64/mingw32
-    EXECUTABLE: bin/python3
-    ARCHITECTURE: x86
-    PIP_DIR: bin
-    TEST_OPTIONS: --processes=0
-    DEPLOY: NO
 
 
 install:
@@ -35,31 +29,15 @@ install:
 - path c:\nasm-2.14.02;C:\Program Files (x86)\gs\gs9.52\bin;%PATH%
 - cd c:\pillow\winbuild\
 - ps: |
-      if ($env:PYTHON -eq "c:/msys64/mingw32")
-      {
-        c:\msys64\usr\bin\bash -l -c c:\\pillow\\winbuild\\appveyor_install_msys2_deps.sh
-      }
-      else
-      {
         c:\python37\python.exe c:\pillow\winbuild\build_prepare.py -v --depends=C:\pillow-depends\
         c:\pillow\winbuild\build\build_dep_all.cmd
         $host.SetShouldExit(0)
-      }
 - path C:\pillow\winbuild\build\bin;%PATH%
 
 build_script:
 - ps: |
-      if ($env:PYTHON -eq "c:/msys64/mingw32")
-      {
-        c:\msys64\usr\bin\bash -l -c c:\\pillow\\winbuild\\appveyor_build_msys2.sh
-        Write-Host "through install"
-        $host.SetShouldExit(0)
-      }
-      else
-      {
         c:\pillow\winbuild\build\build_pillow.cmd install
         $host.SetShouldExit(0)
-      }
 - cd c:\pillow
 - '%PYTHON%\%EXECUTABLE% selftest.py --installed'
 

.github/workflows/test-windows.yml

@@ -154,3 +154,76 @@ jobs:
       with:
         name: ${{ steps.wheel.outputs.dist }}
         path: dist\*.whl
+
+  msys:
+    runs-on: windows-2019
+
+    strategy:
+      fail-fast: false
+      matrix:
+        mingw: ["MINGW32", "MINGW64"]
+        include:
+          - mingw: "MINGW32"
+            package: "mingw-w64-i686"
+          - mingw: "MINGW64"
+            package: "mingw-w64-x86_64"
+
+    defaults:
+      run:
+        shell: bash.exe --login "{0}"
+    env:
+      MSYSTEM: ${{ matrix.mingw }}
+      CHERE_INVOKING: 1
+
+    timeout-minutes: 30
+    name: MSYS2 ${{ matrix.mingw }}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up shell
+        run: echo ::add-path::C:\msys64\usr\bin\
+        shell: pwsh
+
+      - name: Install Dependencies
+        run: |
+          pacman -S --noconfirm \
+              ${{ matrix.package }}-python3-pip \
+              ${{ matrix.package }}-python3-setuptools \
+              ${{ matrix.package }}-python3-pytest \
+              ${{ matrix.package }}-python3-pytest-cov \
+              ${{ matrix.package }}-python3-cffi \
+              ${{ matrix.package }}-python3-olefile \
+              ${{ matrix.package }}-python3-numpy \
+              ${{ matrix.package }}-python3-pyqt5 \
+              ${{ matrix.package }}-python3-numpy \
+              ${{ matrix.package }}-freetype \
+              ${{ matrix.package }}-lcms2 \
+              ${{ matrix.package }}-libwebp \
+              ${{ matrix.package }}-libjpeg-turbo \
+              ${{ matrix.package }}-openjpeg2 \
+              ${{ matrix.package }}-libimagequant \
+              ${{ matrix.package }}-libraqm \
+              ${{ matrix.package }}-ghostscript \
+              subversion
+
+          python3 -m pip install pyroma
+
+          pushd depends && ./install_extra_test_images.sh && popd
+
+      - name: Build Pillow
+        run: |
+          # libtiff is unable to open files
+          CFLAGS="-coverage" python3 setup.py build_ext --disable-tiff install
+
+      - name: Test Pillow
+        run: |
+          python3 selftest.py --installed
+          python3 -m pytest -vx --cov PIL --cov Tests --cov-report term --cov-report xml Tests
+
+      - name: Upload coverage
+        run: |
+          python3 -m pip install codecov
+          bash <(curl -s https://codecov.io/bash) -F GHA_Windows
+        env:
+          CODECOV_NAME: MSYS2 ${{ matrix.mingw }}

Tests/helper.py

@@ -288,6 +288,12 @@ def is_pypy():
     return hasattr(sys, "pypy_translation_info")
 
 
+def is_mingw():
+    import sysconfig
+
+    return sysconfig.get_platform() == "mingw"
+
+
 if sys.platform == "win32":
     IMCONVERT = os.environ.get("MAGICK_HOME", "")
     if IMCONVERT:

Tests/test_imagefont.py

@@ -13,6 +13,7 @@
     assert_image_equal,
     assert_image_similar,
     assert_image_similar_tofile,
+    is_mingw,
     is_pypy,
     is_win32,
     skip_unless_feature,
@@ -660,6 +661,7 @@ def test_variation_get(self):
             {"name": b"Size", "minimum": 0, "maximum": 300, "default": 0}
         ]
 
+    @pytest.mark.skipif(is_mingw(), reason="epsilon too high for meaningful test")
     def test_variation_set_by_name(self):
         font = self.get_font()
 
@@ -692,6 +694,7 @@ def _check_text(font, path, epsilon):
             font.set_variation_by_name(name)
         _check_text(font, "Tests/images/variation_tiny_name.png", 40)
 
+    @pytest.mark.skipif(is_mingw(), reason="epsilon too high for meaningful test")
     def test_variation_set_by_axes(self):
         font = self.get_font()
 

Tests/test_imagefontctl.py

@@ -60,7 +60,7 @@ def test_complex_unicode_text():
 
     target = "Tests/images/test_complex_unicode_text2.png"
     with Image.open(target) as target_img:
-        assert_image_similar(im, target_img, 2.3)
+        assert_image_similar(im, target_img, 2.33)
 
 
 def test_text_direction_rtl():

setup.py

@@ -711,7 +711,7 @@ def build_extensions(self):
         if feature.jpeg2000:
             libs.append(feature.jpeg2000)
             defs.append(("HAVE_OPENJPEG", None))
-            if sys.platform == "win32":
+            if sys.platform == "win32" and not PLATFORM_MINGW:
                 defs.append(("OPJ_STATIC", None))
         if feature.zlib:
             libs.append(feature.zlib)

src/_imagingft.c

@@ -31,7 +31,7 @@
 
 #define KEEP_PY_UNICODE
 
-#if !defined(_MSC_VER)
+#ifndef _WIN32
 #include <dlfcn.h>
 #endif
 
@@ -155,20 +155,25 @@ setraqm(void)
     p_raqm.raqm = NULL;
 
     /* Microsoft needs a totally different system */
-#if !defined(_MSC_VER)
+#ifndef _WIN32
     p_raqm.raqm = dlopen("libraqm.so.0", RTLD_LAZY);
     if (!p_raqm.raqm) {
         p_raqm.raqm = dlopen("libraqm.dylib", RTLD_LAZY);
     }
 #else
     p_raqm.raqm = LoadLibrary("libraqm");
+
+    /* Cygwin / MinGW */
+    if (!p_raqm.raqm) {
+        p_raqm.raqm = LoadLibrary("libraqm-0");
+    }
 #endif
 
     if (!p_raqm.raqm) {
         return 1;
     }
 
-#if !defined(_MSC_VER)
+#ifndef _WIN32
     p_raqm.version_atleast = (t_raqm_version_atleast)dlsym(p_raqm.raqm, "raqm_version_atleast");
     p_raqm.create = (t_raqm_create)dlsym(p_raqm.raqm, "raqm_create");
     p_raqm.set_text = (t_raqm_set_text)dlsym(p_raqm.raqm, "raqm_set_text");