Build Windows binary using msys2

We drop support for Windows on x86, use only AMD64.

.github/workflows/build.yml

@@ -11,39 +11,40 @@ jobs:
         include:
           - os: macos-latest
             arch: arm64
+            shell: bash
           - os: macos-latest
             arch: x86_64
+            shell: bash
           - os: ubuntu-latest
             arch: i686
+            shell: bash
           - os: ubuntu-latest
             arch: x86_64
+            shell: bash
           - os: windows-latest
             arch: AMD64
-          - os: windows-latest
-            arch: x86
+            shell: 'msys2 {0}'
+    defaults:
+      run:
+        shell: ${{ matrix.shell }}
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
           python-version: 3.8
-      - name: Install nasm
-        if: matrix.os == 'windows-latest'
-        run: choco install -y nasm
-      - name: Install nmake
-        if: matrix.os == 'windows-latest'
-        run: |
-          & "C:\Program Files (x86)\Microsoft Visual Studio\Installer\vs_installer.exe" modify `
-           --installPath "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise" `
-           --add Microsoft.VisualStudio.Component.VC.Tools.x86.x64 --passive --norestart
-        shell: powershell
       - name: Install qemu
         if: matrix.os == 'ubuntu-latest'
         uses: docker/setup-qemu-action@v3
+      - uses: msys2/setup-msys2@v2
+        if: matrix.os == 'windows-latest'
+        with:
+          install: base-devel mingw-w64-x86_64-gcc mingw-w64-x86_64-gperf mingw-w64-x86_64-nasm
+          path-type: inherit
       - name: Build OpenSSL
         env:
           CIBW_ARCHS: ${{ matrix.arch }}
           CIBW_BEFORE_BUILD: python scripts/build-openssl.py /tmp/vendor
-          CIBW_BEFORE_BUILD_WINDOWS: scripts\build-openssl.bat C:\cibw\vendor
+          CIBW_BEFORE_BUILD_WINDOWS: python scripts\build-ffmpeg.py C:\cibw\vendor
           CIBW_BUILD: cp38-*
           CIBW_SKIP: '*-musllinux*'
           CIBW_TEST_COMMAND: python -c "import dummy"