ci: windows: requires msys2 shell for action-meson

.github/workflows/msys2.yml

@@ -90,7 +90,8 @@ jobs:
           path: crossfiles
       - name: Deploy cross-files
         run: |
-          echo "MESON_CROSS_FILES=$GITHUB_WORKSPACE\crossfiles" >> $GITHUB_ENV
+          cp $GITHUB_WORKSPACE\crossfiles\mingw64-arm-none-eabi-gcc.ini $GITHUB_WORKSPACE
+          echo "MESON_CROSS_FILES=$GITHUB_WORKSPACE" >> $GITHUB_ENV
       - name: Setup Rust toolchain
         uses: dtolnay/rust-toolchain@v1
         with:
@@ -103,20 +104,22 @@ jobs:
           compiler: gcc
           triple: arm-none-eabi
           ref: 13.2.Rel1
-
       - name: set safe dir for dunami (to be removed)
         run: |
           git config --global --add safe.directory '*'
       - name: defconfig
         run: |
           defconfig configs/nucleo_u5a5_autotest_defconfig
       - name: Meson Build
-        uses: outpost-os/action-meson@support-custom-pip-bin-name
-        with:
-          cross_files: ${{ format('{0}/{1}', env.MESON_CROSS_FILES, 'mingw64-arm-none-eabi-gcc.ini') }}
-          actions: '["prefetch", "setup", "compile"]'
-          options: '-Dconfig=.config -Ddts=dts/examples/nucleo_u5a5_autotest.dts -Ddts-include-dirs=dts'
-          pip: 'python3 -m pip'
+        run: |
+          meson subprojects download || true
+          meson subprojects foreach python3 -m pip install -r requirements.txt || true
+          meson setup -Dconfig=.config -Ddts=dts/examples/nucleo_u5a5_autotest.dts -Ddts-include-dirs=dts --cross-file mingw64-arm-none-eabi-gcc.ini builddir
+          ninja -C builddir
+          ninja -C builddir test
+          ninja -C builddir coverage
+          ninja -C builddir install
+          meson dist --no-tests --include-subprojects
         env:
           MSYS2_ARCH: x86_64
           MSYS2_CURSES: pdcurses