ci: use ninja on windows

.ci/compile.sh

@@ -140,13 +140,7 @@ cmake .. "${flags[@]}"
 echo "::endgroup::"
 
 echo "::group::Build project"
-if [[ $RUNNER_OS == Windows ]]; then
-  # Enable MTT, see https://devblogs.microsoft.com/cppblog/improved-parallelism-in-msbuild/
-  # and https://devblogs.microsoft.com/cppblog/cpp-build-throughput-investigation-and-tune-up/#multitooltask-mtt
-  cmake --build . "${buildflags[@]}" -- -p:UseMultiToolTask=true -p:EnableClServerMode=true
-else
-  cmake --build . "${buildflags[@]}"
-fi
+cmake --build . "${buildflags[@]}"
 echo "::endgroup::"
 
 if [[ $USE_CCACHE ]]; then

.github/workflows/desktop-build.yml

@@ -377,19 +377,15 @@ jobs:
     needs: configure
     runs-on: windows-2022
     env:
-      CMAKE_GENERATOR: 'Visual Studio 17 2022'
+      CMAKE_GENERATOR: 'Ninja'
 
     steps:
-      - name: Add msbuild to PATH
-        id: add-msbuild
-        uses: microsoft/setup-msbuild@v2
-        with:
-          msbuild-architecture: x64
-
       - name: Checkout
         uses: actions/checkout@v4
         with:
           submodules: recursive
+      - name: Setup MSVC
+        uses: ilammy/msvc-dev-cmd@v1
 
       - name: Install Qt ${{matrix.qt_version}}
         uses: jurplel/install-qt-action@v4