Add Windows Qt 6 build to GitHub actions

.github/workflows/win.yml

@@ -49,6 +49,7 @@ jobs:
     strategy:
       matrix:
         arch: [x64_x86, x64]
+        qt: ["", qt6]
         generator: ["", "Ninja Multi-Config"]
 
     env:
@@ -66,6 +67,7 @@ jobs:
           mkdir %userprofile%\TBuild\Libraries
           mklink /d %GITHUB_WORKSPACE%\TBuild %userprofile%\TBuild
           echo TBUILD=%GITHUB_WORKSPACE%\TBuild>>%GITHUB_ENV%
+          echo LibrariesPath=%GITHUB_WORKSPACE%\TBuild\Libraries${{ matrix.arch == 'x64' && '\win64' || '' }}>>%GITHUB_ENV%
 
       - name: Get repository name.
         shell: bash
@@ -118,17 +120,31 @@ jobs:
         id: cache-libs
         uses: actions/cache@v5
         with:
-          path: ${{ env.TBUILD }}\Libraries
+          path: |
+            ${{ env.LibrariesPath }}\*
+            !${{ env.LibrariesPath }}\cache_keys
+            !${{ env.LibrariesPath }}\[qQ]t[_-]*
+            ${{ env.LibrariesPath }}\cache_keys\*
+            !${{ env.LibrariesPath }}\cache_keys\[qQ]t[_-]*
           key: ${{ runner.OS }}-${{ matrix.arch }}-libs-${{ env.CACHE_KEY }}
           restore-keys: ${{ runner.OS }}-${{ matrix.arch }}-libs-
 
+      - name: Qt cache.
+        id: cache-qt
+        uses: actions/cache@v5
+        with:
+          path: |
+            ${{ env.LibrariesPath }}\[qQ]t[_-]*
+            ${{ env.LibrariesPath }}\cache_keys\[qQ]t[_-]*
+          key: ${{ runner.OS }}-${{ matrix.arch }}-${{ matrix.qt || 'qt' }}-${{ env.CACHE_KEY }}
+          restore-keys: ${{ runner.OS }}-${{ matrix.arch }}-${{ matrix.qt || 'qt' }}-
+
       - name: Libraries.
         env:
           GYP_MSVS_OVERRIDE_PATH: 'C:\Program Files\Microsoft Visual Studio\2022\Enterprise\'
           GYP_MSVS_VERSION: 2022
         run: |
-          cd %TBUILD%
-          %REPO_NAME%\Telegram\build\prepare\win.bat skip-release silent
+          %TBUILD%\%REPO_NAME%\Telegram\build\prepare\win.bat skip-release silent ${{ matrix.qt }}
 
       - name: Read configuration matrix.
         shell: bash
@@ -145,6 +161,10 @@ jobs:
             ARTIFACT_NAME="${ARTIFACT_NAME} ${{ matrix.arch }}"
           fi
 
+          if [ -n "${{ matrix.qt }}" ]; then
+            ARTIFACT_NAME="${ARTIFACT_NAME} ${{ matrix.qt }}"
+          fi
+
           GENERATOR=""
           if [ -n "${{ matrix.generator }}" ]; then
             GENERATOR="-G \"${{ matrix.generator }}\""
@@ -175,7 +195,7 @@ jobs:
 
       - name: Free up some disk space.
         shell: bash
-        run: find TBuild/Libraries '(' '(' ! '(' -name '*.lib' -o -name '*.a' -o -name '*.exe' -o -name '*.h' -o -name '*.hpp' -o -name '*.inc' -o -name '*.cmake' -o -path '*/include/*'  -o -path '*/objects-*' -o -path '*/cache_keys/*' -o -path '*/patches/*' ')' -type f ')' -o -empty ')' -delete
+        run: find $LibrariesPath '(' '(' ! '(' -name '*.lib' -o -name '*.a' -o -name '*.exe' -o -name '*.h' -o -name '*.hpp' -o -name '*.inc' -o -name '*.cmake' -o -path '*/include/*' -o -path '*/objects-*' -o -path '*/cache_keys/*' -o -path '*/patches/*' ')' -type f ')' -o -empty ')' -delete
 
       - name: Telegram Desktop build.
         if: env.ONLY_CACHE == 'false'
@@ -185,6 +205,7 @@ jobs:
           call configure.bat ^
           %TDESKTOP_BUILD_GENERATOR% ^
           %TDESKTOP_BUILD_ARCH% ^
+          ${{ matrix.qt }} ^
           %TDESKTOP_BUILD_API% ^
           -D CMAKE_CONFIGURATION_TYPES=Debug ^
           -D CMAKE_COMPILE_WARNING_AS_ERROR=ON ^