Update build_qt.yml

Signed-off-by: Cédrik Fuoco <[email protected]>

.github/workflows/build_qt.yml

@@ -20,16 +20,14 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: [macos-14]
+          - os: macos-14
             qt-version: "5.15.15"
             python3-version: "3.11.9"
             python2-version: "2.7.18"
+            # Use XCode 14 because Qt compilation does not seem
+            # to work on XCode 15, and because XCode 14 makes more
+            # sense because it is older (just like Qt 5.15).
             xcode-version: "14.3.1"
-          - os: [macos-14]
-            qt-version: "5.15.15"
-            python3-version: "3.11.9"
-            python2-version: "2.7.18"
-            xcode-version: "15.4"
 
     steps:
       - name: Switch to XCode 14
@@ -150,7 +148,13 @@ jobs:
           make install -j$(python -c 'import os; print(os.cpu_count())')
         working-directory: ${{ github.workspace }}/qt-build
 
-      - name: Display release folder
+      - name: Display release folder and architecture
         run: |
-          ls -al ./release
-        working-directory: ${{ github.workspace }}/qt-build
+          ls -al ./qt-release
+          file ./qt-release/bin/qmake
+
+      - name: Cache Qt ${{ matrix.qt-version }}
+        uses: actions/cache@v4
+        with:
+          path: ./qt-release
+          key: arm64-qt-${{ matrix.qt-version }}