cache .git folder

.github/workflows/build-linux.yml

@@ -26,6 +26,13 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+      - name: Restore .git folder
+        uses: actions/cache@v5
+        with:
+          path: .git
+          key: ${{ runner.os }}-git-${{ github.sha }}
+          restore-keys: ${{ runner.os }}-git-
+
       - name: Checkout repository
         uses: actions/checkout@v6
 
@@ -34,12 +41,15 @@ jobs:
         with:
           packages: build-essential ccache python3 python3-pip ninja-build libsdl2-dev libgl-dev libglu1-mesa-dev libpthread-stubs0-dev libglm-dev
           version: 1.0
+        run: |
+          python -m pip install meson
+          # Set a reasonable ccache size
+          ccache -M 5G || true
 
       - name: Install LLVM + libc++
         run: |
           wget -qO- https://apt.llvm.org/llvm.sh | sudo bash -s -- 20
           sudo apt-get install -y libc++-20-dev libc++abi-20-dev
-          ccache -M 5G || true # Set a reasonable ccache size
 
       - name: Restore ccache
         uses: actions/cache@v5