try installiing directly

.github/workflows/anari-visionaray-ci.yml

@@ -18,23 +18,37 @@ jobs:
     steps:
     - uses: actions/checkout@v3
 
+    - name: Add NVIDIA package repositories
+      if: >-
+        matrix.os == 'ubuntu-24.04' &&
+        matrix.cuda == 'ON'
+      run: |
+        wget https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2204/x86_64/cuda-ubuntu2204.pin
+        sudo mv cuda-ubuntu2204.pin /etc/apt/preferences.d/cuda-repository-pin-600
+        sudo apt-key adv --fetch-keys https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2204/x86_64/3bf863cc.pub
+        sudo add-apt-repository "deb https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2204/x86_64/ /"
+        sudo apt update
+
     - name: Install CUDA
       if: >-
         matrix.os == 'ubuntu-24.04' &&
         matrix.cuda == 'ON'
-      uses: Jimver/[email protected]
-      id: cuda-toolkit
-      with:
-        cuda: '12.5.0'
+      run: sudo apt-get install -y cuda-toolkit-12-6
 
     - name: Setup CUDA
       if: >-
         matrix.os == 'ubuntu-24.04' &&
         matrix.cuda == 'ON'
       run: |
-        echo "CUDA_PATH=/usr/local/cuda-12.5" >> $GITHUB_ENV
-        echo "/usr/local/cuda-12.5/bin" >> $GITHUB_PATH
-        nvcc -V
+        echo "CUDA_HOME=/usr/local/cuda-12.6" >> $GITHUB_ENV
+        echo "$CUDA_HOME/bin" >> $GITHUB_PATH
+        echo "LD_LIBRARY_PATH=$CUDA_HOME/lib64:$LD_LIBRARY_PATH" >> $GITHUB_ENV
+
+    - name: Verify CUDA installation
+      if: >-
+        matrix.os == 'ubuntu-24.04' &&
+        matrix.cuda == 'ON'
+      run: /usr/local/cuda-12.6/bin/nvcc --version
 
     - name: Install Packages
       if: ${{ matrix.os == 'ubuntu-24.04' }}
@@ -78,7 +92,7 @@ jobs:
          -DVSNRAY_ENABLE_VIEWER:BOOL=OFF \
          -DVSNRAY_ENABLE_COMMON:BOOL=OFF \
          -DVSNRAY_ENABLE_CUDA:BOOL=${{ matrix.cuda }} \
-         -DVSNRAY_ENABLE_TBB:BOOL=OFF \
+         -DVSNRAY_ENABLE_TBB:BOOL=OFF
         cmake --build visionaray/build --target install
 
     - name: Configure CMake