ci: debug nvcc

Author: mrava87

.github/workflows/buildcupy.yaml

@@ -43,12 +43,11 @@ jobs:
       - name: Check cuda versions
         run: |
           srun --account=yuxilab -n 1 -N 1 --gres=gpu:L40S:1 bash -c 'ls /u/yuxihong/workspace/cuda/'
+      - name: Install CUDA 12.8 toolkit
+        run: uv add nvidia-cuda-nvcc-cu12==12.8.*
       - name: Test with pytest
         run: |
           srun --account=yuxilab -n 1 -N 1 --gres=gpu:L40S:1 bash -c '
-            uv add nvidia-cuda-nvcc-cu12==12.8.\* &&
-            export NUMBA_FORCE_CUDA_CC=8.6
-            export NUMBA_CUDA_DEFAULT_PTX_CC=8.6
             export CUPY_PYLOPS=1
             export TEST_CUPY_PYLOPS=1
             uv run pytest --color=yes pytests/