use default nvidia-smi as fallback when on WSL2

scripts/install.sh

@@ -173,6 +173,11 @@ fi
 # WSL2 only supports GPUs via nvidia passthrough
 # so check for nvidia-smi to determine if GPU is available
 if [ "$IS_WSL2" = true ]; then
+    # WSL2 has nvidia-smi installed by default,
+    # we add its folder to the end of the PATH as a fallback.
+    if [ -x /usr/lib/wsl/lib/nvidia-smi ]; then
+        export PATH=${PATH}:/usr/lib/wsl/lib
+    fi
     if available nvidia-smi && [ -n "$(nvidia-smi | grep -o "CUDA Version: [0-9]*\.[0-9]*")" ]; then
         status "Nvidia GPU detected."
     fi