message: COMP: provide nvcc location to CMake package CUDAToolkit
  nvcc is found by find_language(CUDA) but the language is not immediately
  set to let cmake check CMake and CUDA version
diff: @@ -9,6 +9,7 @@ check_language(CUDA)
  # Determine default value for RTK_USE_CUDA
  set(RTK_USE_CUDA_DEFAULT OFF)
  if (CMAKE_CUDA_COMPILER)
  + set(CUDAToolkit_NVCC_EXECUTABLE ${CMAKE_CUDA_COMPILER})
  find_package(CUDAToolkit)
  if(NOT CUDAToolkit_FOUND)
  message(WARNING "CUDAToolkit not found (available since CMake v3.17). RTK_USE_CUDA set to OFF.")
  