Conda packages released for cuda-python to the nvidia channel depend on cuda-toolkit, i.e. the entire CUDA Toolkit.

https://anaconda.org/nvidia/cuda-python/files?version=12.0.0

The cuda-python package should declare dependencies only on components that are actually used, which might be a more limited subset like these, which I found by reading extern from declarations:

• cuda-cudart-dev for cuda.h, cuda_runtime.h, driver_types.h, and other headers in https://github.com/NVIDIA/cuda-python/blob/main/cuda/ccudart.pxd.in
• cuda-nvrtc-dev for nvrtc.h

  cuda-python/cuda/cnvrtc.pxd.in

  Line 11 in 9ac2d31

  cdef extern from "nvrtc.h":

• cuda-profiler-api for cudaProfiler.h

  cuda-python/cuda/ccuda.pxd.in

  Line 1868 in 9ac2d31

  cdef extern from "cudaProfiler.h":

• (Others?)