I have cuda 9.1 why it requires 10.2 dependency?

Accelerated Computing CUDA CUDA Setup and Installation
1

I have ubuntu 16.04 and CUDA 9.1, driver version 410.

I encountered the problem that no matter what I want to install, it gives me error, e.g.

apt-get install libtool

it always prompts me:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
 cuda-libraries-dev-10-2 : Depends: libcublas-dev (>= 10.2.2.89) but it is not going to be installed
 cuda-samples-10-2 : Depends: libcublas-dev (>= 10.2.2.89) but it is not going to be installed
 cuda-visual-tools-10-2 : Depends: libcublas-dev (>= 10.2.2.89) but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

But I’m not using any CUDA 10.2 package! Why it requires dependency of that???

$ nvcc --version
nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2017 NVIDIA Corporation
Built on Fri_Nov__3_21:07:56_CDT_2017
Cuda compilation tools, release 9.1, V9.1.85

And

apt-get -f

doesn’t help at all