thing 1

meiseman@appa ~ % sudo apt upgrade
[sudo] password for meiseman:
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies:
 cuda-libraries-dev-10-1 : Depends: libcublas-dev (>= 10.1.0.105) but it is not installed
 cuda-samples-10-1 : Depends: libcublas-dev (>= 10.1.0.105) but it is not installed
 cuda-visual-tools-10-1 : Depends: libcublas-dev (>= 10.1.0.105) but it is not installed
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).

thing 2

meiseman@appa ~ % sudo apt --fix-broken install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer required:
  libnvidia-common-390 libwayland-client0:i386 libwayland-server0:i386
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
  libcublas-dev
The following NEW packages will be installed:
  libcublas-dev
0 upgraded, 1 newly installed, 0 to remove and 23 not upgraded.
58 not fully installed or removed.
Need to get 0 B/39.9 MB of archives.
After this operation, 115 MB of additional disk space will be used.
Do you want to continue? [Y/n] yes
Get:1 file:/var/cuda-repo-10-1-local-10.1.105-418.39  libcublas-dev 10.1.0.105-1 [39.9 MB]
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
	LANGUAGE = (unset),
	LC_ALL = (unset),
	LC_CTYPE = "UTF-8",
	LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to a fallback locale ("en_US.UTF-8").
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
(Reading database ... 253990 files and directories currently installed.)
Preparing to unpack .../libcublas-dev_10.1.0.105-1_amd64.deb ...
Unpacking libcublas-dev (10.1.0.105-1) ...
dpkg: error processing archive /var/cuda-repo-10-1-local-10.1.105-418.39/./libcublas-dev_10.1.0.105-1_amd64.deb (--unpack):
 trying to overwrite '/usr/include/cublas_v2.h', which is also in package nvidia-cuda-dev 9.1.85-3ubuntu1
dpkg-deb: error: paste subprocess was killed by signal (Broken pipe)
Errors were encountered while processing:
 /var/cuda-repo-10-1-local-10.1.105-418.39/./libcublas-dev_10.1.0.105-1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)