O pacote nvidia-cuda-toolkit
é um software non-free
, edite seu /etc/apt/sources.list
adicionando o componente non-free
:
apt edit-sources
Em seguida, edite suas fontes, há um exemplo:
deb http://deb.debian.org/debian stretch main contrib non-free
salve e execute:
apt update
apt install nvidia-cuda-toolkit
main consists of DFSG-compliant packages, which do not rely on software outside this area to operate. These are the only packages considered part of the Debian distribution.
contrib packages contain DFSG-compliant software, but have dependencies not in main (possibly packaged for Debian in non-free).
non-free contains software that does not comply with the DFSG.