Hi guys, it's very nice to meet you in this deepin forum.I try to install deepin graphic driver at https://www.deepin.org/en/original/deepin-graphics-driver-manager/

but first I have to "install all dependencies".

if not then this statement show up:

~$ sudo apt build-dep
E: Must specify at least one package to check builddeps for 

How could I do that? thankyou for your attention