Bug#1060075: gcc-13 FTCBFS: target system type set to nvptx-unknown-none

[Matthias Klose]

> My understanding is that both the host and target system type
> should be aarch64-unknown-linux-gnu instead.
no, the target is always nvptx-unknown-none.

and the package should be part of a cross build, you want to have the 
same set of packages.