[R-pkg-devel] Indicate dependency on kitty in DESCRIPTION

[Jan van der Laan]

I have a package, which I am thinking to submit to CRAN. It can output 
graphics/plots to the kitty terminal (https://sw.kovidgoyal.net/kitty/). 
However, I am not sure if and how I should indicate the dependency on 
kitty. The package builds and installs fine without kitty. However, you 
can't really use it without it (it will generate errors when you try).

Two possible fields in the DESCRIPTION could be:

SystemRequirements: kitty

And since, kitty only runs on macos and linux:

OS_type: unix

Should I add these? Like above?

Thanks!

Jan