rust: where is cargo?

[Todor Kondić]

Hello,

I have been playing with rust and the first thing I noticed with the guix 
installation is that there is no cargo. More accurately, there is indeed an 
output of the rust package called "cargo" and there are entries for cargo with 
bin paths in the store, but nothing that ends up in the PATH variable 
(etc/profile).

So, what's the deal here? I know that guix approach is to replace package 
managers, but cargo is more than that and, at least, a tool needed to follow 
the rust book while learning.