Marius Bakke <mbakke@fastmail.com> writes:

> Have anyone packaged any of these?  Or made a Rust importer?

I know nothing about Rust, but "(guix) Invoking 'guix import'" mentions
'crate':

--8<---------------cut here---------------start------------->8---
‘crate’
     Import metadata from the crates.io Rust package repository
     crates.io (https://crates.io).
--8<---------------cut here---------------end--------------->8---

-- 
Pierre Neidhardt