Hi,Some of cargo packages require rust-1.61 or higher. Currently, there is no way to build them with Guix because of this issue.
So I think cargo-build-system (and other build-systems?) should be able to specify the version of rust. As of now, it accepts #:rust keyword, but there is no package to pass it to (because the packages named rust-1.* are not public).
Providing newer Rust packages are needed in this regard as well. ROCKTAKEY
