Confusion regarding rust packages in guix

[Abdullah Imad <me@imad.nyc>]

Hello,


I'm trying to package [helix](https://github.com/helix-editor/helix), a 
text editor written in rust. I'm unsure how to write the actual package 
though. The layout is seemingly straight forward - I found a random rust 
package already in guixpkgs and just copied the config - but when it 
comes to `cargo-inputs` and `cargo-development-inputs`, I'm not sure 
what to do. Do I have to define every single variable in `cargo.lock`? 
For bigger projects this seems like an incredible amount of work. Why 
does the guix system require packages to be pulled from guix repos when 
nix just reads the `cargo.lock` and pulls it from crates.io or 
something? Is that not also deterministic, since that's the entire point 
of the `cargo.lock` file? In the flake that helix provides : 
https://github.com/helix-editor/helix/blob/master/flake.nix , the 
individual dependencies are not defined. Am I missing something, or is 
this just how its done?


Thanks,

Abdullah Imad