> Same here for libc crate after the update, but I guess that's > because cargo is currently packaged and used from the bootstrap > rust, which is dated one version before the actual rustc you can > use now, so 0.13.0 cargo and 0.14.0 rustc.
I submitted some experimental patches to the ML which fix this. Since you have I assume a web application that is written in rust, and you want to deploy it using guixsd, I think that vendoring the dependencies like the example cargo package is what you should do. The goal of using guixsd is fixing the deployment problem. If you vendor your dependencies and deploy your application like the example cargo package you should get an environment that is controlled 100% by your company. Would be awesome to see some real commercial webapps deployed using guixsd!