Alternative Cargo registries

Initially added:

For various reasons, you may not want to publish code to crates.io, but you may want to share it with others. For example, maybe your company writes Rust code that's not open source, but you'd still like to use these internal packages.

Cargo supports alternative registries by settings in .cargo/config:

[registries]
my-registry = { index = "https://my-intranet:7878/git/index" }

When you want to depend on a package from another registry, you add that in to your Cargo.toml:

[dependencies]
other-crate = { version = "1.0", registry = "my-registry" }

To learn more, check out the registries section of the Cargo book.