Private Crate Models

When specifying Rust dependencies in a crate's Cargo.toml file, the normal case is adding an open source crate hosted at Crates.io:

# Cargo.toml

[dependencies]
uuid = "1.2"
rand = "*"
serde_json = "1.0.87"

These dependencies, which merely require a name and version range, are actually a form of "registry" dependency, with the registry (Crates.io) implied -- Cargo assumes Crates.io is the intended registry unless another registry is specified.

But for adding private crates as dependencies, there are several other approaches, each of which offer advantages and disadvantages, including:

• Path-based dependencies
• Git-based dependencies
• Private Registry Dependencies