That will be including transitive dependencies. Consider how many dependencies making a HTTP request will pull in. Ones for network IO, ones for parsing HTTP re

That will be including transitive dependencies. Consider how many dependencies making a HTTP request will pull in. Ones for network IO, ones for parsing HTTP request. Possibly separate ones for HTTP1, HTTP2, HTTP3. Ones for type definitions of HTTP requests. Rust convention is to publish these bits as separate crates even if they are published by the same maintainer(s) so as to improve compile times (separate crates can be compiled in parallel) and modularity (if you're writing a competing library then you can share the internals of the existing implementation when possible). This isn't like C++ where a single dependency is a huge project. Some crates are literally just trait (interface) definitions.