Build-time integration for connectrpc.

Use this crate in build.rs to compile .proto files into Rust code at build time. It shells out to protoc (or buf, or reads a precompiled FileDescriptorSet) to obtain descriptors, then runs [connectrpc_codegen] to emit buffa message types plus ConnectRPC service traits and clients into $OUT_DIR.

Example

// build.rs
fn main() {
    connectrpc_build::Config::new()
        .files(&["proto/my_service.proto"])
        .includes(&["proto/"])
        .include_file("_connectrpc.rs")
        .compile()
        .unwrap();
}

// lib.rs
include!(concat!(env!("OUT_DIR"), "/_connectrpc.rs"));

Requirements

Requires protoc on PATH (or set via PROTOC). To use buf instead, call [Config::use_buf]. To avoid both, precompile a FileDescriptorSet once and ship it alongside your source via [Config::descriptor_set].