在 Rust 中有条件地导入

我有一个必须在Windows和Linux系统上运行的服务器应用程序. 这个问题始于我使用的mdns/zeroconf个模块.

我两个都用:

1. Linux的zeroconf(https://docs.rs/zeroconf/latest/zeroconf/)
2. Windows的astro_dnssd(https://github.com/astrohq/astro-dnssd)

Why I had to use 2 modules to do the same thing?个

我不得不使用两个模块来做基本上相同的事情，因为zeroconf支持Linux但不支持Windows，astro_dnssd使用bonjour-compatibility layer on top of Avahi for Linux which no longer supported，但astro_dnssd在Windows上运行得很好

My 100:

// asto_dnssd can be compiled on both Windows and Linux, but doesn't work as intended on Linux
use astro_dnssd::DNSServiceBuilder;

// this modules doesn't even compile on Windows
// so I had to manually disable this line and everything that uses zeroconf to run my server app on Windows, including the "Cargo.toml" file
use zeroconf::prelude::*;
use zeroconf::{MdnsService, ServiceRegistration, ServiceType, TxtRecord};

The problem:个

到目前为止，每当我在Windows上工作时，我都必须手动禁用zeroconf(通过注释该行)，当我在Linux上工作时，我必须再次启用它.这是一项繁琐的工作，从长远来看是不可持续的.是否可以使用env变量或env::consts::OS来检测并在Rust中进行"有条件导入"？例如:

let current_os = env::consts::OS;
match current_os {
        "windows" => {
            use astro_dnssd::DNSServiceBuilder;
            //... the rest of the code
        }
        "linux" => {
            use zeroconf::prelude::*;
            use zeroconf::{MdnsService, ServiceRegistration, ServiceType, TxtRecord};
            // ... the rest of the code
        }
        _ => {
            panic!("This operating system is not supported yet")
        }
    };