usestd::env;// Configuration defaults.
fnmain(){// Export defaults as compile time environment variables.
// These variables are to be set by package managers in their build script.
// `export SOZU_CONFIG=<default configuration file> && cargo build`.
ifletOk(config)=env::var("SOZU_CONFIG"){println!("cargo:rustc-env={}={}","SOZU_CONFIG", config);}}