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cfg_if::cfg_if! {
    if #[cfg(any(unix, target_os = "redox", target_os = "wasi"))] {
        mod unix;
        pub use self::unix::*;
    } else if #[cfg(windows)] {
        mod windows;
        pub use self::windows::*;
    } else {
        mod other;
        pub use self::other::*;
    }
}