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use std::fmt; #[derive(PartialEq, PartialOrd, Eq, Ord, Debug)] pub enum Sys { LINUX, NONE, } impl fmt::Display for Sys { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { let sys_str = match self { Self::LINUX => "linux", Self::NONE => "none", }; write!(f, "{}", sys_str) } }