pub fn is_derivation(&self) -> bool {
        if let Some(ext) = self.0.extension() {
            ext == "drv"
        } else {
            false
        }
    }
/// Determines whether the path points to a derivation.
Determines whether the path points to a derivation.
Determines whether the path points to a derivation .
pub fn is_derivation(&self) -> bool {
        if let Some(ext) = self.0.extension() {
            ext == "drv"
        } else {
            false
        }
    }
pub fn is_derivation ( & self ) -> bool { if let Some ( ext ) = self . 0 . extension ( ) { ext == " " } else { false } }
Determines whether the path points to a derivation.
Determines whether the path points to a derivation .
&self