#[cmp(ignore)] attribute for deriving `*Eq`, `*Ord`, `Hash`

language design
12

That specific case isn't using StructuralEq, it's a tuple-struct pattern so it will definitely not match. For StructuralEq you would need to test:

const THINGY: Thingy = Thingy(999999999, 2);
match thingy {
    // Should the following match succeed?
    THINGY => println!("matches!"),
    _ => println!("doesn't match"),
}

(And introducing inconsistencies between struct patterns and const path patterns is another problem).

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