[bug#54439] Rust: Add Rust 1.59, set default to 1.59.

[Maxime Devos]

Paul Alesius schreef op vr 18-03-2022 om 01:21 [+0100]:
> +         ((#:tests? _ #f)
> +          #t)

This is incorrect when cross-compiling, use
(->bool (not (%current-target-system)) instead.

Or simpler:

(substitute-keyword-arguments
  (strip-keyword-arguments '(#:tests?) (package-arguments base-rust)))

Also, I'm wondering, should #:tests? #t be removed from 1.57?
From rust.scm:

       ;; Only the final Rust is tested, not the intermediate bootstrap
ones,
       ;; for performance and simplicity.
       #:tests? #f

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