Hi,

Christopher Baines <mail@cbaines.net> skribis:

> To ensure that it just returns a single package record for some given
> arguments, as this helps to avoid poor performance of the store connection
> object cache.
>
> * gnu/packages/rust.scm (make-rust-sysroot): Move code to
> make-rust-sysroot/implementation.
> (make-rust-sysroot/implementation): New variable.
>
> Change-Id: Ibb30c7398328c87c032bb8828635a34ada935167

[...]

>  (define*-public (make-rust-sysroot target)
> -  (let ((base-rust rust))
> +  (make-rust-sysroot/implementation target rust))
> +
> +(define make-rust-sysroot/implementation
> +  (mlambda (target base-rust)
>      (package
>        (inherit base-rust)
>        (name (string-append "rust-sysroot-for-" target))

We should avoid using ‘mlambda’ (without ‘q’) with packages as it leads
to deep object comparisons.  That’s why for packages we typically
always have one-argument (mlambdaq (package) …).

But since ‘base-rust’ wasn’t a parameter before, let’s keep it simple
(‘diff --ignore-space-change’):