Specifying rust version

[phodina]

Hi,

the documentation for 'cargo-build-system' [1] refers to parameter '#:rust' 
which allows user to specify the Rust compiler version.

However, I've found this commit 9635119a61a9ab1b023558727fcdf1816fdc7fc6 from 
Maxim which makes all 'rust-.*' definitions private.

Is there a way to specify newer Rust compiler? Something like 'rust-next'?

The package requires version 1.62 but the current is 1.60. Also both version 
are already defined. What's missing is just way to select them.

[1] https://guix.gnu.org/manual/en/html_node/Build-Systems.html

EDIT: Add help-guix@gnu.org to list of recipients.
----
Petr

------- Forwarded Message -------
From: phodina <phodina@protonmail.com>
Date: On Monday, December 26th, 2022 at 9:39 AM
Subject: Specifying rust version
To: Maxim Cournoyer <maxim.cournoyer@gmail.com>, Efraim Flashner 
<efraim@flashner.co.il>

> Hi,
>
> the documentation for 'cargo-build-system' [1] refers to parameter '#:rust' 
> which allows user to specify the Rust compiler version.
>
> However, I've found this commit 9635119a61a9ab1b023558727fcdf1816fdc7fc6 from 
> Maxim which makes all 'rust-.*' definitions private.
>
> Is there a way to specify newer Rust compiler? Something like 'rust-next'?
>
> The package requires version 1.62 but the current is 1.60. Also both version 
> are already defined. What's missing is just way to select them.
>
> [1] https://guix.gnu.org/manual/en/html_node/Build-Systems.html
>
> ----
> Petr