[bug#66421] [PATCH] guix: import: Don't import yanked rust crates.

[Maxim Cournoyer <maxim.cournoyer@gmail.com>]

Hi Efraim,

Efraim Flashner <efraim@flashner.co.il> writes:

> * guix/import/crate.scm (<crate-version>): Add yanked? field.
> (crate->guix-package)[find-crate-version]: Remove versions which have
> been yanked.
> * tests/crate.scm: Adjust tests for new yanked? field.
> ---
>
> Before this patch `guix import core-foundation-sys` would give 0.8.4
> (the listed max version), `guix import core-foundation-sys@0.8` would
> give 0.8.5 (which was yanked but was higher than 0.8.4). Similarly,
> before `guix import core-foundation-sys@0.7` gave 0.7.2 and after 0.7.0.
>
>  guix/import/crate.scm |  7 ++++++-
>  tests/crate.scm       | 40 +++++++++++++++++++++++++++-------------
>  2 files changed, 33 insertions(+), 14 deletions(-)
>
> diff --git a/guix/import/crate.scm b/guix/import/crate.scm
> index 6e10ebb5d4..a7eafb023e 100644
> --- a/guix/import/crate.scm
> +++ b/guix/import/crate.scm
> @@ -5,6 +5,7 @@
>  ;;; Copyright © 2021 Nicolas Goaziou <mail@nicolasgoaziou.fr>
>  ;;; Copyright © 2022 Hartmut Goebel <h.goebel@crazy-compilers.com>
>  ;;; Copyright © 2023 Simon Tournier <zimon.toutoune@gmail.com>
> +;;; Copyright © 2023 Efraim Flashner <efraim@flashner.co.il>
>  ;;;
>  ;;; This file is part of GNU Guix.
>  ;;;
> @@ -82,6 +83,7 @@ (define-json-mapping <crate-version> make-crate-version crate-version?
>                   (match-lambda
>                     ('null #f)
>                     ((? string? str) str)))
> +  (yanked?       crate-version-yanked? "yanked")  ;boolean
>    (links         crate-version-links))            ;alist
>  
>  ;; Crate dependency.  Each dependency (each edge in the graph) is annotated as
> @@ -256,12 +258,15 @@ (define* (crate->guix-package crate-name #:key version include-dev-deps?
>             (semver->string (last versions)))))
>  
>    ;; find the highest version of a crate that fulfills the semver <range>
> +  ;; and hasn't been yanked

While touching this comment, it'd be nice to turn add punctuation
(capitalize the first letter and add a period).

>    (define (find-crate-version crate range)
>      (let* ((semver-range (string->semver-range range))
>             (versions
>              (sort
>               (filter (lambda (entry)
> -                       (semver-range-contains? semver-range (first entry)))
> +                       (and
> +                         (not (crate-version-yanked? (second entry)))
> +                         (semver-range-contains? semver-range (first entry))))
>                       (map (lambda (ver)
>                              (list (string->semver (crate-version-number ver))
>                                    ver))

LGTM.  Related, but not in scope, could be to rewrite the above using a
match-lambda instead of accessing the entry items via first second.

-- 
Thanks,
Maxim