[bug#70923] [PATCH v2 01/12] build-system: cargo: Accept unlabeled #:cargo-inputs.

[Herman Rimm via Guix-patches via <guix-patches@gnu.org>]

* guix/build-system/cargo.scm (crate-closure): Match unlabeled inputs.

Change-Id: Iae421281fa08d09ddd1e5d2da2864f0093d97cd1
---
 guix/build-system/cargo.scm | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/guix/build-system/cargo.scm b/guix/build-system/cargo.scm
index 658a2e525e..2e3061c0e8 100644
--- a/guix/build-system/cargo.scm
+++ b/guix/build-system/cargo.scm
@@ -6,6 +6,7 @@
 ;;; Copyright © 2019 Ivan Petkov <ivanppetkov@gmail.com>
 ;;; Copyright © 2020 Jakub Kądziołka <kuba@kadziolka.net>
 ;;; Copyright © 2021 Efraim Flashner <efraim@flashner.co.il>
+;;; Copyright © 2024 Herman Rimm <herman@rimm.ee>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -234,11 +235,14 @@ (define (seen? seen item)
        (if (null? propagated)
            (reverse result)
            (loop (reverse (concatenate propagated)) result '() #f seen)))
-      (((and input (label (? package? package))) rest ...)
+      ;; Match inputs with labels for backward compatibility.
+      (((or (_ (? package? package))
+            (? package? package))
+        rest ...)
        (if (and (not first?) (seen? seen package))
            (loop rest result propagated first? seen)
            (loop rest
-                 (cons input result)
+                 (cons package result)
                  (cons (package-cargo-inputs package)
                        propagated)
                  first?
@@ -296,8 +300,8 @@ (define (expand-crate-sources cargo-inputs cargo-development-inputs)
   something that can always be extended or reworked in the future)."
   (filter-map
     (match-lambda
-      ((label (? package? p))
-       (list label (package-source p)))
+      ((? package? p)
+       (list (package-name p) (package-source p)))
       ((label input)
        (list label input)))
     (crate-closure (append cargo-inputs cargo-development-inputs))))
-- 
2.45.2