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-rw-r--r--guix/upstream.scm12
-rw-r--r--tests/upstream.scm21
2 files changed, 32 insertions, 1 deletions
diff --git a/guix/upstream.scm b/guix/upstream.scm
index a6659c3b14..19c5efc21b 100644
--- a/guix/upstream.scm
+++ b/guix/upstream.scm
@@ -76,6 +76,7 @@
url-predicate
url-prefix-predicate
coalesce-sources
+ preferred-upstream-source
upstream-updater
upstream-updater?
@@ -445,6 +446,17 @@ is no signature. Return #f and #f when this is not applicable."
(or (upstream-source-signature-urls source)
(circular-list #f)))))
+(define (preferred-upstream-source source package)
+ "Return a variant of SOURCE that uses the same archive type as PACKAGE's
+source (gz, xz, zst, etc.). Return SOURCE if this is not applicable."
+ (let ((url signature-url (preferred-upstream-source-url source package)))
+ (if url
+ (upstream-source
+ (inherit source)
+ (urls (list url))
+ (signature-urls (and=> signature-url list)))
+ source)))
+
(define* (package-update/url-fetch store package source
#:key key-download key-server)
"Return the version, tarball, and SOURCE, to update PACKAGE to
diff --git a/tests/upstream.scm b/tests/upstream.scm
index a94bb66068..c75ab091e5 100644
--- a/tests/upstream.scm
+++ b/tests/upstream.scm
@@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2016, 2023 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2016, 2023-2024 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2022 Ricardo Wurmus <rekado@elephly.net>
;;;
;;; This file is part of GNU Guix.
@@ -26,6 +26,7 @@
#:use-module ((guix licenses) #:prefix license:)
#:use-module (guix upstream)
#:use-module (guix tests)
+ #:use-module (srfi srfi-26)
#:use-module (srfi srfi-64)
#:use-module (ice-9 match))
@@ -55,4 +56,22 @@
(signature-urls
'("ftp://example.org/foo-1.tar.xz.sig")))))))
+(test-equal "preferred-upstream-source"
+ '(("http://example.org/foo-2.0.tar.xz")
+ ("http://example.org/foo-2.0.tar.xz.sig"))
+ (let* ((package (dummy-package
+ "foo"
+ (version "1.0")
+ (source
+ (dummy-origin (uri "http://example.org/foo-1.0.tar.xz")))))
+ (source (upstream-source
+ (package "foo")
+ (version "2.0")
+ (urls '("http://example.org/foo-2.0.tar.gz"
+ "http://example.org/foo-2.0.tar.xz"))
+ (signature-urls (map (cut string-append <> ".sig") urls))))
+ (preferred (preferred-upstream-source source package)))
+ (list (upstream-source-urls preferred)
+ (upstream-source-signature-urls preferred))))
+
(test-end)