03/09: git-download: Honor the ‘GUIX_DOWNLOAD_FALLBACK_TEST’ environment variable.

[guix-commits]

civodul pushed a commit to branch master
in repository guix.

commit c7ed1e01600a5b37599ab50a30b2c41da646b1f4
Author: Ludovic Courtès <ludo@gnu.org>
AuthorDate: Mon Sep 11 11:33:41 2023 +0200

    git-download: Honor the ‘GUIX_DOWNLOAD_FALLBACK_TEST’ environment variable.
    
    * guix/git-download.scm (git-fetch): Honor ‘%download-fallback-test’.
---
 guix/git-download.scm | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/guix/git-download.scm b/guix/git-download.scm
index 8989b1b463..f1f19397c6 100644
--- a/guix/git-download.scm
+++ b/guix/git-download.scm
@@ -28,6 +28,7 @@
   #:use-module (guix packages)
   #:use-module (guix modules)
   #:autoload   (guix build-system gnu) (standard-packages)
+  #:autoload   (guix download) (%download-fallback-test)
   #:autoload   (git bindings)   (libgit2-init!)
   #:autoload   (git repository) (repository-open
                                  repository-close!
@@ -161,7 +162,11 @@ HASH-ALGO (a symbol).  Use NAME as the file name, or a 
generic name if #f."
                       ;; downloads.
                       #:script-name "git-download"
                       #:env-vars
-                      `(("git url" . ,(git-reference-url ref))
+                      `(("git url" . ,(match (%download-fallback-test)
+                                        ('content-addressed-mirrors
+                                         "https://example.org/does-not-exist";)
+                                        (_
+                                         (git-reference-url ref))))
                         ("git commit" . ,(git-reference-commit ref))
                         ("git recursive?" . ,(object->string
                                               (git-reference-recursive? ref))))