From b43841c124d15eaecc41b3928f08a26dbd5c653a Mon Sep 17 00:00:00 2001
From: Ricardo Wurmus <rekado@elephly.net>
Date: Mon, 10 Jul 2023 20:37:55 +0200
Subject: [PATCH] refresh: Sort update specs by package location.

Fixes <https://issues.guix.gnu.org/64358>.

* guix/scripts/refresh.scm (guix-refresh): Sort update specs by location from
bottom to top before updating packages.
---
 guix/scripts/refresh.scm | 33 ++++++++++++++++++++++-----------
 1 file changed, 22 insertions(+), 11 deletions(-)

diff --git a/guix/scripts/refresh.scm b/guix/scripts/refresh.scm
index 9676271542..f5cb18af22 100644
--- a/guix/scripts/refresh.scm
+++ b/guix/scripts/refresh.scm
@@ -6,7 +6,7 @@
 ;;; Copyright © 2016 Ben Woodcroft <donttrustben@gmail.com>
 ;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
 ;;; Copyright © 2018 Efraim Flashner <efraim@flashner.co.il>
-;;; Copyright © 2019 Ricardo Wurmus <rekado@elephly.net>
+;;; Copyright © 2019, 2023 Ricardo Wurmus <rekado@elephly.net>
 ;;; Copyright © 2020 Simon Tournier <zimon.toutoune@gmail.com>
 ;;; Copyright © 2021 Sarah Morgensen <iskarian@mgsn.dev>
 ;;; Copyright © 2022 Hartmut Goebel <h.goebel@crazy-compilers.com>
@@ -589,16 +589,27 @@ (define (options->updaters opts)
                               (or (assoc-ref opts 'keyring)
                                   (string-append (config-directory)
                                                  "/upstream/trustedkeys.kbx"))))
-                (for-each
-                 (lambda (update)
-                   (update-package store
-                                   (update-spec-package update)
-                                   (update-spec-version update)
-                                   updaters
-                                   #:key-server (%openpgp-key-server)
-                                   #:key-download key-download
-                                   #:warn? warn?))
-                 update-specs)
+                (let* ((spec-line
+                        (compose location->string
+                                 package-location
+                                 update-spec-package))
+                       ;; Sort the specs so that we update packages from the
+                       ;; bottom of the file to the top.  This way we can be
+                       ;; sure that the package locations are always correct
+                       ;; and never shifted due to previous edits.
+                       (sorted-update-specs
+                        (sort update-specs
+                              (lambda (a b) (string> (spec-line a) (spec-line b))))))
+                  (for-each
+                   (lambda (update)
+                     (update-package store
+                                     (update-spec-package update)
+                                     (update-spec-version update)
+                                     updaters
+                                     #:key-server (%openpgp-key-server)
+                                     #:key-download key-download
+                                     #:warn? warn?))
+                   sorted-update-specs))
                 (return #t)))
              (else
               (for-each (cut check-for-package-update <> updaters