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02/04: upstream: Allow downgrades.


From: guix-commits
Subject: 02/04: upstream: Allow downgrades.
Date: Tue, 3 Jan 2023 06:31:36 -0500 (EST)

civodul pushed a commit to branch master
in repository guix.

commit a330bfdf5b2f27c34b5ece82bb355553af110cfe
Author: Ludovic Court├Ęs <ludo@gnu.org>
AuthorDate: Tue Dec 27 22:53:10 2022 +0100

    upstream: Allow downgrades.
    
    Previously, 'guix refresh -u guile=3.0.0' would do nothing.  With this
    change, it actually downgrades 'guile'.
    
    This is a followup to 8aeccc6240ec45f0bc7bed655e0c8149ae4253eb.
    
    * guix/upstream.scm (package-update): Ignore 'version>?' check
    when #:version is passed.  Warn about downgrades.
---
 guix/upstream.scm | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/guix/upstream.scm b/guix/upstream.scm
index f3ab9ab78b..4c72388bf3 100644
--- a/guix/upstream.scm
+++ b/guix/upstream.scm
@@ -501,11 +501,22 @@ SOURCE, an <upstream-source>."
 changes for PACKAGE; return #f (three values) when PACKAGE is up-to-date;
 raise an error when the updater could not determine available releases.
 KEY-DOWNLOAD specifies a download policy for missing OpenPGP keys; allowed
-values: 'always', 'never', and 'interactive' (default)."
+values: 'always', 'never', and 'interactive' (default).
+
+When VERSION is specified, update PACKAGE to that version, even if that is a
+downgrade."
   (match (package-latest-release package updaters #:version version)
     ((? upstream-source? source)
-     (if (version>? (upstream-source-version source)
-                    (package-version package))
+     (if (or (version>? (upstream-source-version source)
+                        (package-version package))
+             (and version
+                  (begin
+                    (warning (package-location package)
+                             (G_ "downgrading '~a' from ~a to ~a~%")
+                             (package-name package)
+                             (package-version package)
+                             (upstream-source-version source))
+                    #t)))
          (let ((method (match (package-source package)
                          ((? origin? origin)
                           (origin-method origin))



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