upstream: 'package-update' returns the <upstream-source> object.

Fixes a regression introduced in
abd4d6b33dba4de228e90ad15a8efb456fcf7b6e, where CHANGES would no longer
be a thunk.

Reported by Ricardo Wurmus.

* guix/upstream.scm (package-update/url-fetch): Return SOURCE as the
third value instead of CHANGES.
* guix/scripts/refresh.scm (update-package): Adjust accordingly.

2 files changed, 5 insertions, 5 deletions

diff --git a/guix/scripts/refresh.scm b/guix/scripts/refresh.scm
index 5b0f345cde..6d77e2642b 100644
--- a/guix/scripts/refresh.scm
+++ b/guix/scripts/refresh.scm
@@ -297,7 +297,7 @@ KEY-DOWNLOAD specifies a download policy for missing OpenPGP keys; allowed
 values: 'interactive' (default), 'always', and 'never'.  When WARN? is true,
 warn about packages that have no matching updater."
   (if (lookup-updater package updaters)
-      (let-values (((version tarball changes)
+      (let-values (((version tarball source)
                     (package-update store package updaters
                                     #:key-download key-download))
                    ((loc)
@@ -330,7 +330,7 @@ warn about packages that have no matching updater."
                               (G_ "~a: consider removing this propagated input: ~a~%")))
                            (package-name package)
                            (upstream-input-change-name change)))
-                 (changes))
+                 (upstream-source-input-changes source))
                 (let ((hash (call-with-input-file tarball
                               port-sha256)))
                   (update-package-source package version hash)))
diff --git a/guix/upstream.scm b/guix/upstream.scm
index 55683dd9b7..2c70b3422d 100644
--- a/guix/upstream.scm
+++ b/guix/upstream.scm
@@ -344,10 +344,10 @@ values: the item from LST1 and the item from LST2 that match PRED."
 
 (define* (package-update/url-fetch store package source
                                    #:key key-download)
-  "Return the version, tarball, and input changes needed to update PACKAGE to
+  "Return the version, tarball, and SOURCE, to update PACKAGE to
 SOURCE, an <upstream-source>."
   (match source
-    (($ <upstream-source> _ version urls signature-urls changes)
+    (($ <upstream-source> _ version urls signature-urls)
      (let*-values (((archive-type)
                     (match (and=> (package-source package) origin-uri)
                       ((? string? uri)
@@ -371,7 +371,7 @@ SOURCE, an <upstream-source>."
                            (or signature-urls (circular-list #f)))))
        (let ((tarball (download-tarball store url signature-url
                                         #:key-download key-download)))
-         (values version tarball changes))))))
+         (values version tarball source))))))
 
 (define %method-updates
   ;; Mapping of origin methods to source update procedures.