pull: Add '--news'.

Suggested by Tobias Geerinckx-Rice <me@tobias.gr>.

* guix/scripts/pull.scm (%options, show-help): Add '--news'.
(display-profile-news): Add #:current-is-newer? and #:concise?.
Honor them.
(build-and-install): Pass #:concise? #t.
(display-new/upgraded-packages)[concise/max-item-count]: New variable.
Add call to 'display-hint'.
(process-query): Add clause for 'display-news'.
* doc/guix.texi (Invoking guix pull): Add '--news'.

1 files changed, 8 insertions, 0 deletions

diff --git a/doc/guix.texi b/doc/guix.texi
index 8c7522f286..785329add8 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -3663,6 +3663,14 @@ Read the list of channels from @var{file} instead of
 evaluates to a list of channel objects.  @xref{Channels}, for more
 information.
 
+@item --news
+@itemx -N
+Display the list of packages added or upgraded since the previous generation.
+
+This is the same information as displayed upon @command{guix pull} completion,
+but without ellipses; it is also similar to the output of @command{guix pull
+-l} for the last generation (see below).
+
 @item --list-generations[=@var{pattern}]
 @itemx -l [@var{pattern}]
 List all the generations of @file{~/.config/guix/current} or, if @var{pattern}