* guix/scripts/pull.scm (display-profile-news): Return true when there's
more to display.
(display-news-entry-title): New procedure.
(display-news-entry): Use it.
(display-channel-specific-news): Return true when there's more to
display.
(display-channel-news-headlines): New procedure.
(build-and-install): Call it. When 'display-channel-news-headlines' or
'display-profile-news' returns #t, print a hint to run "pull --news".
(display-new/upgraded-packages): Return true when there's more to display.
* guix/scripts/pull.scm (display-news-entry)
(display-channel-specific-news): New procedures.
(display-channel-news): Call it.
(display-new/upgraded-packages): Adjust hint message.
* doc/guix.texi (Invoking guix pull): Mention it.
Suggested by Ricardo Wurmus <rekado@elephly.net>.
* guix/channels.scm (<channel-news-entry>)[tag]: New field.
(sexp->channel-news-entry): Accept either 'commit' or 'tag' in 'entry'
forms.
(resolve-channel-news-entry-tag): New procedure.
(channel-news-for-commit): Move 'with-repository' form one level
higher. Call 'resolve-channel-news-entry-tag' on all the news entries.
* guix/tests/git.scm (populate-git-repository): Add clause for 'tag'.
* tests/channels.scm ("channel-news, one entry"): Create a tag and add
an entry with a tag. Check that the tag is resolved and also visible in
the <channel-news-entry> record.
* doc/guix.texi (Channels): Mention tags in news entries.
* guix/channels.scm (<channel-metadata>)[news-file]: New field.
(read-channel-metadata): Set the 'news-file' field.
(read-channel-metadata-from-source): Likewise.
(<channel-news>, <channel-news-entry>): New record types.
(sexp->channel-news-entry, read-channel-news)
(channel-news-for-commit): New procedures.
* guix/tests/git.scm (populate-git-repository): For 'add', allow
CONTENTS to be a procedure.
* tests/channels.scm ("channel-news, no news")
("channel-news, one entry"): New tests.
* doc/guix.texi (Channels): Document it.
As defaulting by stderr, along with the shepherd service not directing the
output to a log file makes seeing the output difficult, compared to logging to
syslog.
* gnu/services/virtualization.scm (libvirt-configuration)[log-outputs]: Change
default from "3:stderr" to "3:syslog:libvirtd".
Otherwise the .go files appear within share, and Guile doesn't find them. With
this patch they appear in lib within the output. One thing this means is that
stack traces include the filenames.
* gnu/packages/guile-xyz.scm (guile-email)[arguments]: Add 'patch-module-dir
phase.
* guix/scripts/show.scm: New file.
* Makefile.am (MODULES): Add it.
* po/guix/POTFILES.in: Add it.
* tests/guix-package-aliases.sh: Add test.
* doc/guix.texi (Invoking guix package): Document it and use it in a example.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
Ludovic Courtès