From: Simon Tournier <zimon.toutoune@gmail.com>
To: Zack Weinberg <zack@owlfolio.org>, 72259@debbugs.gnu.org
Subject: bug#72259: guix system: "guix graph -t referrers" could be more helpful in some cases
Date: Wed, 24 Jul 2024 01:15:15 +0200 [thread overview]
Message-ID: <8734nzg0os.fsf@gmail.com> (raw)
In-Reply-To: <1044fab9-b70d-477f-a0c6-97757cba2c00@app.fastmail.com>
Hi,
On Tue, 23 Jul 2024 at 13:24, "Zack Weinberg" via Bug reports for GNU Guix <bug-guix@gnu.org> wrote:
> I would have expected "guix graph -t referrers"
> to report that the package was a direct dependency of the
> operating-system derivation itself
Hum, I do not think that “guix graph” operated on the level of
’operating-system’. That said, indeed something seems unexpected: you
get,
> # guix graph -t referrers lsof
> digraph "Guix referrers" {
> "/gnu/store/7fkgda85xj4dr2d0r8lafyvnx5b9xwzp-lsof-4.94.0"
> [label = "lsof-4.94.0", shape = box, fontname = sans];
> }
and the manual reads [1],
‘referrers’
This is the graph of the “referrers” of a store item, as returned
by ‘guix gc --referrers’ (*note Invoking guix gc::).
This relies exclusively on local information from your store. For
instance, let us suppose that the current Inkscape is available in
10 profiles on your machine; ‘guix graph -t referrers inkscape’
will show a graph rooted at Inkscape and with those 10 profiles
linked to it.
It can help determine what is preventing a store item from being
garbage collected.
--8<---------------cut here---------------start------------->8---
$ guix package -p /tmp/one-profile -I
lsof 4.94.0 out /gnu/store/6nyp9cvksvyfww5d7j7rvm43jb46p521-lsof-4.94.0
$ guix gc --referrers /gnu/store/6nyp9cvksvyfww5d7j7rvm43jb46p521-lsof-4.94.0
/gnu/store/5wmvmlba841wvy681840cjwjcdifcjq2-profile
$ guix graph -t referrers /gnu/store/6nyp9cvksvyfww5d7j7rvm43jb46p521-lsof-4.94.0
digraph "Guix referrers" {
"/gnu/store/6nyp9cvksvyfww5d7j7rvm43jb46p521-lsof-4.94.0" [label = "lsof-4.94.0", shape = box, fontname = sans];
"/gnu/store/6nyp9cvksvyfww5d7j7rvm43jb46p521-lsof-4.94.0" -> "/gnu/store/5wmvmlba841wvy681840cjwjcdifcjq2-profile" [color = red];
"/gnu/store/5wmvmlba841wvy681840cjwjcdifcjq2-profile" [label = "profile", shape = box, fontname = sans];
"/gnu/store/5wmvmlba841wvy681840cjwjcdifcjq2-profile" -> "/gnu/store/5wmvmlba841wvy681840cjwjcdifcjq2-profile" [color = darkgoldenrod];
}
--8<---------------cut here---------------end--------------->8---
So far, so good! However, indeed:
--8<---------------cut here---------------start------------->8---
$ guix graph -t referrers lsof
digraph "Guix referrers" {
"/gnu/store/7fkgda85xj4dr2d0r8lafyvnx5b9xwzp-lsof-4.94.0" [label = "lsof-4.94.0", shape = box, fontname = sans];
}
--8<---------------cut here---------------end--------------->8---
And the reason is because grafts.
--8<---------------cut here---------------start------------->8---
$ guix build lsof --no-grafts
/gnu/store/7fkgda85xj4dr2d0r8lafyvnx5b9xwzp-lsof-4.94.0
$ guix package -p /tmp/another-profile -i lsof --no-grafts
$ guix graph -t referrers lsof
digraph "Guix referrers" {
"/gnu/store/7fkgda85xj4dr2d0r8lafyvnx5b9xwzp-lsof-4.94.0" [label = "lsof-4.94.0", shape = box, fontname = sans];
"/gnu/store/7fkgda85xj4dr2d0r8lafyvnx5b9xwzp-lsof-4.94.0" -> "/gnu/store/hjgbwa566fwzmwvrdal5ycxzlzz3al6x-profile" [color = blue];
"/gnu/store/hjgbwa566fwzmwvrdal5ycxzlzz3al6x-profile" [label = "profile", shape = box, fontname = sans];
"/gnu/store/hjgbwa566fwzmwvrdal5ycxzlzz3al6x-profile" -> "/gnu/store/hjgbwa566fwzmwvrdal5ycxzlzz3al6x-profile" [color = darkgoldenrod];
}
--8<---------------cut here---------------end--------------->8---
Well, the fix should be to have the grafted item by default pointing to
the non-grafted one and potentially referencing the others as describe
by the manual.
Cheers,
simon
1: https://guix.gnu.org/manual/devel/en/guix.html#Invoking-guix-graph
prev parent reply other threads:[~2024-07-24 6:55 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-23 17:24 bug#72259: guix system: "guix graph -t referrers" could be more helpful in some cases Zack Weinberg via Bug reports for GNU Guix
2024-07-23 23:15 ` Simon Tournier [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://guix.gnu.org/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=8734nzg0os.fsf@gmail.com \
--to=zimon.toutoune@gmail.com \
--cc=72259@debbugs.gnu.org \
--cc=zack@owlfolio.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.savannah.gnu.org/cgit/guix.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).