GNU bug report logs - #72259
guix system: "guix graph -t referrers" could be more helpful in some cases

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From: "Zack Weinberg" <zack <at> owlfolio.org>
To: 72259 <at> debbugs.gnu.org
Subject: bug#72259: guix system: "guix graph -t referrers" could be more helpful in some cases
Date: Tue, 23 Jul 2024 13:24:01 -0400

On a Guix System installation, "guix graph -t referrers" is not
helpful when the package you're investigating is brought in directly
by the operating-system declaration.  Here are two examples.

1) Packages that have been added to the 'packages' property of the
operating-system declaration, but have no connection to any other
package, are described as unconnected.

(operating-system
  (packages (cons* (specification->package "lsof") %base-packages))
  ;; etc
)

# guix graph -t referrers lsof
digraph "Guix referrers" {
  "/gnu/store/7fkgda85xj4dr2d0r8lafyvnx5b9xwzp-lsof-4.94.0"
    [label = "lsof-4.94.0", shape = box, fontname = sans];
}

2) If you've excluded a %base-packages package that ships setuid
binaries (e.g. "sudo", but forgotten to exclude the actual setuid
binaries as well, the package will still be included in the
operating-system derivation, and guix graph won't tell you why:

(operating-system
  (packages
    (filter
      (lambda (pkg) (not (string= (package-name pkg) "sudo")))
      %base-packages))
  ;; etc
)

# guix graph -t referrers sudo
digraph "Guix referrers" {
  "/gnu/store/gnybfg31is632dyaivd907f2h0wff80d-sudo-1.9.14p3"
    [label = "sudo-1.9.14p3", shape = box, fontname = sans];
  "/gnu/store/gnybfg31is632dyaivd907f2h0wff80d-sudo-1.9.14p3" ->
  "/gnu/store/gnybfg31is632dyaivd907f2h0wff80d-sudo-1.9.14p3"
    [color = darkviolet];
}

This is saying that sudo refers to _itself_ and nothing else does,
which doesn't make any sense.

In both cases I would have expected "guix graph -t referrers"
to report that the package was a direct dependency of the
operating-system derivation itself; in the latter case I would
have liked it if there was some indication that the dependency
was because of 'setuid-binaries'.

zw

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