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From: "Ludovic Courtès" <ludovic.courtes@inria.fr>
To: 43890@debbugs.gnu.org
Subject: bug#43890: ‘package-input-rewriting/spec’ can introduce unnecessary variants
Date: Fri, 09 Oct 2020 22:14:08 +0200	[thread overview]
Message-ID: <87v9fji2cv.fsf@inria.fr> (raw)

Consider this example:

--8<---------------cut here---------------start------------->8---
$ guix describe
Generacio 162	Oct 01 2020 00:23:38	(nuna)
  guix 7607ace
    repository URL: https://git.savannah.gnu.org/git/guix.git
    branch: master
    commit: 7607ace5091aea0157ba5c8a508129cc5fc4f931
$ guix build inkscape --no-grafts -d
/gnu/store/arjs5hb4wmy6dh5d3y8bbs808ki9abf8-inkscape-1.0.1.drv
$ guix build inkscape --no-grafts -d --with-graft=glib=glib-networking
/gnu/store/zd8mm3w6x9c97anfaly77fz28s5y3i5h-inkscape-1.0.1.drv
$ guix build inkscape --no-grafts -d --with-graft=libreoffice=abiword
/gnu/store/arjs5hb4wmy6dh5d3y8bbs808ki9abf8-inkscape-1.0.1.drv
--8<---------------cut here---------------end--------------->8---

The last one is fine: it has no effect.

The second one is problematic: since we’re using ‘--no-grafts’, the
‘--with-graft’ option should have absolutely no effect; yet, it yields a
different derivation.

On closer inspection, we see that the core issue is that
‘gobject-introspection’ in the second case ends up with ‘libffi’ twice
in its ‘*-guile-builder’ script, a problem similar to
<https://issues.guix.gnu.org/38100>.  (‘libffi’ is propagated by both
‘glib’ and ‘gobject-introspection’.)

Ludo’.




             reply	other threads:[~2020-10-09 20:24 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-09 20:14 Ludovic Courtès [this message]
2020-10-11 13:09 ` bug#43890: ‘package-input-rewriting/spec’ can introduce unnecessary variants Ludovic Courtès
2020-10-20 14:35 ` Ludovic Courtès

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