From: zimoun <zimon.toutoune@gmail.com>
To: Lars-Dominik Braun <ldb@leibniz-psychology.org>, 44254@debbugs.gnu.org
Subject: bug#44254: Performance of package input rewriting
Date: Tue, 27 Oct 2020 15:14:22 +0100 [thread overview]
Message-ID: <86361z4uyp.fsf@gmail.com> (raw)
In-Reply-To: <20201027132614.GB3081@zpidnp36>
Hi Lars,
On Tue, 27 Oct 2020 at 14:26, Lars-Dominik Braun <ldb@leibniz-psychology.org> wrote:
> Previously I have been doing this using package-input-rewriting, but starting
> an environment containing python-jupyterlab alone took about 20s (warm caches,
> all derivations in the store). Manually rewriting inputs by inheriting and
> alist-delete’ing brings this down to 3s, which is pretty significant.
> --no-grafts has not much of an impact (15s vs 2s) here. See
> https://github.com/guix-science/guix-science/commit/972795a23cc9eb5a0bb1a2ffb5681d151fc4d4b0
> for the exact changes.
Is it not related to “#:deep? #t“ by default? The default was #f.
Well, using ’inherit’ only rewrites the direct explicit dependencies.
However, ’package-input-rewriting’ traverse all the graph of
dependencies and replaces accordingly. Maybe I misunderstand.
All the best,
simon
next prev parent reply other threads:[~2020-10-27 14:37 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-27 13:26 bug#44254: Performance of package input rewriting Lars-Dominik Braun
2020-10-27 14:14 ` zimoun [this message]
2020-10-28 14:19 ` Ludovic Courtès
2020-10-27 19:58 ` Ricardo Wurmus
2020-10-30 8:42 ` Lars-Dominik Braun
2020-10-31 10:27 ` Ludovic Courtès
2020-11-03 8:23 ` Lars-Dominik Braun
2020-11-03 9:32 ` Ludovic Courtès
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