From: "Ludovic Courtès" <ludo@gnu.org>
To: zimoun <zimon.toutoune@gmail.com>
Cc: guix-devel <guix-devel@gnu.org>,
Luis Felipe <luis.felipe.la@protonmail.com>,
44053@debbugs.gnu.org,
Maxim Cournoyer <maxim.cournoyer@gmail.com>
Subject: Re: bug#44053: ‘xdg-mime-database’ profile hook is slow
Date: Mon, 02 Nov 2020 13:53:18 +0100 [thread overview]
Message-ID: <87ft5rncn5.fsf@gnu.org> (raw)
In-Reply-To: <87sg9sm2qf.fsf@gnu.org> ("Ludovic Courtès"'s message of "Mon, 02 Nov 2020 12:12:40 +0100")
Ludovic Courtès <ludo@gnu.org> skribis:
> Apart from LibreOffice, I found that ‘share/mime/packages’ is provided
> by at least: hugin, gcr, fontforge. Most GUI packages don’t have it.
> So in practice, we’re often rebuilding the exact same database.
On closer inspection, the time-consuming bit is processing
‘share/mime/packages/freedesktop.org.xml’ (from ‘shared-mime-info’),
which is quite large and leads to the creation of hundreds of file. We
end up re-processing it every time. This is particularly wasteful
because the ‘shared-mime-info’ package already contains the result of
applying ‘update-mime-database’ to itself.
Unfortunately, AIUI,
update-mime-database(X ∪ Y) ≠ update-mime-database(X) ∪ update-mime-database(Y)
(For example, the files
‘share/mime/{globs,magic,XMLnamespaces,subclasses,aliases,types,generic-icons,icons,treemagic,mime.cache}’
concatenate info from X and Y.)
So it would seem we cannot simply used the pre-built database from
‘shared-mime-info’ and merge it with that of the other packages, at
least not without changing ‘update-mime-database’ or re-implementing
parts of it on our side.
Ludo’.
next prev parent reply other threads:[~2020-11-02 12:53 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-12 12:59 Removing/replacing “Guix in action” video from the home page? Ludovic Courtès
2020-10-12 14:31 ` Luis Felipe
2020-10-13 1:17 ` Joshua Branson
2020-10-13 17:19 ` Bonface M. K.
2020-10-13 20:59 ` Joshua Branson
2020-10-14 0:58 ` Bonface M. K.
2020-10-13 20:39 ` Ludovic Courtès
2020-10-14 0:14 ` Luis Felipe
2020-10-14 20:43 ` Joshua Branson
2020-10-16 10:27 ` Ludovic Courtès
2020-10-16 10:36 ` zimoun
2020-10-16 15:26 ` Luis Felipe
2020-10-18 3:42 ` Maxim Cournoyer
2020-10-18 11:13 ` zimoun
2020-10-18 20:55 ` Joshua Branson
2020-10-21 9:49 ` ‘xdg-mime-database’ profile hook is slow Ludovic Courtès
2020-10-21 10:23 ` zimoun
2020-10-27 23:14 ` Joshua Branson
2020-10-28 21:48 ` Luis Felipe
2020-10-28 22:38 ` zimoun
2020-10-29 12:35 ` Luis Felipe
[not found] ` <87sg9sm2qf.fsf@gnu.org>
2020-11-02 12:53 ` Ludovic Courtès [this message]
2020-11-02 14:04 ` bug#44053: " Ludovic Courtès
2020-11-03 23:32 ` zimoun
2020-11-05 14:47 ` Luis Felipe
2020-11-05 16:10 ` zimoun
2020-11-05 17:59 ` Luis Felipe
2020-11-06 12:55 ` zimoun
[not found] ` <87blga3l7e.fsf@gnu.org>
2020-11-06 13:57 ` Luis Felipe
2020-11-08 16:31 ` Ludovic Courtès
2020-11-06 9:12 ` Ludovic Courtès
2020-10-16 20:00 ` Removing/replacing “Guix in action” video from the home page? jbranso
2020-10-16 21:04 ` Luis Felipe
2020-10-28 0:55 ` Joshua Branson
2020-10-28 12:59 ` Tobias Geerinckx-Rice
2020-10-28 21:46 ` jbranso
2020-10-31 21:56 ` Ludovic Courtès
2020-11-01 0:50 ` jbranso
2020-11-03 22:30 ` zimoun
2020-10-16 19:57 ` jbranso
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