From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: gnome-tweak-tool tweaks
Date: Fri, 10 Jun 2016 14:24:27 +0200
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In-Reply-To: <87wpm23l2w.fsf@gnu.org> (Jan Nieuwenhuizen's message of "Mon, 06
	Jun 2016 08:09:11 +0200")
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To: Jan Nieuwenhuizen <janneke@gnu.org>, iyzsong@member.fsf.org
Cc: guix-devel@gnu.org

Hello!

Jan Nieuwenhuizen <janneke@gnu.org> skribis:

> When starting gnome-tweak-tool, it prints a warning
>
>     GLib-GIO-Message: Using the 'memory' GSettings backend.  Your setting=
s will not be saved or shared with other applications.
>
> The patch below has gnome-tweak-tool communicate with gsettings instead
> of using the `memory.  I'm not sending it as a fix yet because=20
> gnome-tweak-tool does not list any themes, as davexunit reported.

So does the patch fix something?  (Sorry, I=E2=80=99m quite ignorant about
GNOMEy things.)

> I/O error : Permission denied
> I/O error : Permission denied
> Failed to write XML file; For permission problems, try rerunning as root

I found that string comes from =E2=80=98shared-mime-info=E2=80=99, which is=
 itself used
by the =E2=80=98xdg-mime-database=E2=80=99 hook in (guix profiles) (a hook =
that runs
when the profile is created to update the MIME database):

--8<---------------cut here---------------start------------->8---
static gboolean save_xml_file(xmlDocPtr doc, const gchar *filename, GError =
**error)
{
#if LIBXML_VERSION > 20400
	if (xmlSaveFormatFileEnc(filename, doc, "utf-8", 1) < 0)
	{
		g_set_error(error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
			    "Failed to write XML file; For permission problems, try rerunning as=
 root");
		return FALSE;
	}
#else
--8<---------------cut here---------------end--------------->8---

=E5=AE=8B=E6=96=87=E6=AD=A6: any idea what the problem might be?  Perhaps
=E2=80=98update-mime-database=E2=80=99 is trying to write to /gnu/store/=E2=
=80=A6-something?

Also, it=E2=80=99s a problem that =E2=80=98update-mime-database=E2=80=99 re=
turns 0 here, as
seems to be the case.

Thanks,
Ludo=E2=80=99.