From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: IBus and different GTK versions
Date: Mon, 14 Sep 2015 10:06:16 +0200
Message-ID: <87zj0pv30n.fsf@gnu.org>
References: <87a8sqa7at.fsf@elephly.net> <87mvwq35c4.fsf@gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
Return-path: <guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org>
Received: from eggs.gnu.org ([2001:4830:134:3::10]:56700)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <ludo@gnu.org>) id 1ZbOmJ-0006Fo-Or
	for guix-devel@gnu.org; Mon, 14 Sep 2015 04:06:20 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <ludo@gnu.org>) id 1ZbOmI-00059y-Lf
	for guix-devel@gnu.org; Mon, 14 Sep 2015 04:06:19 -0400
In-Reply-To: <87mvwq35c4.fsf@gmail.com> (=?utf-8?B?IuWui+aWh+atpiIncw==?=
	message of "Sun, 13 Sep 2015 19:51:23 +0800")
List-Id: "Development of GNU Guix and the GNU System distribution."
	<guix-devel.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/guix-devel>,
	<mailto:guix-devel-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/archive/html/guix-devel>
List-Post: <mailto:guix-devel@gnu.org>
List-Help: <mailto:guix-devel-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/guix-devel>,
	<mailto:guix-devel-request@gnu.org?subject=subscribe>
Errors-To: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org
Sender: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org
To: =?utf-8?B?5a6L5paH5q2m?= <iyzsong@gmail.com>
Cc: guix-devel <guix-devel@gnu.org>

=E5=AE=8B=E6=96=87=E6=AD=A6 <iyzsong@gmail.com> skribis:

> Ricardo Wurmus <rekado@elephly.net> writes:
>
>> [...]
>>
>> It seems that GTK3 only looks for
>> =E2=80=98$libdir/gtk-3.0/3.0.0/immodules.cache=E2=80=99 and GTK2 only lo=
oks for
>> =E2=80=98$libdir/gtk-2.0/2.10.0/immodules.cache=E2=80=99 by default, whe=
re =E2=80=98$libdir=E2=80=99 is
>> =E2=80=98$out/lib=E2=80=99 of the GTK package.  (According to
>> https://developer.gnome.org/gtk3/stable/gtk-running.html)
>>
>> To make IBus work we need to find a way to make the different major
>> versions of GTK respect different =E2=80=98immodules.cache=E2=80=99 file=
s that are *not*
>> located in their =E2=80=98$libdir=E2=80=99.  In that case we could gener=
ate a fresh
>> =E2=80=98immodules.cache=E2=80=99 file for each major GTK version when b=
uilding a
>> profile.  Unfortunately, I haven=E2=80=99t been able to find any documen=
ted
>> means to achieve this.  It might require patching the GTKs to check an
>> additional path or environment variable.
>>
> We can set 'GTK_EXE_PREFIX' to the '~/.guix-profile', and generate the
> 'immodules.cache' files in a profile hook.  It will work for both gtk2
> and gtk3 applications.

What other things does =E2=80=98GTK_EXE_PREFIX=E2=80=99 affect?

The plan you suggest sounds good to me, my only concern is whether
=E2=80=98GTK_EXE_PREFIX=E2=80=99 is too broad for our purposes.

Thanks,
Ludo=E2=80=99.