[Pkg-ime-devel] Bug#724226: Bug#724226: input-pad >= 1.0.2-1 breaks ibus-input-pad

[Pino Toscano]

Hi,

In data domenica 6 ottobre 2013 02:16:46, Osamu Aoki ha scritto:
> control: reassign 724226 libinput-pad-dev
> control: retitle  724226 libinput-pad-dev: Should depend on
> libgtk-3-dev (not libgtk2.0-dev)

I think this is not enough (and might be harmful), see below.

> On Sat, Oct 05, 2013 at 03:03:19PM +0200, Pino Toscano wrote:
> > the problem is due to input-pad 1.0.2-1 switching to gtk3 instead of
> 
> > gtk2:
> Yes, I switched input-pad to use gtk3.

... without taking into account what possible gtk version is used by 
users of libinput-pad.

> > this happens as input-pad is built against gtk3, while
> > ibus-input-pad is currently built against gtk2, and a clean buildd
> > chroot has no gtk3 installed.
> 
> I thought I can keep ibus-input-pad in gtk2 while input-pad as gtk3. 
> That is what I did.

So there is the ibus-setup-input-pad binary (built as part of
src:ibus-input-pad) which is directly linked to gtk2 (as specified by 
its build dependencies) and libinput-pad, which is linked to gtk3.

This poses two major issues:
1) gtk2 and gtk3 are not loadable in the same process, meaning
   ibus-setup-input-pad won't ever run (crash due to symbols conflict)
2) the build CFLAGS include both gtk2 (direct dependency) and gtk3
   (part of the libinput-pad CFLAGS), so there's a build clash

So...

> I think what is needed is:
>   * Change dependency of libinput-pad-dev to libgtk-3-dev

... this is indeed the wrong fix, if it is the only change you are 
planning to do right now. Again,

> > This means there are two possible solutions
> > a) switch also ibus-input-pad to gtk3 
> > b) switch back input-pad to gtk2 (and reassign this bug to it)

... because both input-pad and ibus-input-pad must use the *same* gtk 
version, be it gtk2 or gtk3, to avoid this clash.

-- 
Pino Toscano
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 190 bytes
Desc: This is a digitally signed message part.
URL: <http://lists.alioth.debian.org/pipermail/pkg-ime-devel/attachments/20131005/a1c6237e/attachment.sig>