Re: IBus and different GTK versions

[宋文武 <iyzsong@gmail.com>]

2015-09-14 16:28 GMT+08:00, Ricardo Wurmus <rekado@elephly.net>:
>
> 宋文武 <iyzsong@gmail.com> writes:
>
>> Ricardo Wurmus <rekado@elephly.net> writes:
>>
>>> [...]
>>>
>>> It seems that GTK3 only looks for
>>> ‘$libdir/gtk-3.0/3.0.0/immodules.cache’ and GTK2 only looks for
>>> ‘$libdir/gtk-2.0/2.10.0/immodules.cache’ by default, where ‘$libdir’ is
>>> ‘$out/lib’ 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 ‘immodules.cache’ files that are *not*
>>> located in their ‘$libdir’.  In that case we could generate a fresh
>>> ‘immodules.cache’ file for each major GTK version when building a
>>> profile.  Unfortunately, I haven’t been able to find any documented
>>> means to achieve this.  It might require patching the GTKs to check an
>>> additional path or environment variable.
>>>
>> We can set 'GTK_EXE_PREFIX' to the '~/.guix-profile', and generate the
>> 'immodules.cache' files in a profile hook.  It will work for both gtk2
>> and gtk3 applications.
>
> Does this mean that GTK needs to be installed in the user’s profile for
> this to work?  I thought ‘GTK_EXE_PREFIX’ would change the path of
> ‘$libdir’ for *all* of GTK’s libraries.  It can only have one value, not
> a list of paths to look for libraries.
Yes, this require install GTK+ into user's profile.
Also, there is a 'GTK_DATA_PREFIX' in a same situation, which I think is
the only way to set the GTK+ 2 theme.