导入gi时出错

这是我尝试运行的命令及其输出：

$ python2
Python 2.7.8 (default, Sep 24 2014, 18:26:21) 
[GCC 4.9.1 20140903 (prerelease)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import gi
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.7/site-packages/gi/__init__.py", line 42, in <module>
    from . import _gi
ImportError: /usr/lib/python2.7/site-packages/gi/_gi.so: undefined symbol: g_type_check_instance_is_fundamentally_a

我已经搜索了此错误，但找不到任何有帮助的内容。

这些是我已经安装的软件包：

$ pacman -Qs python
local/pygtk 2.24.0-3
    Python bindings for the GTK widget set
local/python 3.3.4-1
    Next generation of the python high-level scripting language
local/python-dbus-common 1.2.0-2
    Common dbus-python files shared between python-dbus and python2-dbus
local/python-gobject 3.14.0-2
    Python 3 bindings for GObject
local/python-gobject2 2.28.6-11
    Python 3 bindings for GObject2
local/python2 2.7.8-2
    A high-level scripting language
local/python2-cairo 1.10.0-1
    Python2 bindings for the cairo graphics library
local/python2-dbus 1.2.0-2
    Python 2.7 bindings for DBUS
local/python2-distutils-extra 2.38-1
    Enhancements to the Python build system
local/python2-gobject 3.14.0-2
    Python 2 bindings for GObject
local/python2-gobject2 2.28.6-11
    Python 2 bindings for GObject2
local/python2-pillow 2.3.0-3
    Python Imaging Library (PIL) fork. Python2 version.
local/python2-xdg 0.25-1
    Python library to access freedesktop.org standards

不知道我在这里想念的..

解决了：

错误是由于旧版本的glib2软件包引起的。