stoq não abre no ubuntu 15.10

 stoq
Traceback (most recent call last):
  File "/usr/bin/stoq", line 99, in <module>
    sys.exit(main(sys.argv))
  File "/usr/lib/python2.7/dist-packages/stoq/main.py", line 83, in main
    args, shell = get_shell(args)
  File "/usr/lib/python2.7/dist-packages/stoq/main.py", line 77, in get_shell
    shell = boot_shell(options)
  File "/usr/lib/python2.7/dist-packages/stoq/gui/shell/bootstrap.py", line 458, in boot_shell
    bootstrap.bootstrap()
  File "/usr/lib/python2.7/dist-packages/stoq/gui/shell/bootstrap.py", line 71, in bootstrap
    self._check_dependencies()
  File "/usr/lib/python2.7/dist-packages/stoq/gui/shell/bootstrap.py", line 203, in _check_dependencies
    check_dependencies()
  File "/usr/lib/python2.7/dist-packages/stoq/lib/dependencies.py", line 477, in check_dependencies
    dp.check()
  File "/usr/lib/python2.7/dist-packages/stoq/lib/dependencies.py", line 105, in check
    self._check_weasyprint(WEASYPRINT_REQUIRED)
  File "/usr/lib/python2.7/dist-packages/stoq/lib/dependencies.py", line 419, in _check_weasyprint
    import weasyprint
  File "/usr/lib/python2.7/dist-packages/weasyprint/__init__.py", line 312, in <module>
    from .css import PARSER, preprocess_stylesheet
  File "/usr/lib/python2.7/dist-packages/weasyprint/css/__init__.py", line 30, in <module>
    from . import computed_values
  File "/usr/lib/python2.7/dist-packages/weasyprint/css/computed_values.py", line 18, in <module>
    from .. import text
  File "/usr/lib/python2.7/dist-packages/weasyprint/text.py", line 18, in <module>
    import cairocffi as cairo
  File "/usr/lib/python2.7/dist-packages/cairocffi/__init__.py", line 19, in <module>
    from ._ffi import ffi
  File "/usr/lib/python2.7/dist-packages/cairocffi/_ffi.py", line 3, in <module>
    from xcffib._ffi import ffi as _ffi0
  File "/usr/lib/python2.7/dist-packages/xcffib/__init__.py", line 28, in <module>
    lib = ffi.dlopen('libxcb.so')
OSError: cannot load library 'libxcb.so': libxcb.so: Não é possivel abrir arquivo de objetos compartilhado: Arquivo ou diretório não encontrado