>=dev-lang/python-2.7.3-r2:2.7 >=dev-lang/python-exec-2:2/2=[python_targets_python2_7(-),-python_single_target_python2_7(-),-python_single_target_python3_3(-),-python_single_target_python3_4(-)] dev-lang/swig sys-devel/flex sys-devel/bison
