安装gentoo中mirrorselect错误

在安装gentoo中选择镜像列表时出现了如下错误

Traceback (most recent call last):
  File "/usr/lib/python2.7/site.py", line 554, in <module>
    main()
  File "/usr/lib/python2.7/site.py", line 536, in main
    known_paths = addusersitepackages(known_paths)
  File "/usr/lib/python2.7/site.py", line 268, in addusersitepackages
    user_site = getusersitepackages()
  File "/usr/lib/python2.7/site.py", line 243, in getusersitepackages
    user_base = getuserbase() # this will also set USER_BASE
  File "/usr/lib/python2.7/site.py", line 233, in getuserbase
    USER_BASE = get_config_var('userbase')
  File "/usr/lib/python2.7/sysconfig.py", line 535, in get_config_var
    return get_config_vars().get(name)
  File "/usr/lib/python2.7/sysconfig.py", line 434, in get_config_vars
    _init_posix(_CONFIG_VARS)
  File "/usr/lib/python2.7/sysconfig.py", line 298, in _init_posix
    raise IOError(msg)
IOError: invalid Python installation: unable to open /usr/include/python2.7/pyconfig.h (No such file or directory) 

原因据说是python的配置有问题，然后就选择了自己加入镜像，这里选择的是电子科技大学的源，想添加其他源可以去官方源列表里面找，

在make.conf下添加如下语句：

############
GENTOO_MIRRORS="ftp://mirrors.stuhome.net/gentoo http://mirrors.stuhome.net/gentoo"
SYNC="rsync://mirrors.stuhome.net/gentoo-portage"

参考：http://www.lingcc.com/2008/02/27/9904/