Clang：依赖：clang-3.8 (>= 3.8~) 但是它将不会被安装

Question

04，我尝试使用以下命令安装 clang

`sudo apt install clang`

但出现以下错误

Reading package lists... Done
    Building dependency tree       
    Reading state information... Done
    Some packages could not be installed. This may mean that you have
    requested an impossible situation or if you are using the unstable
    distribution that some required packages have not yet been created
    or been moved out of Incoming.
    The following information may help to resolve the situation:
    
    The following packages have unmet dependencies:
     clang : Depends: clang-3.8 (>= 3.8~) but it is not going to be installed
    E: Unable to correct problems, you have held broken packages.

任何帮助将非常感激。