一段时间以来，我一直在尝试安装 Clang3.8 或任何其他版本的 clang。但每次我都会遇到一些未满足的依赖关系的问题。
bonde@Bonde-Laptop:~$ sudo apt-get install clang-3.8
[sudo] password for bonde:
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-3.8 : Depends: libclang1-3.8 (= 1:3.8~svn278388-1~exp1) but it is not going to be installed
Depends: libobjc-4.8-dev but it is not going to be installed
Recommends: llvm-3.8-dev but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
我尝试了在网上找到的所有解决方案，但似乎都没有用。
希望您能帮助我或为我指明正确的方向。甚至可以向我解释发生了什么，以便我将来可以自己修复它。