我正在尝试在 Ubuntu 上安装caffee，torch但存在一些未解决的依赖关系问题。我在网上搜索了好几天，但仍然无法修复。有人可以帮忙吗？谢谢。
以下是终端中显示的错误：
The following packages have unmet dependencies:
libopencv-dev : Depends: libopencv-objdetect-dev (= 2.4.9.1+dfsg+1.5ubuntu1) but it is not going to be installed
Depends: libopencv-highgui-dev (= 2.4.9.1+dfsg-1.5ubuntu1) but it is not going to be installed
Depends: libopencv-legacy-dev (= 2.4.9.1+dfsg-1.5ubuntu1) but it is not going to be installed
Depends: libopencv-contrib-dev (= 2.4.9.1+dfsg-1.5ubuntu1) but it is not going to be installed
Depends: libopencv-videostab-dev (= 2.4.9.1+dfsg-1.5ubuntu1) but it is not going to be installed
Depends: libopencv-superres-dev (= 2.4.9.1+dfsg-1.5ubuntu1) but it is not going to be installed
Depends: libopencv-ocl-dev (= 2.4.9.1+dfsg-1.5ubuntu1) but it is not going to be installed
Depends: libcv-dev (= 2.4.9.1+dfsg-1.5ubuntu1) but it is not going to be installed
Depends: libhighgui-dev (= 2.4.9.1+dfsg-1.5ubuntu1) but it is not going to be installed
Depends: libcvaux-dev (= 2.4.9.1+dfsg-1.5ubuntu1) but it is not going to be installed
root@mingchuan-ThinkPad-T420:~/torch $ sudo apt-get install --no-install-recommends libboost-all-dev
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:
libboost-all-dev : Depends: libboost-date-time-dev but it is not going to be installed
Depends: libboost-filesystem-dev but it is not going to be installed
Depends: libboost-iostreams-dev but it is not going to be installed
Depends: libboost-log-dev but it is not going to be installed
Depends: libboost-system-dev but it is not going to be installed
Depends: libboost-thread-dev but it is not going to be installed
Depends: libboost-wave-dev but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
root@mingchuan-ThinkPad-T420:~/torch#