liuxg@liuxg:~$ sudo apt-get install ubuntu-sdk ubuntu-sdk-libs-dev qtcreator-plugin-ubuntu
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:
qtcreator-plugin-ubuntu : Depends: click-dev
Depends: python3-scope-harness but it is not going to be installed
Depends: unity-scope-tool but it is not going to be installed
Depends: gdb-multiarch but it is not going to be installed
Depends: schroot but it is not going to be installed
Recommends: qtsvg5-examples but it is not going to be installed
Recommends: qtcreator-plugin-go but it is not going to be installed
ubuntu-sdk-libs-dev : Depends: ubuntu-sdk-libs but it is not going to be installed
Depends: libnet-cpp-dev but it is not going to be installed
Depends: libqt5sensors5-dev but it is not going to be installed
Depends: libqt5svg5-dev but it is not going to be installed
Depends: libqt5websockets5-dev but it is not going to be installed
Depends: libqt5xmlpatterns5-dev but it is not going to be installed
Depends: libunity-scopes-dev but it is not going to be installed
Depends: qt3d5-dev but it is not going to be installed
Depends: qt5-default but it is not going to be installed
Depends: qtdeclarative5-dev but it is not going to be installed
Depends: qtlocation5-dev but it is not going to be installed
Depends: qtmultimedia5-dev but it is not going to be installed
Depends: qttools5-dev but it is not going to be installed
Recommends: ubuntu-html5-theme-examples
E: Unable to correct problems, you have held broken packages.