我在Ubuntu V14.04.3上安装了MonoDevelop的最新版本（V5.10）。安装后我尝试安装monodevelop-database，但安装失败
sudo apt-get install monodevelop-database
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:
monodevelop-database : Depends: libmono-npgsql4.0-cil (>= 1.0) but it is not going to be installed
Depends: libmono-system-data2.0-cil (>= 3.12.0) but it is not going to be installed
Depends: monodevelop (< 5.7.0.660.) but 5.10.0.871-0xamarin2 is to be installed
E: Unable to correct problems, you have held broken packages.
我尝试过安装-f和update / upgrade命令，但这并没有解决问题。有谁知道解决方案？
提前致谢， 约迪