想安装jsoncpp，https://github.com/open-source-parsers/jsoncpp
说明：“首先，安装介子（需要 Python3）和忍者”
运行 sudo apt-get install meson ninja 结果：
sudo apt-get install meson ninja
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:
meson : Depends: ninja-build but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
尝试安装 ninja 会删除介子，安装介子会删除 ninja