仅在安装了另一个软件包时才安装msi软件包

I have 2 msi packages 1 called the core package in which i want the second package to check before installation if the core package is installed, if yes then the installation occurs normally, if not then the second package wont be installed telling me that you need to install the core package first before installing,I have 2 msi packages 1 called the core package