How to access environment variables in gradle java build script

Question

How can I access environment variables (either user level or system level) in gradle java build script.
I am new to gradle and I am trying to build my project using the gradle.
Presently I have hardcoded the path of third party jars as shown in the script below

repositories {
   flatDir  {
           dirs 'D:\\lib'
   }
}

I have created an environment variable "Third_Party" in enviroment variable:

Third_Party=D:\lib

How can I use this variable i.e. "Third_Party" instead of hardcoding the library path in script.
Please tell the exact syntax

Answer 1

try this way System.getenv("env var name") like

home = System.getenv('Third_Party')

task env_read << {
    println "$System.env.HOME"
    //Other way of accessing the environment variable.
    println  System.getenv('Third_Party')
}