title: msbuild, how to set environment variables?
body: <p>I am trying to set environment variables using project file (ex. .vcxproj)</p>
  
  <p>I looked at property functions but it didn't seem to have such function.</p>
  
  <p>I know there is a way to retrieve environment variable but couldn't find how to set it.</p>
  
  <p>I feel like there should be way to set environment variables in project file.</p>