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Currently snapshots are only available for Windows users, this describes how to install and test Yhc on Windows.


  1. Create a folder called Yhc.
  2. Download the snapshot http://www.cs.york.ac.uk/fp/yhc/snapshot/yhc-latest.zip in that folder.
  3. Extract, using WinZip or similar.
  4. Go to My Computer, right click Properties, Advanced, Environment Variables:
  5. Add the folder to yhc.exe to your PATH variable.


Now, to test, open a command window anywhere and type in:

 echo main = print 42 > Main.hs
 yhc Main
 yhi Main

You should see the number 42 appear.