Find out username of the current user in Windows in Haskell?

Question

I hope I have not missed an obvious answer to this somewhere, but in case I have - I apologise.

System.Posix.User feature a getLoginName for finding the login name of the currently logged in user. Now, what would work for getting the same information on the Windows platforms?

Answer 1

As USERNAME environment variable contains the name of the user currently logged on in a windows system, you can use that to find out the username:

import System.Environment

main = getEnv "USERNAME" >>= print