[Haskell-cafe] Closest analog to popen()

Hi, Does there exist any analog of popen in the standard Haskell libraries? I need to execute an external program (not a Haskell funciton) - maybe in a shell, being able to feed something to its stdin, and finally catch the exit code. Does there exist a way to do this without dealing with multithreading, writing my own ffi and other stuff? Something like rawSystem, but acting asynchronously (returning a writeable pipe handle, and a process ID), and later I would use getProcessStatus to catch the exit code. PS I have found http://community.moertel.com/ss/space/Tom's+Haskell+code/POpen.hs so far, but it does not seem to be part of the standard library. -- Dimitry Golubovsky Anywhere on the Web