Hello, I am trying to write my own pOpen for Haskell. I have a version that works fine in GHC, but I can't quite make it work in Hugs. There are two things missing: the ability to fork and the ability to install a signal handler for SIGPIPE. First, on the forking. There is a vague note on http://cvs.haskell.org/Hugs/pages/libstatus.html about co-operative concurrency. I don't understand why this is relevant. If I want to fork, let me fork; using a low-level function implies that the programmer knows what's going on anyway. I have no intention of using any other sort of concurrency in this program, so there should be no problem. Moreover, Hugs has a call to system(), which internally must use fork() anyway. (I'm puzzled why rawSystem() is missing; somewhere, FFI must have been used to get to system(), right?) The same note applies to signals, and again, I'm not sure why. Also, Hugs doesn't seem to have System.Process, though there's no note explaining why it is not present. I'm probably missing something important here, but I can't figure out what it is. Lacking these functions really diminishes Hugs' usefulness as a scripting language to me, which is a shame; it would make a great one. Thanks, -- John