Hello Simon PJ, Simon Peyton-Jones wrote:
Did you get a reply to this? I assume you use a function from the Posix library. Sigbjorn may have comments on how much of it works on Windows.
No, I got no reply. I think the answer to the question "How much of the Posix library works under Windows" is "None", because the current binary distribution of ghc for Windows is compiled without cygwin support and so can't do the Posix stuff. In the end I downloaded some example C code from Microsoft's web site and adapted it to suit my needs, planning to access it via the FFI. (The whole idea looks like being abandoned anyway because of the lack of cooperation of another program.) By the way, Simon PJ, I shall be on holiday from Monday until after Easter so can't do any more myself on tracking down that multi-parameter type classes problem, unfortunately. Best wishes, George