replacement for popen

[Simon Marlow]

On 13 April 2005 07:53, Uwe Schmidt wrote:

> I tried
> 
>> forkIO(evaluate(length res) >> return ())
> 
> but this version again blocks.

You are compiling with -threaded, right?  It's needed for non-blocking
waitForProcess.  The docs do mention this.

Cheers,
	Simon