replacement for popen

David Brown haskell at
Tue Apr 12 11:38:01 EDT 2005

On Tue, 12 Apr 2005 14:22:00 +0200, Uwe Schmidt <uwe at> wrote:

> in the ghc-6.4 release the posix module is deprecated.

I assume you're referring to popen not being available.  I hope that all  
of System.Posix isn't being deprecated.  As far as your problem, Simon  
answered it well.  I would suggest doing explicit I/O on pipes.

Also, I have a suggest for Posix.IO.  It would be nice to have something  
equivalent to hGetBuf and hPutBuf for Posix FDs.  I can make handles and  
use h{Get|Put}Buf, but there is extra overhead, or I can just implement  
fdGetBuf and fdPutBuf.  The idea is to do efficient, unbuffered I/O.


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