how to terminate an external program after timeout?

[Christian Maeder]

Hi,

we call from our haskell application the metis prover via

 System.Process.readProcessWithExitCode "metis" filename ""

However, we are not able to get rid of this process if metis does not
terminate by itself. In particular, wrapping this call into a
System.Timeout.timeout does not work.

Any suggestions how we should handle this ideally portably but first of
all under unix. (ghc-6.12.3)

Thanks Christian