Re: Proposal: overhaul System.Process

Hello, I think it's great to improve System.Process, and the new interface looks good... I just wanted to say that I found it quite easy to write my own wrappers around those functions, which implement an interface that I find easier to use, several years ago. The hardest part was not so much writing the new interface, but updating it whenever the standard interface changed and broke my code. So I'd like to cast my vote for backwards compatibility. The standard libraries will never be perfect, but constantly deprecating and removing functionality can really impair their usefulness for large projects. I don't mean to be negative but I wanted to voice that concern. Best wishes, Frederik Simon Marlow-7 wrote:

I've made some improvements to System.Process that I'd like to get feedback on. Everything so far is backwards compatible in the sense that I've only added to the API - everything that was there before is still available, with the same semantics (except where bugs have been fixed).

Haddock for the proposed new System.Process:

http://darcs.haskell.org/~simonmar/process/System-Process.html

Ticket:

http://hackage.haskell.org/trac/ghc/ticket/2233

Discussion period: 4 weeks (20 May)

Summary of changes:

Tue Apr 22 15:02:16 PDT 2008 Simon Marlow * Overhall System.Process

- fix #1780: pipes created by runInteractiveProcess are set close-on-exec by default

- add a new, more general, form of process creation: createProcess Each of stdin, stdout and stderr may individually be taken from existing Handles or attached to new pipes. Also it has a nicer API.

- add readProcess from Don Stewart's newpopen package. This function behaves like C's popen().

- Move System.Cmd.{system,rawSystem} into System.Process. Later we can depecate System.Cmd.

- Don't use O_NONBLOCK for pipes, as it can confuse the process attached to the pipe (requires a fix to GHC.Handle in the base package).

- move the tests from the GHC testsuite into the package itself, and add a couple more

- bump the version to 2.0 _______________________________________________ Libraries mailing list Libraries@haskell.org http://www.haskell.org/mailman/listinfo/libraries

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