[Haskell-cafe] DSL for task dependencies

Neil Davies semanticphilosopher at gmail.com
Fri Mar 18 10:18:20 CET 2011

I've always liked the semantics of Unity - they seem the right sort of  
thing to construct such a system on - they also permit concepts such  
as partial completion and recovery from failure. Used to use this as  
one of the concurrency models I taught - see http://www.amazon.com/Parallel-Program-Design-Mani-Chandy/dp/0201058669 

It is one of those friday afternoon thoughts about constructing  
distributed, fault tolerant systems that have formal semantics, can  
have a rich set of pre/post conditions so that 'average joe' could  
write script-lets in it and it could take over the monitoring and  
(normal) fault management of some of our distributed systems.

On 18 Mar 2011, at 04:43, Conal Elliott wrote:

> Speaking of which, for a while now I've been interested in designs  
> of make-like systems that have precise & simple (denotational)  
> semantics with pleasant properties. What Peter Landin called  
> "denotative" (as opposed to functional-looking but semantically ill- 
> defined or intractable).
> Norman Ramsey (cc'd) pointed me to the Vesta system from DEC SRC. If  
> anyone knows of other related experiments, I'd appreciate hearing.
>   - Conal
> On Thu, Mar 17, 2011 at 1:31 PM, David Peixotto <dmp at rice.edu> wrote:
> Hi Serge,
> You may be thinking of the Shake DSL presented by Neil Mitchell at  
> last years Haskell Implementers Workshop. Slides and video are  
> available from: http://haskell.org/haskellwiki/HaskellImplementorsWorkshop/2010
> Max Bolingbroke has an open source implementation available here: https://github.com/batterseapower/openshake
> Hope that helps.
> -David
> On Mar 17, 2011, at 3:00 PM, Serge Le Huitouze wrote:
> > Hi Haskellers!
> >
> > I think I remember reading a blog post or web page describing a
> > EDSL to describe tasks and their dependencies "a la" make.
> >
> > Can anyone point me to such published material?
> >
> > Thanks in advance.
> >
> > --serge
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