[Haskell] Tools for web-based Haskell editing & compilation?

[Donald Bruce Stewart]

conal:
> Has anyone set up GHC to run on a server with modules created, saved,
> edited, imported, and executed via a web interface?? Are there tools
> existing or under development that support some or all of this scenario?

Sounds a bit like Pivot, I think.
    http://www.cs.kent.ac.uk/projects/pivotal

with some flavour of HSP behaving as a compiler server?
    http://www.cs.chalmers.se/~d00nibro/hsp
and hasp:
    http://scannedinavian.com/~lemmih/hasp
    
-- Don