[Haskell-cafe] Picking an architecture for a Haskell web app

[Brandon S. Allbery KF8NH]

On May 10, 2007, at 11:37 , Andrew Coppin wrote:

> I've crawled all over the webpage, and I can't see any  
> documentation anywhere to this effect, but presumably all this  
> dynamic goodness only works if GHC is installed, right?

Yes, it's GHC-specific.

> BTW... Does lambdabot seriously take every expression you type and  
> compile it to a binary executable, dynamically link it, and execute  
> it? I was expecting it to just run a simple source-level  
> interpreter...

There ain't no such thing, and if it were it'd be painful at best.   
Future versions of lambdabot *might* use ghc-api instead, but yes, it  
really does compile and link a program.  I think that allows it to  
exercise tighter control over what is permitted to execute, i.e. hide  
everything capable of I/O actions.

-- 
brandon s. allbery [solaris,freebsd,perl,pugs,haskell] allbery at kf8nh.com
system administrator [openafs,heimdal,too many hats] allbery at ece.cmu.edu
electrical and computer engineering, carnegie mellon university    KF8NH