[Haskell-cafe] DPH and GHC 7.0.1

Andrew Coppin andrewcoppin at btinternet.com
Tue Nov 30 21:15:47 CET 2010

On 29/11/2010 01:42 AM, Manuel M T Chakravarty wrote:
> Andrew Coppin:
>> I was wondering about this myself, actually. I'm especially surprised since I thought the DPH implementation was hard-wired into the compilter itself (in which case, how can you distribute it seperately?)
>> Then again, I've never yet even tried using DPH. (The wiki page looks very out of date, so I don't know how much to trust its information.)
> As David said, we will release the DPH libraries separately, but at the same time as GHC 7.0.2.  DPH consists essentially of two components (a) the vectoriser, a program transformer hardwired into GHC and (b) the DPH libraries.  At the request of the Haskell Platform people we separated the DPH library packages from the standard GHC distribution and will distribute them via Hackage.
> The wiki page will be updated in time for that release.
> Manuel

I would have thought that the two components would be so tightly coupled 
that this wouldn't work. But then again, you presumably know a lot more 
about it than I ever will.

Anyway, thanks for the clarification.

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