On Wed, Aug 22, 2007 at 10:32:36AM +0100, Simon Peyton-Jones wrote: > | There is an interest in removing GMP, motivated partly by licensing but > | also due to portabiltity concerns and the fact that the use of GHC's > | memory manager in GMP prevents FFI code from using GMP safely. > | > | http://hackage.haskell.org/trac/ghc/wiki/ReplacingGMPNotes > > Just to summarise our position at GHC HQ on this question:
> * We don't much like bundling GMP either. But it works and it's fast. ... > * We'd be very happy to have others work on a replacement > (a) using a another C library > (b) using a Haskell library ... > * To replace GMP altogether we'd need to be convinced that > we would not lose much performance. ... > * There are one or two arbitrary precision libraries in Haskell > eg http://www.haskell.org/pipermail/libraries/2007-August/007909.html Another possibility that occured to me recently, is to switch Integer to a simpler (perhaps even pure-Haskell) representation, and provide (core? extra? Hackage?) a hsgmp package. If you have big numbers, switching is easy: import Prelude hiding(Integer) import Data.Integer.GMP type Integer = MPZ Stefan
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