[Haskell-cafe] Re: 2008-10-12 Hackage status with GHC 6.10 release
wren ng thornton
wren at freegeek.org
Thu Oct 16 05:45:47 EDT 2008
Simon Marlow wrote:
> wren ng thornton wrote:
>> Simon Marlow wrote:
>>> Don Stewart wrote:
>>> > * GHC.Prim was moved,
>>> Nobody should be importing GHC.Prim, use GHC.Exts instead.
>> This is oft declared, but as things stand I don't think it's a tenable
>> position. If someone's bothering to dig as far as GHC.Exts then it's
>> very likely they're trying to optimize numeric computations and for
>> that there are a number of functions in GHC.Prim which are essential,
>> in particular the fast conversion functions for numeric types. If
>> those were moved to GHC.Exts then I think many people would be more
>> inclined to heed the advice.
> GHC.Exts re-exports the whole of GHC.Prim. There's no reason to import
> GHC.Prim at all. Admittedly this isn't immediately obvious from the
> documentation, but it is there. Hopefully in the future we can improve
> Haddock so that it'll be able to paste in the whole of GHC.Prim into the
> GHC.Exts documentation, and we can then hide GHC.Prim.
On more recent checking that seems to be the case, however I do recall
having issues with it in the past. Seems to work on 6.6 too so I'll
switch my stuff over.
FWIW, if you explicitly re-export the entities by name Haddock will
paste them in (though that's a lot of copying in the export list).
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