Proposal: Remove Data.HashTable from base

[Edward Kmett]

+1

On Thu, Jun 14, 2012 at 5:04 PM, Ian Lynagh <ian at well-typed.com> wrote:

>
> Hi all,
>
> Historically, Data.HashTable has been in base because Data.Typeable used
> it, but that is no longer the case.
>
> I propose that we:
> * Mark it as deprecated in the base that comes with GHC 7.6.
> * Remove it from the base that comes with GHC 7.8.
>
> Rationale:
> * Historically there have been performance problems with it, and we have
>  been recommending people not to use it. I'm not sure if that's still
>  the case or not.
> * If it is still useful then it would fit better in the containers
>  package. However, as there is no reason that it needs to be tied to
>  the GHC release schedule etc, it would be even better to put it in
>  another package.
>
> In GHC, deSugar/Coverage.lhs does use the module, but only for
> hashString. We could put this elsewhere in base, but I think it would be
> better just to copy the definition into the GHC source.
>
>
> Suggested discussion deadline: Fri 29 June 2012.
>
>
> Thanks
> Ian
>
>
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