Proposal: Add the unordered-containers package and the hashable package to the Haskell Platform

Johan Tibell johan.tibell at
Tue Mar 19 17:43:01 CET 2013

On Tue, Mar 19, 2013 at 9:19 AM, Thomas Schilling
<nominolo at>wrote:

> Oh, I just realised that this proposal is to include the older version
> of hashable.  In principle, I'm not against that, but I do wonder what
> the upgrade path is.  I don't think the performance problems can be
> fixed in general -- that's just the price of security.  So it becomes
> critical what the upgrade path looks like.  Do users get a slowdown of
> 2x by default and then have to manually make it faster again if
> something is not security sensitive?  Do users have to explicitly opt
> in for security (a bad default, IMO)?  Do we have any idea how that
> switch may affect the API?

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