transformers versus mtl

Sittampalam, Ganesh ganesh.sittampalam at
Sun Mar 22 17:23:27 EDT 2009

Brandon S. Allbery KF8NH wrote:
> On 2009 Mar 22, at 2:31, Sittampalam, Ganesh wrote:
>> Henning Thielemann wrote:
>>> I don't like people forcing this way, as I for myself could spend my
>>> whole life keeping my Haskell libraries up-to-date without adding
>>> any feature or fixing any bug. I think, mtl should be removed from
>>> extralibs, but it should not be upgraded in an incompatible way. We
>>> would break packages, not more.
>> I think that after the relative chaos of the base 2 -> base 3
>> upgrade, the general policy nowadays is to minimise disruption when
>> changing things. Completely removing a package from extralibs seems
>> quite disruptive to me.
> But the ultimate objective is for all of extralibs to go away in
> favor of the Haskell Platform, isn't it?  That will assuredly be
> disruptive,

At that point the recommended installation route will be of the
not of "just GHC". The first Platform release will be precisely
+ cabal-install + deps, so there won't be any disruption assuming that
people follow that recommendation.

> but the current situation is arguably even more
> disruptive because random packages are forced to update when ghc
> development leads to an update.    



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