[arch-haskell] [jgm@berkeley.edu: Re: Pandoc restriction for Parsec <3]

Magnus Therning magnus at therning.org
Wed Feb 17 05:11:23 EST 2010

On Tue, Feb 16, 2010 at 19:13, Don Stewart <dons at galois.com> wrote:
> magnus:
>> On 16/02/10 01:09, Don Stewart wrote:
>> > The main user of parsec -- pandoc -- is *not* going to move to parsec 3,
>> > since it is twice as slow.
>> >
>> > That means that neither is the Haskell Platform
>> >
>> > That means that we should downgrade to parsec 2 on arch and *not move to
>> > parsec 3 for the foreseeable future*.
>> Is there any plan to still provide parsec 3 in Arch?
> I think if we can convince vegai to move haskell-parsec to parsec 2,
> then we can add special support for parsec 3.
> Then add support to cabal2arch to substitute.

That would be excellent.

Does anyone know if the speed issues in parsec 3 are inherent in the
algorithms used, or if a bit of profiling and optimisation will bring
it to par with parsec 2?  (I'll take my answer in the form of a link
to a discussion on haskell-cafe if possible ;-)


Magnus Therning                        (OpenPGP: 0xAB4DFBA4)
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