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Today's Topics:
1. Re: conduit and happstack dependence problem (Jeremy Shaw)
2. Re: Beginners Digest, Vol 52, Issue 16 (Gregory Guthrie)
3. Re: parsec problem (Tobias)
4. Re: parsec problem (Christian Maeder)
----------------------------------------------------------------------
Message: 1
Date: Fri, 12 Oct 2012 15:28:08 -0500
From: Jeremy Shaw <[email protected]>
Subject: Re: [Haskell-beginners] conduit and happstack dependence
problem
To: [email protected]
Cc: ??????? ??? <[email protected]>, [email protected]
Message-ID:
<CAGE_JKbv-y9Vz9+YpVVo0FXvqqJn0UpCKQZR8=66t+xpx1_...@mail.gmail.com>
Content-Type: text/plain; charset=KOI8-R
The highest version of transformers on hackage is transformers-0.3.0.0.
The darcs version of transformers is only at 0.3.1.0:
http://code.haskell.org/~ross/transformers/transformers.cabal
And even in the git version of conduits.cabal:
https://github.com/snoyberg/conduit/blob/master/conduit/conduit.cabal
the version bounds is:
transformers >= 0.2.2 && < 0.4
According to packdeps the only upper bounds limitation with
happstack-server at the moment is base64-bytestring:
$ packdeps happstack-server/happstack-server.cabal
happstack-server-7.0.4: Cannot accept the following packages
base64-bytestring 1.0.0.0
I'll bump that in the near future.
- jeremy
On Fri, Oct 12, 2012 at 2:59 PM, Antoine Latter <[email protected]> wrote:
> CCing happstack mailing list.
>
> On Fri, Oct 12, 2012 at 1:52 PM, ??????? ??? <[email protected]>
> wrote:
>> I'm using conduit to download and parsing file. Conduit depens on
>> transformers >= 0.4.
>> Now I'm going to use happstack, but happstack-server depends on transformers
>> < 0.4.
>> Is there a way to use conduit and happstack together?
>>
>>
>> _______________________________________________
>> Beginners mailing list
>> [email protected]
>> http://www.haskell.org/mailman/listinfo/beginners
>>
>
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------------------------------
Message: 2
Date: Fri, 12 Oct 2012 15:28:55 -0500
From: Gregory Guthrie <[email protected]>
Subject: Re: [Haskell-beginners] Beginners Digest, Vol 52, Issue 16
To: "[email protected]" <[email protected]>
Message-ID:
<[email protected]>
Content-Type: text/plain; charset="us-ascii"
I am trying to install yesod,
But it fails and one of the failures is to install http-conduit.
So I tried to install that, and it fails, with this message:
Building http-conduit-1.6.1.1...
Preprocessing library http-conduit-1.6.1.1...
<command line>: cannot satisfy -package-id
asn1-data-0.7.1-25c9f2b3799c26151af97c0d9c79754c:
asn1-data-0.7.1-25c9f2b3799c26151af97c0d9c79754c is unusable due to missing
or recursive dependencies:
base-4.5.0.0-597748f6f53a7442bcae283373264bb6
bytestring-0.9.2.1-df82064cddbf74693df4e042927e015e
cereal-0.3.5.2-b01d76d961ef4facbe3e52a7b6ccef63
mtl-2.1.1-87121149c5eb4fc03f06f5894ea4ac0c
text-0.11.2.0-b2986f5478f0efa626f8ba0494ed9670
(use -v for more information)
Failed to install http-conduit-1.6.1.1
cabal.exe: Error: some packages failed to install:
http-conduit-1.6.1.1 failed during the building phase. The exception was:
ExitFailure 1
Any hints?
I find that with each usage of cabal-install, my success rate and appreciation
for it falls! :-)
Each time it fails, and says to -force-reinstalls, that breaks more, etc... Not
sure how to break out of this maze of "twisty turny passages that all look
alike"..
Haskell-platform 2.0.0, GHCi, version 7.4.1
cabal-install version 0.14.0
using version 1.14.0 of the Cabal library
-------------------------------------------
------------------------------
Message: 3
Date: Sat, 13 Oct 2012 00:38:12 +0200
From: Tobias <[email protected]>
Subject: Re: [Haskell-beginners] parsec problem
To: "[email protected]" <[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"
Ok, I managed it by using a modified sepBy / sepBy1:
/" ... x//s////<-////many////(//sep////>>////p//) ... "/ changed to /"
... x//s////<-////many////(//try (sep////>>////p//)) ..."/
Regards,
Tobias/
/On 10/12/2012 07:20 PM, Tobias wrote:
> Hello,
>
> I would like to parse the input "word1 word2 word3 ." into
> ["word1","word2","word3"] using Parsec.
>
> My code below fails with:
> /> unexpected "."//
> //> expecting letter or digit
>
> /I guess the problem is that the blank before the dot is considered as
> belonging to the "sepBy word blank" parsing and therefore a next word
> is expected, and it is missing.
> I would like the "sepBy word blank" parsing to stop after "word3".
> How can I do this?
> /
> //sentence :: Parser [String]//
> //sentence = do words <- word `sepBy` blank//
> // blank//
> // oneOf ".?!"//
> // return words//
> //
> //word :: Parser String//
> //word = many1 (letter <|> digit) //
> //
> //blank :: Parser String//
> //blank = string " "
>
> /Regards,
> Tobias
>
>
> _______________________________________________
> Beginners mailing list
> [email protected]
> http://www.haskell.org/mailman/listinfo/beginners
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Message: 4
Date: Sat, 13 Oct 2012 10:51:09 +0200
From: Christian Maeder <[email protected]>
Subject: Re: [Haskell-beginners] parsec problem
To: Tobias <[email protected]>
Cc: "[email protected]" <[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hi Tobias,
the "proper" way is to skip white spaces after each token.
Leading white spaces are skipped only once at the beginning.
lex :: Parser a -> Parser a
lex = (<* spaces) -- skip trailing blanks
sentence = many (lex word) <* lex (oneOf ".?!")
-- finally
alltext = spaces *> many sentence
HTH Christian
Am 12.10.2012 19:20, schrieb Tobias:
> Hello,
>
> I would like to parse the input "word1 word2 word3 ." into
> ["word1","word2","word3"] using Parsec.
>
> My code below fails with:
> /> unexpected "."//
> //> expecting letter or digit
>
> /I guess the problem is that the blank before the dot is considered as
> belonging to the "sepBy word blank" parsing and therefore a next word is
> expected, and it is missing.
> I would like the "sepBy word blank" parsing to stop after "word3".
> How can I do this?
> /
> //sentence :: Parser [String]//
> //sentence = do words <- word `sepBy` blank//
> // blank//
> // oneOf ".?!"//
> // return words//
> //
> //word :: Parser String//
> //word = many1 (letter <|> digit) //
> //
> //blank :: Parser String//
> //blank = string " "
>
> /Regards,
> Tobias
>
>
------------------------------
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