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Today's Topics:
1. Re: Network.HTTP basics (Barbara Shirtcliff)
2. Dependence issue (Alexey G)
3. Re: Dependence issue (Krzysztof Skrz?tnicki)
4. Re: Dependence issue (Alexey G)
----------------------------------------------------------------------
Message: 1
Date: Fri, 01 Apr 2011 21:11:27 +0000
From: "Barbara Shirtcliff" <ba...@gmx.com>
Subject: Re: [Haskell-beginners] Network.HTTP basics
To: "Daniel Fischer"
<daniel.is.fisc...@googlemail.com>,beginners@haskell.org
Message-ID: <20110401211127.201...@gmx.com>
Content-Type: text/plain; charset="utf-8"
Yay! ? Thank you!
> ----- Original Message -----
> From: Daniel Fischer
> Sent: 04/01/11 02:04 PM
> To: beginners@haskell.org
> Subject: Re: [Haskell-beginners] Network.HTTP basics
>
> On Friday 01 April 2011 21:42:19, Barbara Shirtcliff wrote:
> > Hi, this is small, but this is the beginners list, so here goes:
> >
> > I can see how to use HTTP to request a page. for example, this works:
> >
> >
> > Prelude Network.HTTP> let respgoogle = simpleHTTP $ getRequest
> > "http://google.com"; Prelude Network.HTTP> respgoogle
> > Right HTTP/1.1 301 Moved Permanently
> > Location: http://www.google.com/
> > Content-Type: text/html; charset=UTF-8
> > Date: Fri, 01 Apr 2011 17:31:25 GMT
> > Expires: Sun, 01 May 2011 17:31:25 GMT
> > Cache-Control: public, max-age=2592000
> > Server: gws
> > Content-Length: 219
> > X-XSS-Protection: 1; mode=block
> > Connection: close
> >
> > that looks really nice, but hey, what if I want to see what's in the
> > content? It isn't immediately clear to me from the documentation at
> > http://hackage.haskell.org/packages/archive/HTTP/4000.1.1/doc/html/Netw
> > ork-HTTP.html .
>
> stuff = do
> ?answer <- respgoogle
> ?case answer of
> ?Left connErr -> putStrLn "Got a connection error:" >> print connErr
> ?Right result -> do
> ?let goodies = rspBody result
> ?putStrLn goodies -- or do something sensible
>
> >
> > In the end, I'll be working with JSON, here, but I need to know how to
> > get to it, and the examples in the documentation don't work (i.e. don't
> > appear to be up to date). I'm not very experienced with Haskell, so,
> > it's pretty opaque.
> >
> > Thanks,
> > Bar
> >
------------------------------
Message: 2
Date: Sat, 2 Apr 2011 01:46:25 +0300
From: Alexey G <kreed...@gmail.com>
Subject: [Haskell-beginners] Dependence issue
To: beginners@haskell.org
Message-ID:
<AANLkTikegSFhpEMu7ws_C2YgLc=cunbo5ppzrjds_...@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
Hello. I have some trouble with HDBC-mysql package (
http://hackage.haskell.org/package/HDBC-mysql).
It depends on base (<4), but in GHC 7 - base 4.3.1.
I download a HDBC-mysql package and change dependence in .cabal file to base
(<5). It works fine.
But I want to build another package that depend on HDBC-mysql and cabal
check dependencies from the hackage, where is HDBC-mysql depend on base
(<4).
What I should do?
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Message: 3
Date: Sat, 2 Apr 2011 01:08:53 +0200
From: Krzysztof Skrz?tnicki <gte...@gmail.com>
Subject: Re: [Haskell-beginners] Dependence issue
To: Alexey G <kreed...@gmail.com>
Cc: beginners@haskell.org
Message-ID:
<AANLkTimQGo3E+5r_RSt1pWsKjbOdM+r3=s-moxotz...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Changing the dependency isn't enough. You also want to bump the version
number (say, A.B.C.D into A.B.C.D.1) and make your project depend on the
bumped version. This way cabal wont find that version anywhere but in
installed database and will continue just fine.
If the library works fine under base-4 you might also contact the developer
so that he can upload the new version which will allow you to drop that hack
altogether.
Working with such locally-changed versions can be easier if you try
cabal-devel tool or similar.
But I think might consider another solution: don't use that library. As HDBC
docs<http://hackage.haskell.org/packages/archive/HDBC/2.2.6.1/doc/html/Database-HDBC.html>says:
ODBC Available from http://software.complete.org/hdbc-odbc. Or, to
partitipace in development, use git clone git://git.complete.org/hdbc-odbc
MySQL MySQL users have two choices: the first is the ODBC driver, which
works and has been tested against MySQL on both Linux/Unix and Windows
platforms. There is also an *alpha-quality* native MySQL driver available
for download at
http://hackage.haskell.org/cgi-bin/hackage-scripts/package/HDBC-mysql with a
homepage at http://www.maubi.net/~waterson/hacks/hdbc-mysql.html.
So clearly, HDBC developer(s?) think that HDBC-odbc is the way.
Best regards,
Krzysztof Skrz?tnicki
On Sat, Apr 2, 2011 at 00:46, Alexey G <kreed...@gmail.com> wrote:
> Hello. I have some trouble with HDBC-mysql package (
> http://hackage.haskell.org/package/HDBC-mysql).
> It depends on base (<4), but in GHC 7 - base 4.3.1.
> I download a HDBC-mysql package and change dependence in .cabal file to
> base (<5). It works fine.
> But I want to build another package that depend on HDBC-mysql and cabal
> check dependencies from the hackage, where is HDBC-mysql depend on base
> (<4).
>
> What I should do?
>
> _______________________________________________
> Beginners mailing list
> Beginners@haskell.org
> http://www.haskell.org/mailman/listinfo/beginners
>
>
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Message: 4
Date: Sat, 2 Apr 2011 02:15:40 +0300
From: Alexey G <kreed...@gmail.com>
Subject: Re: [Haskell-beginners] Dependence issue
To: beginners@haskell.org
Message-ID:
<AANLkTi=h4WaEHz__uNL=mho5hlznc+zrr_7wnj5jb...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Thank you! I already rapport about this issue to the mantainer of
HDBC-mysql.
2011/4/2 Krzysztof Skrz?tnicki <gte...@gmail.com>
> Changing the dependency isn't enough. You also want to bump the version
> number (say, A.B.C.D into A.B.C.D.1) and make your project depend on the
> bumped version. This way cabal wont find that version anywhere but in
> installed database and will continue just fine.
>
> If the library works fine under base-4 you might also contact the developer
> so that he can upload the new version which will allow you to drop that hack
> altogether.
>
> Working with such locally-changed versions can be easier if you try
> cabal-devel tool or similar.
>
> But I think might consider another solution: don't use that library. As HDBC
> docs<http://hackage.haskell.org/packages/archive/HDBC/2.2.6.1/doc/html/Database-HDBC.html>says:
>
> ODBC Available from http://software.complete.org/hdbc-odbc. Or, to
> partitipace in development, use git clone git://git.complete.org/hdbc-odbc
> MySQL MySQL users have two choices: the first is the ODBC driver, which
> works and has been tested against MySQL on both Linux/Unix and Windows
> platforms. There is also an *alpha-quality* native MySQL driver available
> for download at
> http://hackage.haskell.org/cgi-bin/hackage-scripts/package/HDBC-mysql with
> a homepage at http://www.maubi.net/~waterson/hacks/hdbc-mysql.html.
>
> So clearly, HDBC developer(s?) think that HDBC-odbc is the way.
>
>
> Best regards,
> Krzysztof Skrz?tnicki
>
> On Sat, Apr 2, 2011 at 00:46, Alexey G <kreed...@gmail.com> wrote:
>
>> Hello. I have some trouble with HDBC-mysql package (
>> http://hackage.haskell.org/package/HDBC-mysql).
>> It depends on base (<4), but in GHC 7 - base 4.3.1.
>> I download a HDBC-mysql package and change dependence in .cabal file to
>> base (<5). It works fine.
>> But I want to build another package that depend on HDBC-mysql and cabal
>> check dependencies from the hackage, where is HDBC-mysql depend on base
>> (<4).
>>
>> What I should do?
>>
>> _______________________________________________
>> Beginners mailing list
>> Beginners@haskell.org
>> http://www.haskell.org/mailman/listinfo/beginners
>>
>>
>
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