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Today's Topics:
1. -fglasgow-exts in .cabal (Imants Cekusins)
2. Re: -fglasgow-exts in .cabal
(Sumit Sahrawat, Maths & Computing, IIT (BHU))
3. Re: -fglasgow-exts in .cabal (Imants Cekusins)
4. Re: -fglasgow-exts in .cabal
(Sumit Sahrawat, Maths & Computing, IIT (BHU))
5. Re: -fglasgow-exts in .cabal (Imants Cekusins)
6. cabal install snap-server-0.9.5.1: At least the following
dependencies are missing: attoparsec >=0.10 && <0.13 &&
==0.13.0.1 (Stanislaw Findeisen)
----------------------------------------------------------------------
Message: 1
Date: Thu, 9 Jul 2015 16:32:52 +0200
From: Imants Cekusins <[email protected]>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Subject: [Haskell-beginners] -fglasgow-exts in .cabal
Message-ID:
<CAP1qinZUS9k85UhxzU=-_n3drjpt4yxoxilpsp0vyjrc_-n...@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
How to specify defaultExtensions in cabal (1.22) file?
e.g.
-fglasgow-exts or
TypeSynonymInstances
?
------------------------------
Message: 2
Date: Thu, 9 Jul 2015 21:05:43 +0530
From: "Sumit Sahrawat, Maths & Computing, IIT (BHU)"
<[email protected]>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Subject: Re: [Haskell-beginners] -fglasgow-exts in .cabal
Message-ID:
<CAJbEW8Oxmfeznum76=OdYt=Q=e8+oyspd4ryrvnxyn5km3y...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
https://www.haskell.org/cabal/users-guide/developing-packages.html might
help.
On 9 July 2015 at 20:02, Imants Cekusins <[email protected]> wrote:
> How to specify defaultExtensions in cabal (1.22) file?
>
> e.g.
> -fglasgow-exts or
> TypeSynonymInstances
>
> ?
> _______________________________________________
> Beginners mailing list
> [email protected]
> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
>
--
Regards
Sumit Sahrawat
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Message: 3
Date: Thu, 9 Jul 2015 18:02:34 +0200
From: Imants Cekusins <[email protected]>
To: [email protected], The Haskell-Beginners Mailing
List - Discussion of primarily beginner-level topics related to
Haskell <[email protected]>
Subject: Re: [Haskell-beginners] -fglasgow-exts in .cabal
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Thank you Sumit.
This is how far I got:
if I put this right after hs-source-dirs:
default-extensions: FlexibleInstances
, it works: ghc asks for MultiParamTypeClasses option.
However if I add FlexibleInstances, MultiParamTypeClasses
- either separated with comma or on the next line, the compiler parses
.cabal and tries to build however prompts for FlexibleInstances again.
How would I specify >1 option?
------------------------------
Message: 4
Date: Thu, 9 Jul 2015 21:34:51 +0530
From: "Sumit Sahrawat, Maths & Computing, IIT (BHU)"
<[email protected]>
To: Imants Cekusins <[email protected]>
Cc: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Subject: Re: [Haskell-beginners] -fglasgow-exts in .cabal
Message-ID:
<CAJbEW8Me1UW1YqmcMNVW0KM=hhfum+2_onddegbxqw-iws1...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
I used to take a look at cabal files from projects that I've used and found
to work. For example, IHaskell uses a lot of extensions [1].
[1]:
https://github.com/gibiansky/IHaskell/blob/master/ihaskell.cabal#L122-L126
On 9 July 2015 at 21:32, Imants Cekusins <[email protected]> wrote:
> Thank you Sumit.
>
> This is how far I got:
>
> if I put this right after hs-source-dirs:
>
> default-extensions: FlexibleInstances
>
> , it works: ghc asks for MultiParamTypeClasses option.
>
> However if I add FlexibleInstances, MultiParamTypeClasses
> - either separated with comma or on the next line, the compiler parses
> .cabal and tries to build however prompts for FlexibleInstances again.
>
> How would I specify >1 option?
>
--
Regards
Sumit Sahrawat
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Message: 5
Date: Thu, 9 Jul 2015 18:18:13 +0200
From: Imants Cekusins <[email protected]>
To: [email protected]
Cc: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Subject: Re: [Haskell-beginners] -fglasgow-exts in .cabal
Message-ID:
<CAP1qinaZoD=w1ka4ov5y2qjjx59vd-s9+mq+ethhk2vuynx...@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
Cheers Sumit. it worked:
default-extensions: FlexibleInstances
MultiParamTypeClasses
TypeSynonymInstances
needed to run cabal clean, then cabal build.
this needs to be specified in both library & test-suite spec section
hope this helps someone.
------------------------------
Message: 6
Date: Fri, 10 Jul 2015 13:49:24 +0200
From: Stanislaw Findeisen <[email protected]>
To: [email protected]
Subject: [Haskell-beginners] cabal install snap-server-0.9.5.1: At
least the following dependencies are missing: attoparsec >=0.10 &&
<0.13 && ==0.13.0.1
Message-ID: <[email protected]>
Content-Type: text/plain; charset="utf-8"
Hi
Could anyone explain this to me, please?
$ cabal install snap-server-0.9.5.1
Resolving dependencies...
Configuring snap-server-0.9.5.1...
cabal: At least the following dependencies are missing:
attoparsec >=0.10 && <0.13 && ==0.13.0.1
cabal: Error: some packages failed to install:
snap-server-0.9.5.1 failed during the configure step. The exception was:
ExitFailure 1
Where does this unsatisfiable dependency come from? snap-server-0.9.5.1
seems to require just attoparsec (>=0.10 && <0.14):
http://hackage.haskell.org/package/snap-server-0.9.5.1 . And attoparsec
0.13.0.1 is already installed:
$ cabal list --installed attoparsec
* attoparsec
Synopsis: Fast combinator parsing for bytestrings and text
Default available version: 0.13.0.1
Installed versions: 0.13.0.1
Homepage: https://github.com/bos/attoparsec
License: BSD3
* attoparsec-enumerator
Synopsis: Pass input from an enumerator to an Attoparsec parser.
Default available version: 0.3.4
Installed versions: 0.3.4
Homepage: https://john-millikin.com/software/attoparsec-enumerator/
License: MIT
I am trying to install hakyll 4.6.*, and snap-server seems to be one of
the requirements. Hakyll 4.6.* is an old version but AFAIR I need that
due to conflicting versions of containers.
Thanks!
--
http://people.eisenbits.com/~stf/
http://www.eisenbits.com/
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