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Today's Topics:
1. Re: can't install hackage package (Andres Loeh)
2. Re: Literate Haskell - capturing output (Brent Yorgey)
3. Re: Literate Haskell - capturing output (Kim-Ee Yeoh)
4. Re: can't install hackage package (Emmanuel Touzery)
5. Re: cabal install error: (Illegal instance declaration for
`StrictByteString String') (Brent Yorgey)
----------------------------------------------------------------------
Message: 1
Date: Mon, 21 Jan 2013 22:13:52 +0100
From: Andres Loeh <[email protected]>
Subject: Re: [Haskell-beginners] can't install hackage package
To: Emmanuel Touzery <[email protected]>
Cc: "[email protected]" <[email protected]>
Message-ID:
<caljd_v47rhhhyhn_gp5knov_rrnpcbggrv16t1eje0w0ud+...@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
> $ ghc-pkg list ghc
> /usr/lib64/ghc-7.4.1/package.conf.d
> /home/emmanuel/.ghc/x86_64-linux-7.4.1/package.conf.d
Aha. Is there something like a ghc-ghc package available on Fedora?
Perhaps you need a ghc-ghc-dev as well, I don't know. I'm somewhat
surprised that these aren't installed by default: strictly speaking,
the HP contains GHC itself, and installing the HP should install GHC
with all the core libraries.
Cabal is confused here because "ghc" is a package internal to GHC
which isn't available on Hackage, so if it's not installed together
with GHC, then Cabal has absolutely no info about it. Nevertheless, it
should quit with a meaningful message.
Cheers,
Andres
------------------------------
Message: 2
Date: Mon, 21 Jan 2013 16:18:31 -0500
From: Brent Yorgey <[email protected]>
Subject: Re: [Haskell-beginners] Literate Haskell - capturing output
To: [email protected]
Message-ID: <[email protected]>
Content-Type: text/plain; charset=us-ascii
On Thu, Jan 17, 2013 at 08:00:43PM +0100, Martin Drautzburg wrote:
> Hello all,
>
> I am using literate haskell quite a lot (otherwise I don't understand my own
> code). This works fine for the code as such. But when I give an example
> usage,
> I run code snippets in ghci and copy&paste into the main document/program,
> which turns them into "text" (and not code).
>
> When I make changes to the program these examples tend to no longer reflect
> the actual program.
>
> Is there a way to automatically run examples and include them in the .lhs
> file, preferably with the haskell prompt and everything?
This sounds nice but I don't know of any such thing. It shouldn't be
too bad to parse a literate Haskell file with haskell-src-exts,
process some of the literate comments, and then write it back out.
Unfortunately I do not know of a nice way to capture ghci output. You
can find an extremely hacky solution in BlogLiterately, much of which
was copied from the lhs2TeX source:
http://hub.darcs.net/byorgey/BlogLiterately/browse/src/Text/BlogLiterately/Ghci.hs
-Brent
------------------------------
Message: 3
Date: Tue, 22 Jan 2013 04:22:13 +0700
From: Kim-Ee Yeoh <[email protected]>
Subject: Re: [Haskell-beginners] Literate Haskell - capturing output
To: Brent Yorgey <[email protected]>
Cc: "[email protected]" <[email protected]>
Message-ID:
<capy+zdqnkdrsxtufoy5x9kcq+d-n-zjcfhdkja-efazfosn...@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
On Tue, Jan 22, 2013 at 4:18 AM, Brent Yorgey <[email protected]>wrote:
> Unfortunately I do not know of a nice way to capture ghci output.
Many of us use an emacs workflow (ghci inside an emacs shell) so output
automatically gets captured in a buffer.
-- Kim-Ee
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Message: 4
Date: Mon, 21 Jan 2013 22:25:56 +0100
From: Emmanuel Touzery <[email protected]>
Subject: Re: [Haskell-beginners] can't install hackage package
To: "[email protected]" <[email protected]>
Message-ID:
<cac42remum70uoxb_23yjprv0jp6ucgdlskijbhnrnxp9o0a...@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
bingo...
i had to install the "ghc-ghc" and "ghc-ghc-devel" packages (at first I
installed only "ghc-ghc" and that wasn't enough". Now it's building and I'm
pretty sure it will go through.
Thank God for this mailing list, I could never find this out on my own.
Thank you!
Emmanuel
On Mon, Jan 21, 2013 at 10:13 PM, Andres Loeh <[email protected]> wrote:
> > $ ghc-pkg list ghc
> > /usr/lib64/ghc-7.4.1/package.conf.d
> > /home/emmanuel/.ghc/x86_64-linux-7.4.1/package.conf.d
>
> Aha. Is there something like a ghc-ghc package available on Fedora?
> Perhaps you need a ghc-ghc-dev as well, I don't know. I'm somewhat
> surprised that these aren't installed by default: strictly speaking,
> the HP contains GHC itself, and installing the HP should install GHC
> with all the core libraries.
>
> Cabal is confused here because "ghc" is a package internal to GHC
> which isn't available on Hackage, so if it's not installed together
> with GHC, then Cabal has absolutely no info about it. Nevertheless, it
> should quit with a meaningful message.
>
> Cheers,
> Andres
>
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------------------------------
Message: 5
Date: Mon, 21 Jan 2013 16:26:13 -0500
From: Brent Yorgey <[email protected]>
Subject: Re: [Haskell-beginners] cabal install error: (Illegal
instance declaration for `StrictByteString String')
To: [email protected]
Message-ID: <[email protected]>
Content-Type: text/plain; charset=us-ascii
It looks like the bytestring-class package has not been updated in a
long time (since 2009) and does not compile under the latest versions
of GHC.
-Brent
On Mon, Jan 21, 2013 at 08:43:17PM +0100, miro wrote:
> Hi, please,....I'm trying to install one package
> (neo4j-haskell-http-client) and below is the error I'm getting. Pls.
> any ideas how can I fix that?
>
>
> ---------------
>
> 1 of 1] Compiling Data.ByteString.Class ( Data/ByteString/Class.hs,
> dist/build/Data/ByteString/Class.o )
>
> Data/ByteString/Class.hs:39:10:
> Illegal instance declaration for `StrictByteString String'
> (All instance types must be of the form (T a1 ... an)
> where a1 ... an are *distinct type variables*,
> and each type variable appears at most once in the instance head.
> Use -XFlexibleInstances if you want to disable this.)
> In the instance declaration for `StrictByteString String'
>
> Data/ByteString/Class.hs:55:10:
> Illegal instance declaration for `LazyByteString String'
> (All instance types must be of the form (T a1 ... an)
> where a1 ... an are *distinct type variables*,
> and each type variable appears at most once in the instance head.
> Use -XFlexibleInstances if you want to disable this.)
> In the instance declaration for `LazyByteString String'
> Updating documentation index /Users/miro/Library/Haskell/doc/index.html
> cabal: Error: some packages failed to install:
> bytestring-class-0.0.0 failed during the building phase. The exception was:
> ExitFailure 1
> neo4j-haskell-0.4.1 depends on bytestring-class-0.0.0 which failed to
> install.
>
> ---------------
>
> cheers,
> m.
> _______________________________________________
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