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Today's Topics:
1. Alfred Programs in Haskell (Richard Guay)
2. Google Summer of Code (Michael Jones)
3. Re: LTS is good but... (emacstheviking)
4. Re: LTS is good but... (Michael Snoyman)
----------------------------------------------------------------------
Message: 1
Date: Wed, 04 Mar 2015 12:38:24 +0700
From: Richard Guay <[email protected]>
To: [email protected]
Subject: [Haskell-beginners] Alfred Programs in Haskell
Message-ID: <[email protected]>
Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"
Hi,
I am using Haskell to write Alfred programs, but I have run into an
issue I just can not fix. The routine for reading a data file in a
application specific location for Alfred never detects the file as
non-existant. It then dies on the read. Here is the code:
getAlfredCacheFileContents :: String -> IO (String)
getAlfredCacheFileContents fileName = do
h <- getHomeDirectory
fExist <- doesFileExist $ h ++ cacheDirBasic ++ getBundleID ++ "/"
++ fileName
if fExist
then do
contents <- readFile $ h ++ cacheDirBasic ++ getBundleID ++ "/"
++ fileName
return contents
else
return ""
I just installed the latest version on my Mac Air. It always does the
call to readFile, even when the file doesn't exist.
--
Sent with Postbox <http://www.getpostbox.com>
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Message: 2
Date: Tue, 3 Mar 2015 23:50:43 -0700
From: Michael Jones <[email protected]>
To: [email protected]
Subject: [Haskell-beginners] Google Summer of Code
Message-ID: <[email protected]>
Content-Type: text/plain; charset=us-ascii
If any students are interested in Google Summer of Code projects, there is a
Minnow Board project here:
http://elinux.org/Minnowboard:GSoC2015
There is a Haskell project listed in the SMBus/PMBus section.
Mike
------------------------------
Message: 3
Date: Wed, 4 Mar 2015 08:39:56 +0000
From: emacstheviking <[email protected]>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Subject: Re: [Haskell-beginners] LTS is good but...
Message-ID:
<CAEiEuULQzspFZ76nYy1hx+eVObw=a3koj201avkm2ogcptx...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
As requested,
iMac:~ vosabristol$ ghc --version
The Glorious Glasgow Haskell Compilation System, version 7.8.3
which ghc
/opt/local/bin/ghc
Hmm.... it shows a macports instsallation of GHC... but I am sure that's
how I git it... I *used* to use the OSX installation package but I thought
a clean start using MacPorts would somehow change the mood...
iMac:~ vosabristol$ cabal --version
cabal-install version 1.16.0.2
using version 1.16.0 of the Cabal library
iMac:~ vosabristol$ which cabal
/usr/bin/cabal
So... there is a possible case for *once again* performing a complete and
utter removal of Haskell and its partners in crime and doing a fresh
installation?
Out of frustration I built OCaml and OPAM from sources last night but I'd
still like to go with GHC!
:)
On 3 March 2015 at 20:43, Michael Snoyman <[email protected]> wrote:
> Funny that there's an issue being discussed in the cabal issue tracker
> right now[1] similar to this. But the report you're giving here is
> particularly strange. Cabal-1.16 implies that you're using GHC 7.6, which
> is supported by the claim that base 4.7 isn't available. I'd recommend
> starting off with running the following commands and pasting the output:
>
> ghc --version
> which ghc
> cabal --version
> which cabal
>
> [1] https://github.com/haskell/cabal/issues/2438
>
> On Tue, Mar 3, 2015 at 10:21 PM emacstheviking <[email protected]> wrote:
>
>> Forgot to add that somehow, despite the upgrade, my cabal version has
>> gone backwards from 1.20.0.1 to 1.16.0
>>
>> WTF?
>>
>>
>> On 3 March 2015 at 20:19, emacstheviking <[email protected]> wrote:
>>
>>> I started an OpenGL project within an LTS sandbox as guided on another
>>> post and, somewhat foolishly it would see, I did a "cabal install
>>> cabal-install" when prompted that a new version was available.
>>>
>>> The very next time I tried to work on my code.... I got this:
>>>
>>> bash-3.2$ pwd
>>> /Users/seancharles/Documents/Coding/haskell/lts1
>>> bash-3.2$ cabal build
>>> cabal: You need to re-run the 'configure' command. The version of Cabal
>>> being
>>> used has changed (was Cabal-1.20.0.1, now Cabal-1.16.0).
>>> bash-3.2$ cabal configure
>>> Resolving dependencies...
>>> Configuring lts1-0.1.0.0...
>>> cabal: At least the following dependencies are missing:
>>> base ==4.7.*
>>> bash-3.2$ cabal build
>>> cabal: You need to re-run the 'configure' command. The version of Cabal
>>> being
>>> used has changed (was Cabal-1.20.0.1, now Cabal-1.16.0).
>>> bash-3.2$ ls -l
>>> total 112
>>> -rw-r--r-- 1 seancharles staff 19 Mar 2 12:53 LICENCSE
>>> -rw-r--r-- 1 seancharles staff 552 Mar 3 20:09 Main.hs
>>> -rw-r--r-- 1 seancharles staff 477 Mar 3 20:07 Main.hs~
>>> -rw-r--r-- 1 seancharles staff 46 Mar 2 12:52 Setup.hs
>>> -rw-r--r-- 1 seancharles staff 30198 Mar 2 12:51 cabal.config
>>> -rw-r--r-- 1 seancharles staff 1090 Mar 2 12:51 cabal.sandbox.config
>>> drwxr-xr-x 5 seancharles staff 170 Mar 2 12:53 dist
>>> -rw-r--r-- 1 seancharles staff 1932 Mar 2 12:52 lts1.cabal
>>> bash-3.2$
>>>
>>> So, welcome to a different kind of hell, "cabal version hell" perhaps?
>>>
>>> Can anybody help me get it running again?
>>> Thanks.
>>> Sean.
>>>
>>>
>> _______________________________________________
>> Beginners mailing list
>> [email protected]
>> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
>>
>
> _______________________________________________
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> [email protected]
> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
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Message: 4
Date: Wed, 04 Mar 2015 09:13:41 +0000
From: Michael Snoyman <[email protected]>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Subject: Re: [Haskell-beginners] LTS is good but...
Message-ID:
<caka2jglfcuyvthv-53bx1vc7pafwubfnw6qmhe4qlosx2no...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
I can't really explain the details of what's going on here. It seems that
in some cases different versions of the executables are being found, but I
don't know why. Wiping out your sandbox (cabal sandbox delete) and starting
over may be sufficient to recover.
On Wed, Mar 4, 2015 at 11:11 AM emacstheviking <[email protected]> wrote:
> As requested,
>
> iMac:~ vosabristol$ ghc --version
> The Glorious Glasgow Haskell Compilation System, version 7.8.3
>
> which ghc
> /opt/local/bin/ghc
>
> Hmm.... it shows a macports instsallation of GHC... but I am sure that's
> how I git it... I *used* to use the OSX installation package but I thought
> a clean start using MacPorts would somehow change the mood...
>
> iMac:~ vosabristol$ cabal --version
> cabal-install version 1.16.0.2
> using version 1.16.0 of the Cabal library
>
> iMac:~ vosabristol$ which cabal
> /usr/bin/cabal
>
> So... there is a possible case for *once again* performing a complete and
> utter removal of Haskell and its partners in crime and doing a fresh
> installation?
>
>
> Out of frustration I built OCaml and OPAM from sources last night but I'd
> still like to go with GHC!
>
> :)
>
>
> On 3 March 2015 at 20:43, Michael Snoyman <[email protected]> wrote:
>
>> Funny that there's an issue being discussed in the cabal issue tracker
>> right now[1] similar to this. But the report you're giving here is
>> particularly strange. Cabal-1.16 implies that you're using GHC 7.6, which
>> is supported by the claim that base 4.7 isn't available. I'd recommend
>> starting off with running the following commands and pasting the output:
>>
>> ghc --version
>> which ghc
>> cabal --version
>> which cabal
>>
>> [1] https://github.com/haskell/cabal/issues/2438
>>
>> On Tue, Mar 3, 2015 at 10:21 PM emacstheviking <[email protected]> wrote:
>>
>>> Forgot to add that somehow, despite the upgrade, my cabal version has
>>> gone backwards from 1.20.0.1 to 1.16.0
>>>
>>> WTF?
>>>
>>>
>>> On 3 March 2015 at 20:19, emacstheviking <[email protected]> wrote:
>>>
>>>> I started an OpenGL project within an LTS sandbox as guided on another
>>>> post and, somewhat foolishly it would see, I did a "cabal install
>>>> cabal-install" when prompted that a new version was available.
>>>>
>>>> The very next time I tried to work on my code.... I got this:
>>>>
>>>> bash-3.2$ pwd
>>>> /Users/seancharles/Documents/Coding/haskell/lts1
>>>> bash-3.2$ cabal build
>>>> cabal: You need to re-run the 'configure' command. The version of Cabal
>>>> being
>>>> used has changed (was Cabal-1.20.0.1, now Cabal-1.16.0).
>>>> bash-3.2$ cabal configure
>>>> Resolving dependencies...
>>>> Configuring lts1-0.1.0.0...
>>>> cabal: At least the following dependencies are missing:
>>>> base ==4.7.*
>>>> bash-3.2$ cabal build
>>>> cabal: You need to re-run the 'configure' command. The version of Cabal
>>>> being
>>>> used has changed (was Cabal-1.20.0.1, now Cabal-1.16.0).
>>>> bash-3.2$ ls -l
>>>> total 112
>>>> -rw-r--r-- 1 seancharles staff 19 Mar 2 12:53 LICENCSE
>>>> -rw-r--r-- 1 seancharles staff 552 Mar 3 20:09 Main.hs
>>>> -rw-r--r-- 1 seancharles staff 477 Mar 3 20:07 Main.hs~
>>>> -rw-r--r-- 1 seancharles staff 46 Mar 2 12:52 Setup.hs
>>>> -rw-r--r-- 1 seancharles staff 30198 Mar 2 12:51 cabal.config
>>>> -rw-r--r-- 1 seancharles staff 1090 Mar 2 12:51
>>>> cabal.sandbox.config
>>>> drwxr-xr-x 5 seancharles staff 170 Mar 2 12:53 dist
>>>> -rw-r--r-- 1 seancharles staff 1932 Mar 2 12:52 lts1.cabal
>>>> bash-3.2$
>>>>
>>>> So, welcome to a different kind of hell, "cabal version hell" perhaps?
>>>>
>>>> Can anybody help me get it running again?
>>>> Thanks.
>>>> Sean.
>>>>
>>>>
>>> _______________________________________________
>>> Beginners mailing list
>>> [email protected]
>>> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
>>>
>>
>> _______________________________________________
>> Beginners mailing list
>> [email protected]
>> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
>>
>>
> _______________________________________________
> Beginners mailing list
> [email protected]
> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
>
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