[Haskell-cafe] Announcement: Beta of Leksah IDE available

[jutaro]

Hello Jeff,
I'm not so shure if I understand what you mean (and I'm off for vacations in
a few minute).
So lets find out later. But you may try to set the --user to your config
flags in 
menu: Packages/Edit Flags.

Jürgen


Jeff Heard wrote:
> 
> Jurgen...  I have one more question, or rather request... I'm running
> under Ubuntu, and I get inconsistencies with packages that I build and
> install via Leksah not showing up when I configure other packages that
> depend on them.  Then I notice that you're using runhaskell Setup.lhs
> ... to configure build and install.   I wonder if you could change all
> that from "runhaskell Setup.lhs" to "cabal" wherever you run it?
> That would make things a lot more consistent overall, and probably
> jive better with the way most people install packages.
> 
> -- Jeff
> 
> On Thu, Apr 2, 2009 at 8:27 AM, jutaro <jnf at arcor.de> wrote:
>>
>> Hi Simon,
>> you quite nicely describe what leksah is doing already. Try to find find
>> the
>> source code for all installed packages by locating cabal files, parse the
>> module sources via the Ghc API (actually not so much the API), using info
>> from cabal files for this (which is a dark art). It extracts comments and
>> locations. It's quite an ad hoc solution. On my machine it's 97%
>> successful,
>> but its a notorious support theme, because it depends so much on the
>> environment.
>> Jürgen
>>
>>
>> Simon Marlow-7 wrote:
>>>
>>> David Waern wrote:
>>>> 2009/4/2 Duncan Coutts <duncan.coutts at worc.ox.ac.uk>:
>>>>> On Wed, 2009-04-01 at 22:13 +0200, David Waern wrote:
>>>>>> 2009/4/1 jutaro <jnf at arcor.de>:
>>>>>>> I guess you mean the dialog which should help leksah to find sources
>>>>>>> for installed packages. It needs this so you can go to all the
>>>>>>> definitions
>>>>>>> in the base packages ... This is very handy if it works. Look to the
>>>>>>> manual
>>>>>>> for details.
>>>>>> Maybe could add support to Cabal for installing sources? Should be
>>>>>> very useful to have in general.
>>>>> http://hackage.haskell.org/trac/hackage/ticket/364
>>>>
>>>> Jutaru, perhaps a nice Hackathon project? :-)
>>>
>>> I think there's some design work to do there.  See the discussion on the
>>> GHC ticket: http://hackage.haskell.org/trac/ghc/ticket/2630.
>>>
>>> In short: just keeping the source code around isn't enough.  You need
>>> some
>>> metadata in order to make sense of the source code - for example, you
>>> can't
>>> feed the source code to the GHC API without knowing which additional
>>> flags
>>> need to be passed, and those come from the .cabal file.  Also you
>>> probably
>>> want to stash the results of the 'cabal configure' step so that you can
>>> get
>>> a view of the source code that is consistent with the version(s?) you
>>> compiled.  We need to think about about backwards and
>>> forwards-compatibility of whatever metadata format is used.
>>>
>>> And then you'll need Cabal APIs to extract the metadata.  So we need to
>>> think about what APIs make sense, and the best way to do that is to
>>> think
>>> about what tool(s) you want to write and use that to drive the API
>>> design.
>>>
>>> Perhaps all this is going a bit too far.  Maybe we want to just stash
>>> the
>>> source code and accept that there are some things that you just can't do
>>> with it.  However, I imagine that pretty soon people will want to feed
>>> the
>>> source code into the GHC API, and at that point we have to tackle the
>>> build
>>> metadata issues.
>>>
>>> Cheers,
>>>       Simon
>>> _______________________________________________
>>> Haskell-Cafe mailing list
>>> Haskell-Cafe at haskell.org
>>> http://www.haskell.org/mailman/listinfo/haskell-cafe
>>>
>>>
>>
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