[Haskell-cafe] On Haskell IDEs

[Michal Antkiewicz]

Cabal repl is absolutely great! Are there any reasons why it couldn't
provide all information that ghc-mod and hdevtools do? It could be run as a
background process, right? It knows about sandboxes as well.

That would be a great SoC project - extend cabal repls to subsume ghc-mod
and hdevtools.

Michal


On Mon, Mar 10, 2014 at 4:59 PM, Andrey Chudnov <achudnov at gmail.com> wrote:

>  While I do not condone Mr. Verdi's verbal bashing of the efforts of the
> Haskell community to provide development tools, I do feel his pain. There
> is quite a bit of divided effort which seems to result in having multiple
> inferior solutions.
>
> My all-time favorite is ghc-mod because "it just works", but it can be
> very slow for large projects, especially involving template-haskell (and
> there are no easy fixes for that).
>
> HDevTools, in theory, is great: a persistent server, allowing incremental
> builds/checks etc., but it's oblivious to .cabal files, let alone
> sandboxes, which makes it completely impractical for any degree of serious
> Haskell development (on that note, how come pull request 30 [1] is still
> open?! /rant).
>
> Finally, GHCi is supposed to be enough for IDE support in editors.
> However, as I understand it, the problem is that its output is not easily
> parsed and, hence, consumed by editors; on top of that, using it with
> .cabal files and sandboxes requires calling 'cabal repl', so using another
> tool.
>
> So, maybe, GHCi could be augmented with an easily consumed output format
> (like JSON), and 'cabal' be given support for that mode as well? Since it's
> that time of the year again (I mean, the GSoC proposal time :)), maybe,
> someone would look into this idea?
>
> [1] https://github.com/bitc/hdevtools/pull/30
>
> /Andrey
>
>
> On 03/10/2014 03:44 PM, Vagif Verdi wrote:
>
> Sorry, i meant ghci not cabal.
>
> As for hsdev, in order to provide its features it will have to load and
> keep track of entire project information which is already done by ghc-mod
> and hdevtools separately. So you  ushould see how much effort is wasted on
> doing the same thing again and again in each of 4 different tools (ghci,
> ghc-mod, hdevtools and hsdev)
>
> On Monday, March 10, 2014 12:32:25 PM UTC-7, Niklas Hambüchen wrote:
>>
>> On 10/03/14 18:41, Vagif Verdi wrote:
>> > This is an excellent illustration of how fragmentation in this specific
>> > area hurts community. Not only you are forced to use 3 different tools
>> > (ghc-mod, hdevtools, cabal) each of which basically provides the same
>> > service but in an incompatible and incomplete way. But you decided to
>> > create yet another one instead of contributing to the ones you already
>> > use (they are all open source)
>>
>> I'm not sure what you mean to say; ghc-mod and cabal certainly do not do
>> the same. Hsdev doesn't either, and claiming that we don't contribute to
>> these projects is strange.
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<mantkiew at gsd.uwaterloo.ca>
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