[Haskell-cafe] Fw: patch applied (ghc): Remove the OpenGL familyof libraries fromextralibs

scodil sedillard at gmail.com
Mon Jul 28 23:42:55 EDT 2008

I'll chime in with a "me too". I use Haskell and OpenGL for prototyping
scientific visualization software, 3D models and such. Not that I think it
couldn't be used for production software, its just that I just don't produce
much :)

The library really is fantastic. I don't think it gets enough fanfare. The
other GL API that rivals it is the C API itself. Most other languages
provide a
shoddy & incomplete interface to that, instead of an idiomatic
interpretation of the OpenGL spec. I can't think of a single language, not
python, whose OpenGL bindings come close. 

I get the impression (from a inadequate sample of irc logs and list chatter)
that many Haskellers see HOpenGL as 'just an OpenGL binding', like it was
readline or curses or something. It just plugs a hole in the Haskell/OS
interface, and its worth is merely a function of the size and importance of
that hole. Instead I advocate, as Claus and others have done, that it's a
shining example of how to write a Haskell interface to a well known API.  

If you never used C OpenGL and learned GL using Haskell, you might not
anything special about it. But that's kind of my point, its just so damn
it blends into the background. The only people who notice this, I think, are
experienced C OpenGL programmers, and the overlap between them and the
community in general is small I bet. Their voice in that community smaller

This probably has little bearing on the issue of whether to keep or drop
HOpenGL in the near future, but I think that if 'the community' (or whoever
a say in these things) like the style of HOpenGL, and want to encourage
bindings to be written in that style, they should place the library
in the pantheon of Haskell libs. Demoting it has the opposite effect. 

Anyway, I just wanted to take advantage of a rare opportunity to sing its


> Yes, same here; don't worry, it's not going away.   It would be nice
> to know, though, how many people are using it and what they're using
> it for.  I'm using it for information visualization, and slowly
> evolving/cribbing together something like the Processing
> (http://www.processing.org) framework for Haskell as I do more things.
> On Sat, Jul 26, 2008 at 5:46 AM, Alberto Ruiz <aruiz at um.es> wrote:
>> Don Stewart wrote:
>>> claus.reinke:
>>>> But neither do I believe the rumour that OpenGL isn't much
>>>> used, and forwarding the removal notice gives those users the
>>>> opportunity to speak up now if they prefer no gaps in OpenGL presence,
>>>> or
>>>> forever to hold their peace, as they say.
>>> I for one have noticed this library *is* actively used. Many of the fun
>>> new games that have appeared are using it, in particular.
>>> Such as:
>>>    http://hackage.haskell.org/cgi-bin/hackage-scripts/package/frag
>>>    http://hackage.haskell.org/cgi-bin/hackage-scripts/package/Monadius
>>> http://hackage.haskell.org/cgi-bin/hackage-scripts/package/roguestar-gl
>>>    http://hackage.haskell.org/cgi-bin/hackage-scripts/package/rsagl
>>>    http://hackage.haskell.org/cgi-bin/hackage-scripts/package/Shu-thing
>>>    http://hackage.haskell.org/cgi-bin/hackage-scripts/package/topkata
>>> The tutorial was also translated to the wiki last week,
>>>    http://haskell.org/haskellwiki/Opengl
>>> It's a good, reliable package, in active use, widely ported.
>> I'd just like to say that HOpenGL is essential for me. It is one of the
>> reasons why I finally decided to use Haskell for all my work...
>> Alberto
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