Proposal: Let OpenGL depend on the StateVar package

[Alp Mestanogullari]

+1, both packages need it and should really just be using the same
implementation. Otherwise we'll just end up with conflicts when using sdl2
*and* OpenGL or we'll be juggling between two statevars implementations
imported qualified that really are the same thing.

On Wed, Oct 22, 2014 at 7:30 PM, Edward Kmett <ekmett at gmail.com> wrote:

> We're currently actively working on writing better SDL 2 bindings in sdl2.
>
> For various reasons, it can't depend on the OpenGL package directly, but
> it needs a state variable construction.
>
> Sadly, not every platform with SDL 2 has OpenGL -- thanks Microsoft.
>
> We'd like to depend on the StateVar package, but then we'll get two
> versions of the notion of a StateVar that conflict.
>
> By *far* the cleanest option for us moving forward would be if OpenGL switched
> to using the externalStateVar package that you also maintain, then we
> could incur a dependency on that.
>
> I realize that when this was last proposed there was some pushback from
> the Haskell Platform, but otherwise what we're going to start seeing is a
> profusion of almost-compatible APIs, which is the very thing that the
> Haskell Platform is meant to prevent.
>
>
> This would necessitate adding StateVar to the Haskell Platform, as OpenGL
> is in the Haskell Platform.
>
>
> The package is maintained by the same maintainer as the current OpenGL
> package.
>
>
> Discussion Period: 2 weeks
>
>
> -Edward Kmett
>
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-- 
Alp Mestanogullari
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