portability and .cabal files?

[Ross Paterson]

On Fri, Nov 23, 2007 at 02:34:43AM +0000, Duncan Coutts wrote:
> On Fri, 2007-11-23 at 01:42 +0000, Ross Paterson wrote:
> > I guess you could indicate that a package won't build in some
> > configuration using the buildable field.  Hackage ought to learn
> > to use that too.
> 
> Oh you mean we should say:
> 
> if os(windows)
>   -- this package is known not to work on windows
>   buildable: false
> 
> and then cabal should fail on configuration, and cabal-install should
> not consider depending on that package in that configuration?

It's not ideal, because buildable is a per-component thing, but I think
Cabal already fails if none of the components is buildable.