Haskell 2010: libraries

Simon Marlow marlowsd at gmail.com
Thu Jul 16 04:36:56 EDT 2009

On 15/07/2009 18:10, David Menendez wrote:
> On Wed, Jul 15, 2009 at 11:33 AM, Simon Marlow<marlowsd at gmail.com>  wrote:
>> On 15/07/2009 15:54, Ian Lynagh wrote:
>>> On Wed, Jul 15, 2009 at 03:39:55PM +0100, Simon Marlow wrote:
>>>> But there's a solution: we could remove the "standard" modules from
>>>> base, and have them only provided by haskell-std (since base will just
>>>> be a re-exporting layer on top of base-internals, this will be easy to
>>>> do).  Most packages will then have dependencies that look like
>>>>    build-depends: base-4.*, haskell-std-2010
>>> We'll probably end up with situations where one dependency of a package
>>> needs haskell-std-2010, and another needs haskell-std-2011. I don't know
>>> which impls support that at the moment.
>> That's the case with base-3/base-4 at the moment.  Is it a problem?
> Could I use two packages of arrow code which depend on base 3.0.2 and
> base 3.0.3, respectively, in the same project?

No.  (though I'm not sure the significance of "arrow code" here).  Is 
there a package that depends on base-3.0.2, and doesn't work with 


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