Haskell 2010: libraries

Mathias Stearn redbeard0531 at gmail.com
Wed Jul 15 12:03:49 EDT 2009

Would it be possible for the language to require that implementations
support linking multiple versions of packages (at least base and
haskell-std) into a single running instance? That would solve the
issue of using two libs that depend on different versions.

On Wed, Jul 15, 2009 at 10:54 AM, Ian Lynagh<igloo at earth.li> 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.
> Thanks
> Ian
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