With every new GHC release, also released any new versions of libraries

Ian Lynagh igloo at earth.li
Thu Aug 25 14:33:53 CEST 2011

On Thu, Aug 25, 2011 at 01:36:13PM +0200, Johan Tibell wrote:
> On Thu, Aug 25, 2011 at 11:28 AM, Daniel Fischer
> <daniel.is.fischer at googlemail.com> wrote:
> > On Thursday 25 August 2011, 10:39:29, Johan Tibell wrote:
> >> P.S. Could someone please remind me why containers ships with GHC?
> >
> > Some other packages shipped with GHC depend on containers, e.g. hoopl,
> > template-haskell, haskeline, binary.
> So GHC uses some packages in its implementation, but that shouldn't
> have to mean that it also needs to export these. Is this a technical
> issue?

GHC needs to ship with anything that ghc-the-library transitively
depends on, yes.

> As a thought experiment lets consider what would happen if GHC would
> like to use unordered-containers in its implementation. Should GHC now
> be making releases to unordered-containers? That doesn't sound like a
> good thing.

There are certainly disadvantages to making GHC use a library. yes. We
have to weigh them up against the advantages we get from using the


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