Re: patch applied (packages/base): IsString is GHC-only (so why is it in the Prelude?)

Malcolm Wallace <[email protected]> Wed, 24 Jan 2007 10:51:09 +0000

Newsgroups	gmane.comp.lang.haskell.cvs.all
Organization	Dept of Computer Science, University of York
Message-ID	<20070124105109.18db9bcd.Malcolm.Wallace__30240.4013848447$1169636164$gmane$org@cs.york.ac.uk>

Duncan Coutts <[email protected]> wrote:

> > Tue Jan 23 10:30:07 PST 2007  Ross Paterson <[email protected]>
> >   * IsString is GHC-only (so why is it in the Prelude?)
> 
> Yes, can we please have a discussion about what's going on here.
> Changes to the base library are supposed to go via the libraries
> review process. I'm not complaining that we slipped up, I just want to
> make sure people can have a chance to comment.

I agree that this development is strange.  The Prelude module in base is
supposed to export exactly and only the Haskell'98-specified Prelude.
There should be no proposed extensions in there, especially if they are
compiler-specific.  There are lots of other places an extension can
live, e.g. GHC.Base

[ Actually, to be honest I'm not quite sure why the Prelude module lives
  in the base package, rather than the haskell98 package?  The same
  question applies to the Numeric module. ]

Regards,
    Malcolm