Drastic Prelude changes imminent

[Erik Hesselink]

What does that mean exactly? It sounds a bit like RebindableSyntax,
but I don't see it working that way. With NoImplicitPrelude, I can
locally define things like 'fromInteger' or '>>', but they are not
used in desugaring numeric literals or do notation.

Erik

On Tue, Jan 27, 2015 at 12:26 PM, Augustsson, Lennart
<Lennart.Augustsson at sc.com> wrote:
> That's very different since it changes how desugaring works.
> With NoImplicitPrelude desugaring uses unqualified names.  It's a rather fragile pragma.
>
> -----Original Message-----
> From: Erik Hesselink [mailto:hesselink at gmail.com]
> Sent: 27 January 2015 11:11
> To: Augustsson, Lennart
> Cc: libraries at haskell.org
> Subject: Re: Drastic Prelude changes imminent
>
> On Tue, Jan 27, 2015 at 11:32 AM, Augustsson, Lennart <Lennart.Augustsson at sc.com> wrote:
>> *    Add a new pragma
>>         {-# LANGUAGE Prelude=AlternativePrelude #-}
>>       *   Semantics is name-space only: import Prelude (); import
>> AlternativePrelude
>
> I don't have any opinion on the full proposal yet, but I usually use "{-# LANGUAGE NoImplicitPrelude #-}" when using an alternate prelude.
> Is there any different between that and "import Prelude ()"?
>
> Erik
>
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