Re: Drastic Prelude changes imminent

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 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@gmail.com] Sent: 27 January 2015 11:11 To: Augustsson, Lennart Cc: libraries@haskell.org Subject: Re: Drastic Prelude changes imminent

On Tue, Jan 27, 2015 at 11:32 AM, Augustsson, Lennart 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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