New official language extension tokens for GHC 7.8.1

[Simon Peyton-Jones]

| Which of the language extensions listed in `expectedGhcOnlyExtensions`
| in
| 
| 
| http://ghc.haskell.org/trac/ghc/browser/testsuite/tests/driver/T4437.hs#
| L33
| 
| are deemed ready for public consumption in GHC 7.8.1,

Good question.  Here's the list with my comments. We need input from Ian. on 

RelaxedLayout
AlternativeLayoutRule
AlternativeLayoutRuleTransitional
  I have no idea about these three.


AllowAmbiguousTypes
  Yes

ExplicitNamespaces
  Yes (allows you to say 'type (+)' in import/export lists)

TypeHoles
  Yes

OverloadedLists
  Yes

EmptyCase
  Yes

AutoDeriveTypeable
  Yes

NegativeLiterals
  Yes

NullaryTypeClasses
  Yes

Simon


| -----Original Message-----
| From: ghc-devs [mailto:ghc-devs-bounces at haskell.org] On Behalf Of
| Herbert Valerio Riedel
| Sent: 31 August 2013 07:13
| To: ghc-devs
| Subject: New official language extension tokens for GHC 7.8.1
| 
| Hello GHC Devs,
| 
| Which of the language extensions listed in `expectedGhcOnlyExtensions`
| in
| 
| 
| http://ghc.haskell.org/trac/ghc/browser/testsuite/tests/driver/T4437.hs#
| L33
| 
| are deemed ready for public consumption in GHC 7.8.1, and can be
| registered with upstream Cabal now (maybe even for the upcoming 1.18.0
| release)?
| 
| Related: http://ghc.haskell.org/trac/ghc/ticket/8176
| 
| Cheers,
|   hvr
| 
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