ANNOUNCE: ghci-ng package

Simon Peyton-Jones simonpj at
Wed Jul 24 04:52:44 CEST 2013

Herbert, it certainly sounds like a good thing to me.


|  -----Original Message-----
|  From: Glasgow-haskell-users [mailto:glasgow-haskell-users-bounces at]
|  On Behalf Of Herbert Valerio Riedel
|  Sent: 20 July 2013 10:42
|  To: glasgow-haskell-users at
|  Subject: ANNOUNCE: ghci-ng package
|  Hello GHC HQ,
|  I wanted to inform you that I created the `ghci-ng` package
|  which essentially is the ghc/* folder from the GHC source-tree with a
|  ghci-ng.cabal file put in place (and some dummy .h files) to make the
|  interactive-mode GHC front-end compilable w/o requiring the full GHC
|  source-tree.
|  The reason I created ghci-ng was to be able to backport features from
|  GHC HEAD so that Haskell user not living on the bleeding edge (such as
|  Haskell Platform users) don't have to wait for half a year or so till
|  they can use new features[1]. On the other hand, this might also allow
|  to expose new work-in-progress features to users in production
|  environments to play with before those features find their way into a
|  final GHC release, and thus help with developing new GHCi features in a
|  more "agile" way by getting feedback from potential users earlier.
|  So ghci-ng is *not* supposed to replace ghci, but rather provide an
|  testing ground for evaluating new/experimental features which may get
|  merged into upstream GHCi eventually if they prove useful.
|  Please let me know what you think of this.
|   [1]: The killer-feature right now being the new `:complete` command
|        which allows the latest (unreleased) haskell-mode to provide
|        REPL-completion from within the Emacs buffer.
|  Cheers,
|    hvr
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