Changes to GHC that will expose new packages

Magnus Therning magnus at
Thu Mar 22 20:52:00 GMT 2012

On Wed, Mar 21, 2012 at 10:47:45AM -0700, David Terei wrote:
> Hi all,
> We are currently contemplating some changes to GHC that will
> unfortunately mean we'll need to include these packages: haskeline,
> mtl, terminfo & utf8-string. We wanted to check what the
> implications for the haskell platform were and if you had any
> advice.
> The reason for this is that we want to expose an API for ghci. ghci
> relies on haskeline and through that mtl, terminfo & utf8-string.
> Previously ghci was just built as a binary with no library
> component, so its dependencies didn't matter.

AFAIU this would also impact all people packaging haskell, whether
they use HP or not.  Including these packages in GHC will most likely
mean that improvements to these packages only become available to end
users when new versions of GHC arrive.  I'm not sure how quickly these
packages move, but I think that would be an unfortunate situation

How tight is the tie between ghc and ghci, would it be possible to
separate ghci and ghc?


Magnus Therning                      OpenPGP: 0xAB4DFBA4 
email: magnus at   jabber: magnus at
twitter: magthe     

I invented the term Object-Oriented, and I can tell you I did not have
C++ in mind.
     -- Alan Kay
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