HP 2015.2.0.0 and GHC 7.10

[Mark Lentczner]

I've gone ahead and built a very provisional, alpha version of 2015.2.0.0
using GHC 7.10 RC3.

I bumped all the GHC libs to the versions in 7.10, and bumped all the
Platform libs to the latest versions I could find on Hackage. There were a
few issues:

   - *old-locale and old-time* - no longer part of GHC, but cabal-install,
   cgi & HTTP need them - and they are part of the platform - so included now
   as added packages. Not sure this is a great idea, since they are now very
   deprecated... but until cabal-install, cgi, & HTTP update, not sure what
   else to do.
   - *tf-random* - is now required by alex and QuickCheck - seems a shame
   to add this, as now we're going to have two random packages
   - *network-uri *- was split out of network, and needed by cabal-install,
   cgi, & HTTP. I suppose we should include it, as it was functionality and
   API that was part of the platform
   - *exceptions* & *multipart* - needed by cgi - is exceptions now
   subsumed by something in transformers? and... multipart? maybe time to drop
   cgi? We didn't have it last time anyway as it wouldn't compile!
   - *scientific* - needed by attoparsec - debated in detail last time ...
   and we're still here!

The Platform is significantly larger now: On OS X it has gone from 316M to
499M! Most of this is due to new OpenGL libs which are now huge (went from
98M to 239M!) GHC itself grew by 109M (to almost 1G), so that the whole
installed magilla is 1.5G! Even the compressed installer is now 250M!

If you want to poke at it, the source is in the pre-release branch at GitHub
<https://github.com/haskell/haskell-platform/tree/pre-release>, and the OS
X builds are at my usual platform staging area:

Index of /mark/platform <http://www.ozonehouse.com/mark/platform/>


Remember, it already includes GHC, so no need to download the GHC binary
for OS X that is there, too.

I'll try to get a generic linux build up soonish... but my VM now runs out
of memory trying to build OpenGL - and adding more only makes my machine
thrash to death!

- Mark
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