GHC 8.0 Migration Guide & Ubuntu GHC8/cabal packages (was: [ANNOUNCE] Glasgow Haskell Compiler 8.0.1, release candidate 1)

[Herbert Valerio Riedel]

On 2016-01-13 at 16:43:35 +0100, Ben Gamari wrote:
> The GHC Team is very pleased to announce the first release candidate of
> the Glasgow Haskell Compiler 8.0.1 release. Source and binary
> distributions as well as the newly revised users guide can be found at
>
>     http://downloads.haskell.org/~ghc/8.0.1-rc1/
>
> This is the first in a series of release candidates which will allow us
> to get wider testing of the significant changes that have occurred since
> the 7.10 series. [...]

As this wasn't explicitly mentioned in the announce, I'd like to point
your attention to

 https://ghc.haskell.org/trac/ghc/wiki/Migration/8.0

which would benefit greatly from early adopters. More importantly, this
helps us all to reduce the boring & redundant investigative work of
rediscovering the same migration techniques by multiple parties over and
over again... :-)

----

I'd also like to remind you that (more or less) daily snapshots of GHC 8.0.1 for
Ubuntu {Precise,Trusty,Vivid,Wily} are already available via

  https://github.com/hvr/multi-ghc-travis

This also includes a "cabal-install-1.24" package (which currently
contains the current latest devel snapshots of cabal-install soon to
become version 1.24)

This specifically allows you to integrate GHC 8.0.1 & cabal-install 1.24
into your test-matrices in the `travis.yml` files, and thereby help
detect GHC 8.0 & Cabal 1.2[34] issues early on. The new packages have
been whitelisted for containerised Travis jobs already.

Cheers,
  hvr