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

Herbert Valerio Riedel hvriedel at
Thu Jan 14 12:52:17 UTC 2016

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
> 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

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

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.


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