Re: [ANNOUNCE] GHC 8.6.1-alpha2 available

2018-07-20 Thread Andrés Sicard-Ramírez 
On 15 July 2018 at 20:07, Ben Gamari  wrote:
>
> The GHC development team is pleased to announce the second alpha release
> leading up to GHC 8.6.1.

The following MVE uses the gitrev library (
http://hackage.haskell.org/package/gitrev ):

$ cat Test.hs

{-# LANGUAGE TemplateHaskell #-}

module Main where

import Development.GitRev

commitInfo :: Maybe String
commitInfo = case $(gitHash) of
  "UNKNOWN" -> Nothing
  hash  -> Just hash

main :: IO ()
main = print commitInfo


The MVE compiles *without* warnings with different versions of GHC
(e.g. 8.4.3) but with GHC 8.6.1-alpha2 I get the following warning:

$ ghc Test.hs

Test.hs:10:3: warning: [-Woverlapping-patterns]
Pattern match is redundant
In a case alternative: hash -> ...
   |
10 |   hash  -> Just hash
   |   ^^
Linking Test ...

Is it a bug or is it the expected behaviour?


Best,


-- 
Andrés
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Re: [ANNOUNCE] GHC 8.6.1-alpha2 available

2018-07-19 Thread Jens Petersen 
On 16 July 2018 at 10:07, Ben Gamari  wrote:
> The GHC development team is pleased to announce the second alpha release 
> leading up to GHC 8.6.1.

Thanks, I built it for Fedora and EPEL7 in my Copr repo:

https://copr.fedorainfracloud.org/coprs/petersen/ghc-8.6.1/

Jens
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[ANNOUNCE] GHC 8.6.1-alpha2 available

2018-07-15 Thread Ben Gamari 

The GHC development team is pleased to announce the second alpha release
leading up to GHC 8.6.1. The usual release artifacts are available from

https://downloads.haskell.org/~ghc/8.6.1-alpha2

This alpha fixes many of the bugs reported in the first alpha and
brings many of the core libraries to their (hopefully) final release
versions.

Unfortunately, the documentation troubles affecting the first alpha
haven't quite been resolved in this release. Consequently you will
again find there is no documentation uploaded. However, let us know if
anything else is amiss. Thanks for your help!

Cheers,

- Ben


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