FW: Building ghc on Windows with msys2

Simon Peyton Jones simonpj at microsoft.com
Thu Oct 9 07:45:25 UTC 2014

Cabal folk: it looks as if updating Cabal has made GHC on Windows break.  Might you investigate?

See below



-----Original Message-----
From: ghc-devs [mailto:ghc-devs-bounces at haskell.org] On Behalf Of Páli Gábor János
Sent: 09 October 2014 06:15
To: ghc-devs at haskell.org
Subject: Re: Building ghc on Windows with msys2

2014-10-07 17:02 GMT+02:00 Páli Gábor János <pali.gabor at gmail.com>:
> 2014-10-07 15:04 GMT+02:00 cg <chengang31 at gmail.com>:
>> I guess the current two build server are all Cygwin based, they are 
>> failing at the same permission issue at early building stage, it 
>> prevents checking out the real problem. It seems msys2 (or msys)  
>> seldom has such issue.
> For what it is worth, I have been witnessing those permission issues 
> with msys2 on my Windows builders.  They worked (more or the less) 
> fine until September 24, but suddenly, something has changed (not on 
> my side) and all I got those errors since.

Looks like the commit with the Cabal submodule update causes this [1].
The revision before that commit still builds fine on my system, while everything else after that commit dies early at build [2].  Is this only me, has anybody else experienced the problem?  Perhaps I am doing something wrong?  I do not remember to see any related "heads-up"
message on the list, like I should update any of the build-time dependencies.

[1] http://git.haskell.org/ghc.git/commit/4b648be19c75e6c6a8e6f9f93fa12c7a4176f0ae
[2] http://haskell.inf.elte.hu/builders/windows-x86-head/56/10.html
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