RE: [ANNOUNCE] Shaking up GHC

23 Jan 2016

      Hi George,

I think you are hitting this bug: https://ghc.haskell.org/trac/ghc/ticket/11379.

Note, you don't have to use GHC HEAD as a bootstrapping compiler. I'm bootstrapping with GHC 7.10.1, for example.

Cheers,
Andrey

From: George Colpitts [mailto:george.colpitts@gmail.com]
Sent: 23 January 2016 13:36
To: Andrey Mokhov
Cc: dluposchainsky@googlemail.com; GHC developers
Subject: Re: [ANNOUNCE] Shaking up GHC

with ghc 8.0.0.20160111, cabal install shake fails with
[43 of 47] Compiling Development.Shake.Args ( src/Development/Shake/Args.hs, dist/build/Development/Shake/Args.o )

src/Development/Shake/Args.hs:1:1: error:
    solveWanteds: too many iterations (limit = 4)
      Unsolved: WC {wc_simple =
                      [D] _ :: Eq a (CDictCan)
                      [D] _ :: Ord a (CDictCan)
                      [D] _ :: Read a (CDictCan)
                      [D] _ :: Show a (CDictCan)
                      [W] hole{a4gTO} :: a ~ a (CNonCanonical)
                      [D] _ :: Eq a (CDictCan)}
      New superclasses found
      Set limit with -fconstraint-solver-iterations=n; n=0 for no limit

Is this a known problem?
Thanks

On Sat, Jan 23, 2016 at 9:05 AM, Andrey Mokhov mailto:andrey.mokhov@newcastle.ac.uk> wrote:
Thanks David!
...
Are there any plans as to how to include it in the GHC tree? Does it
ship with all the libraries required to build the build system, will we
have a mini-build system to bootstrap it? If I recall correctly, we rely
on Cabal sandboxes on Linux/OSX and global Cabal library
installations on Windows in order to run it.
The simplest way is to add the 'shake-build' folder to the GHC tree and
ask first adopters of the new build system to globally install the
dependencies (ansi-terminal, mtl, shake, QuickCheck). Then 'build.sh'
and 'build.bat' scripts should work.

I am open to suggestions on how to make this more convenient and
robust. I've never used anything more advanced than a global cabal
installation, so I'd appreciate input from more experienced users.

Could you create a ticket on github suggesting possible approaches?
I'm afraid our discussion may get lost in ghc-devs mailing list.

Many thanks!
Andrey
...
From: David Luposchainsky mailto:dluposchainsky@googlemail.com>
To: ghc-devs@haskell.orgmailto:ghc-devs@haskell.org
Subject: Re: [ANNOUNCE] Shaking up GHC
Message-ID: <56A27EB1.1080701@gmail.commailto:56A27EB1.1080701@gmail.com>
Content-Type: text/plain; charset=windows-1252
Great work Andrey!
I'm actually (pleasantly) surprised this is becoming part of the GHC
tree so soon
.
Are there any plans as to how to include it in the GHC tree? Does it
ship with
all the libraries required to build the build system, will we have a
mini-build
system to bootstrap it? If I recall correctly, we rely on Cabal
sandboxes on
Linux/OSX and global Cabal library installations on Windows in order to
run it.
Greetings,
David
_______________________________________________
ghc-devs mailing list
ghc-devs@haskell.orgmailto:ghc-devs@haskell.org
http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs