Copying to the `bugs' list:
On Fri, Dec 21, 2012 at 12:12:09PM +0000, Simon Peyton-Jones wrote: > sigh. i suppose I have to reproduce it. I have only docon2.12-pre, and I get > > make build > runghc Setup.hs build > Building docon-2.12... > Preprocessing library docon-2.12... > > on the commandline: Warning: > -no-user-package-conf is deprecated: Use -no-user-package-db instead > > DExport.hs:26:8: > Ambiguous module name `Prelude': > it was found in multiple packages: base haskell98-2.0.0.3 > make: *** [build] Error 1 > simonpj@cam-05-unx:~/tmp/docon-2.12-pre/docon/source$ > > > How to fix? http://botik.ru/pub/local/Mechveliani/ghcQuest/d212-pre-asBug.zip Please, try to compile this d212-pre-asBug -- as it is written there in install.txt. I do not know, may be, this docon2.12-pre is a smaller report, if this is essential, and if you still need docon2.12-pre, then you could change things in it according to the corresponding points in d212-pre-asBug. But I hoope d212-pre-asBug will do. The responsible module is Pol3_.hs. Regards, ------ Sergei > | -----Original Message----- > | From: Serge D. Mechveliani [mailto:mech...@botik.ru] > | Sent: 21 December 2012 11:48 > | To: Simon Peyton-Jones > | Cc: glasgow-haskell-bugs@haskell.org > | Subject: Re: DoCon and GHC > | > | On Fri, Dec 21, 2012 at 11:26:30AM +0000, Simon Peyton-Jones wrote: > | > I think you need to remove the 'forall a' on the type signature for > | dP'. > | > The 'a' you mean is the 'a' from the instance declaration, not a > | > completely fresh 'a'. > | > | This looks reasonable. > | > | > Moreover I don't think you need the 'forall' on the 'instance' > | declaration. > | > Just 'ScopedTypeVariables' should do it > | > | [..] > | -- Pol3_.hs ---------------------------------------------------- > | ... > | {-# LANGUAGE ScopedTypeVariables #-} -- (1) > | ** > | > | instance (LinSolvRing (Pol a), CommutativeRing a) => > | [..] _______________________________________________ Glasgow-haskell-bugs mailing list Glasgow-haskell-bugs@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
