Aha!  A palpable bug.   Now fixed in the CVS repository.

Thanks for reporting it.   You should not need the
'import Eval' now.  Nor do you need -fno-prune-tydecls (ever again).


Simon

> -----Original Message-----
> From: Kevin Atkinson 
> Sent: Thursday, July 01, 1999 5:44 PM
> To: Simon Peyton-Jones
> Cc: 'GHC bugs'
> Subject: Re: CVS Version of GHC has problems finding Instances
> 
> 
> Simon Peyton-Jones wrote:
> > 
> > Kevin
> > 
> > Simon has built your library with the current GHC and it's happy.
> > So at the moment we can't reproduce your problem.
> 
> Is it happy when you comment out the "import Eval" in Main.hs?
> 
> >  Have you still
> > got it? (After doing your cvs update.)
> 
> Updated tuesday morning.
> 
> After I commenting out import Eval:
> 
> Main.hs:63:
>     No instance for `Monad Eval.Eval'
>         arising from use of `elems' at Main.hs:63
> 
> ghc-4.02 does not have this problem.  Nor does hugs.
> 
> > 
> > Simon
> > 
> > > -----Original Message-----
> > > From: Kevin Atkinson
> > > Sent: Monday, June 28, 1999 8:10 AM
> > > To: [EMAIL PROTECTED]
> > > Subject: CVS Version of GHC has problems finding Instances
> > >
> > >
> > > It seams that the CVS version of ghc (June 27) has 
> problems finding
> > > instances.   See the attached file Main.hs in a message I 
> just sent to
> > > the Haskell mailing list with a subject of "Second 
> attempt for an STL
> > > like library for Haskell".  If I don't import Eval it 
> complains of not
> > > being able to find an instance of Monad for Eval.Eval.
> > >
> > > If this is not a known problem I have some additional 
> examples I can
> > > provide.  Just let me known.
> > > --
> > > Kevin Atkinson
> > > [EMAIL PROTECTED]
> > > http://metalab.unc.edu/kevina/
> > >
> 
> -- 
> Kevin Atkinson
> [EMAIL PROTECTED]
> http://metalab.unc.edu/kevina/
> 

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