HEADS-UP: diagrams does not compile with HEAD (regressions)

[Simon Peyton Jones]

I'm doing that now

| -----Original Message-----
| From: ghc-devs [mailto:ghc-devs-bounces at haskell.org] On Behalf Of Jan
| Stolarek
| Sent: 10 June 2014 17:16
| To: ghc-devs at haskell.org
| Subject: Re: HEADS-UP: diagrams does not compile with HEAD (regressions)
| 
| Reid is correct. This is a result of fixing #8883. I agree that printing
| the inferred signature
| sounds like a good idea.
| 
| Janek
| 
| Dnia wtorek, 10 czerwca 2014, Reid Barton napisał:
| > I expect this is a result of
| https://ghc.haskell.org/trac/ghc/ticket/8883,
| > but even so it's not clear to me whether the error is correct. It would
| be
| > nice if GHC printed the type it inferred for succ' in this kind of
| > situation.
| >
| > Regards,
| > Reid Barton
| >
| > On Tue, Jun 10, 2014 at 7:55 AM, Gabor Greif <ggreif at gmail.com> wrote:
| > > Devs,
| > >
| > > as of recently GHC HEAD stopped building the diagrams library.
| Several
| > > prerequisite libs also fail to compile. A specific error message
| > > appears in an attoparsec issue
| > > <https://github.com/bos/attoparsec/issues/67>, for which I have
| > > submitted a workaround. But as Herbert cautiously points out, this
| > > could be a recent GHC bug surfacing.
| > >
| > > The symptoms of the bug seem to be that GHC complains about the usage
| > > of (~) type equality operation, but there is no reference to that
| type
| > > operator in the source code. To work around the problem it suffices
| to
| > > add -XGADTs or -XTypeFamilies.
| > >
| > > Does this ring any bells? Can automatized tests catch such things in
| the
| > > future?
| > >
| > > Cheers,
| > >
| > >     Gabor
| > > _______________________________________________
| > > ghc-devs mailing list
| > > ghc-devs at haskell.org
| > > http://www.haskell.org/mailman/listinfo/ghc-devs
| 
| 
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