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

[Jan Stolarek]

No, there is no mention of it in the release notes. My bad. I'm putting it on my TODO list.

Janek

Dnia środa, 11 czerwca 2014, Gabor Greif napisał:
> Hello Jan,
>
> thanks for clarifying this! As it is biting various libraries, it
> would warrant to add some blurb into the release notes. Or does an
> entry exist already?
>
> Cheers,
>
>     Gabor
>
> On 6/10/14, Jan Stolarek <jan.stolarek at p.lodz.pl> wrote:
> > 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
> >> > _______________________________________________
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