Known problems with promoted tuples and lists in GHC 7.4.1?

José Pedro Magalhães jpm at
Wed Jun 6 23:43:01 CEST 2012

Hi David,

Are you using HEAD? If so, and you run into problems, please report them
(either here or as bugs in trac).


On Wed, Jun 6, 2012 at 9:37 PM, David Menendez <dave at> wrote:

> Are there any known issues involving type-level pairs and lists? I've
> hit a few baffling type errors that went away when I refactored my
> code to use locally-defined pairs and lists instead of those provided
> by the prelude.
> More worryingly, I had one function that would stop passing the type
> checker if I replaced '[n] with (n ': '[]) in its signature.
> --
> Dave Menendez <dave at>
> <>
> _______________________________________________
> Glasgow-haskell-users mailing list
> Glasgow-haskell-users at
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