| The commented out signature is the signature that GHC infers for the
| function. When I uncomment that signature, it will no longer type
| check. Why does this happen? Even with the forall and the explicit
| signatures in the where clause, it chokes.
This very question is one that came up only yesterday
http://hackage.haskell.org/trac/ghc/ticket/1050
Could you boil out a small example? A good way to shrink code is to replace a
function that is not playing a significant role with an error call: replace
f :: <type>
f = <big rhs>
with
f :: <type>
f = error "urk"
Usually that lets you get a small example. But if you can't, just send the
whole thing
Simon
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