[Haskell-cafe] confusion with fgl and ghc6

[David Bremner]

I don't know whether this is a bug in fgl, in ghc, or I'm just confused.
Any ideas? This is on debian/sid.


GHCi, version 6.8.2: http://www.haskell.org/ghc/  :? for help
Loading package base ... linking ... done.
Prelude> import Data.Graph.Inductive.Example
Prelude Data.Graph.Inductive.Example> star 6

<interactive>:1:0:
    Ambiguous type variable `gr' in the constraint:
      `Data.Graph.Inductive.Graph.Graph gr'
        arising from a use of `star' at <interactive>:1:0-5
    Probable fix: add a type signature that fixes these type variable(s)
Prelude Data.Graph.Inductive.Example>