[Haskell-cafe] aeson-0.6.1.0 deriveJSON error

[jims at stuttard.org]

ghc doesn't seem to be unifying deriveJSON (String->String)
parameter with id :: a -> a.

examples/TemplateHaskell.hs:22:14:
     Couldn't match expected type `Data.Aeson.TH.Options'
                 with actual type `a0 -> a0'
     In the first argument of `deriveJSON', namely `id'
     In the expression: deriveJSON id ''Coord
ghc --make: /usr/hs/ghc/7.4.1/bin/ghc failure (return code=1)


ghc-7.4.1 x86_64
Centos-6

[jim at localhost aeson]$ ghc-pkg list  
--package-conf=../cabal-dev/packages-7.4.1.conf
../cabal-dev/packages-7.4.1.conf
    HTTP-4000.2.6
    aeson-0.6.1.0
    attoparsec-0.10.3.0
    attoparsec-conduit-0.5.0.3
    base-unicode-symbols-0.2.2.4
    blaze-builder-0.3.1.0
    blaze-builder-conduit-0.5.0.3
    case-insensitive-0.4.0.4
    conduit-0.5.6
    dlist-0.5
    hashable-1.2.0.5
    http-types-0.7.3.0.1
    lifted-base-0.2.0.2
    monad-control-0.3.1.4
    nats-0.1
    network-2.4.1.0
    network-conduit-0.6.2.2
    parsec-3.1.3
    primitive-0.5.0.1
    resourcet-0.4.4
    semigroups-0.9
    simple-sendfile-0.2.10
    transformers-base-0.4.1
    unix-compat-0.4.1.0
    unordered-containers-0.2.3.0
    vault-0.2.0.4
    vector-0.10.0.1
    void-0.5.11
    wai-1.3.0.1
    warp-1.3.7.1