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@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
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