Hello,
I am running into a strange issue that reminds me of Java's classloader
black magic havoc :-)
My code compiles fine using cabal-dev install, but when I try to compile an
individual file with ghc, I got the following error:
$ ghc -package-conf cabal-dev/packages-7.4.1.conf YakGraph.hs
[1 of 1] Compiling YakGraph ( YakGraph.hs, YakGraph.o )
YakGraph.hs:13:30:
Couldn't match expected type `Data.Text.Lazy.Internal.Text'
with actual type
`text-0.11.2.0:Data.Text.Lazy.Internal.Text'
In the first argument of `unpack', namely `s'
In the expression: unpack s
In an equation for `fromGraphId': fromGraphId (Str s) = unpack s
YakGraph.hs:24:57:
Couldn't match expected type `Data.Text.Lazy.Internal.Text'
with actual type
`text-0.11.2.0:Data.Text.Lazy.Internal.Text'
In the first argument of `unpack', namely `name'
In the expression: unpack name
In a case alternative: (Just (Str name)) : _ -> unpack name
The code leading to this error is here: https://gist.github.com/4677191
Any insights on this would be appreciated.
Arnaud
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