[Haskell-cafe] Package conflicts using cabal-dev

Daniel Fischer daniel.is.fischer at googlemail.com
Wed Jan 30 23:40:20 CET 2013

On Wednesday 30 January 2013, 22:29:23, Arnaud Bailly wrote:

    Couldn't match expected type `Data.Text.Lazy.Internal.Text'
                with actual type `text-'

one package (at least) you use - probably graphviz - was compiled with a 
version of `text` that is not the newest you have installed.

GHC selects the newest installed version of a package by default, cabal and 
cabal-dev select the version that the other used packages require.

Add a -package text- flag to the command line.

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