There's a flag to turn it off, does that work? Try cabal install transformers-base -f-OrphanInstances
Sjoerd On May 9, 2013, at 2:47 PM, jean-christophe mincke <jeanchristophe.min...@gmail.com> wrote: > Hello Café > > I am running into problems when installing transformers-base-0.4.1. > > Has anyone an idea about what is going on? > > REM : this is a "brand new" debian install, I have just install ghc, cabal > install cabal-install etc. > > Thank you > > very much > > J-C > > cabal install transformers-base > Resolving dependencies... > Downloading transformers-base-0.4.1... > Configuring transformers-base-0.4.1... > Preprocessing library transformers-base-0.4.1... > Building transformers-base-0.4.1... > [1 of 1] Compiling Control.Monad.Base ( src/Control/Monad/Base.hs, > dist/build/Control/Monad/Base.o ) > > src/Control/Monad/Base.hs:63:10: > Duplicate instance declarations: > instance Applicative (L.ST s) > -- Defined at src/Control/Monad/Base.hs:63:10 > instance Applicative (L.ST s) -- Defined in `Control.Applicative' > > src/Control/Monad/Base.hs:67:10: > Duplicate instance declarations: > instance Applicative (S.ST s) > -- Defined at src/Control/Monad/Base.hs:67:10 > instance Applicative (S.ST s) -- Defined in `Control.Applicative' > cabal: Error: some packages failed to install: > transformers-base-0.4.1 failed during the building phase. The exception was: > ExitFailure 1 > _______________________________________________ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe
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