ghc: panic! (the 'impossible' happened) [Cant do annotations without GHCi]

The Haskell Platform instructed me to report this as a bug. :)

I'm trying to install The Haskell Platform on my Samsung Chromebook, using the wheezy chroot (armv7l GNU/Linux).

Actually, I'm trying to install Elm. I've installed the Platform.

Installing Elm via cabal install Elm-0.13 elm-repl-0.3 elm-reactor-0.1 elm-get-0.1.3 , I eventually encounter:

[ 3 of 19] Compiling Data.Vector.Fusion.Stream.Size ( Data/Vector/Fusion/Stream/Size.hs, dist/build/Data/Vector/Fusion/Stream/Size.o )

Data/Vector/Fusion/Stream/Size.hs:25:10:

Warning: No explicit method nor default method for *' In the instance declaration for Num Size'

Data/Vector/Fusion/Stream/Size.hs:25:10:

Warning: No explicit method nor default method for abs' In the instance declaration for Num Size'

Data/Vector/Fusion/Stream/Size.hs:25:10:

Warning: No explicit method nor default method for signum' In the instance declaration for Num Size'

[ 4 of 19] Compiling Data.Vector.Internal.Check ( Data/Vector/Internal/Check.hs, dist/build/Data/Vector/Internal/Check.o ) [ 5 of 19] Compiling Data.Vector.Fusion.Stream.Monadic ( Data/Vector/Fusion/Stream/Monadic.hs, dist/build/Data/Vector/Fusion/Stream/Monadic.o ) ghc: panic! (the 'impossible' happened)

(GHC version 7.4.1 for arm-unknown-linux):

Cant do annotations without GHCi

{Data/Vector/Fusion/Stream/Monadic.hs:104:19-33}

base:GHC.Exts.ForceSpecConstr{d raqj}

Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug

Trac metadata

Trac field	Value
Version	7.4.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
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