*** setup configure

Configuring vector-space-0.3...
Dependency base-any: using base-3.0.2.0
Dependency MemoTrie-any: using MemoTrie-0.1
Using compiler: ghc-6.8.3
Using install prefix: /usr/local/tmp/archive/install
Binaries installed in: /usr/local/tmp/archive/install/bin
Libraries installed in:
/usr/local/tmp/archive/install/lib/vector-space-0.3/ghc-6.8.3
Private binaries installed in: /usr/local/tmp/archive/install/libexec
Data files installed in: /usr/local/tmp/archive/install/share/vector-space-0.3
Documentation installed in:
/usr/local/tmp/archive/install/share/doc/vector-space-0.3
Using alex version 2.2 found on system at: /usr/bin/alex
Using ar found on system at: /usr/bin/ar
Using c2hs version 0.15.1 found on system at: /usr/local/bin/c2hs
Using cpphs version 0.7 found on system at: /usr/bin/cpphs
Using ffihugs found on system at: /usr/local/bin/ffihugs
Using ghc version 6.8.3 found on system at: /usr/local/bin/ghc
Using ghc-pkg version 6.8.3 found on system at: /usr/local/bin/ghc-pkg
No greencard found
Using haddock version 2.3.0 found on system at: /usr/local/bin/haddock
Using happy version 1.17 found on system at: /usr/local/bin/happy
No hmake found
Using hsc2hs version 0.66-ghc found on system at: /usr/local/bin/hsc2hs
Using hscolour version 1.9 found on system at: /usr/local/bin/HsColour
Using hugs found on system at: /usr/local/bin/hugs
No jhc found
Using ld found on system at: /usr/bin/ld
No nhc98 found
Using pkg-config version 0.22 found on system at: /usr/bin/pkg-config
Using ranlib found on system at: /usr/bin/ranlib
Using strip found on system at: /usr/bin/strip
Using tar found on system at: /bin/tar

*** setup build

Creating dist/build (and its parents)
Creating dist/build/autogen (and its parents)
Preprocessing library vector-space-0.3...
Building vector-space-0.3...
Building library...
Creating dist/build (and its parents)
/usr/local/bin/ghc -package-name vector-space-0.3 --make -hide-all-packages -i -idist/build/autogen -idist/build -isrc -Idist/build -odir dist/build -hidir dist/build -stubdir dist/build -package base-3.0.2.0 -package MemoTrie-0.1 -O -Wall -O2 Data.AdditiveGroup Data.VectorSpace Data.Basis Data.LinearMap Data.Maclaurin Data.Derivative Data.Cross Data.AffineSpace Data.NumInstances
[1 of 9] Compiling Data.NumInstances ( src/Data/NumInstances.hs, dist/build/Data/NumInstances.o )
[2 of 9] Compiling Data.AdditiveGroup ( src/Data/AdditiveGroup.hs, dist/build/Data/AdditiveGroup.o )
[3 of 9] Compiling Data.VectorSpace ( src/Data/VectorSpace.hs, dist/build/Data/VectorSpace.o )
[4 of 9] Compiling Data.Basis       ( src/Data/Basis.hs, dist/build/Data/Basis.o )
[5 of 9] Compiling Data.LinearMap   ( src/Data/LinearMap.hs, dist/build/Data/LinearMap.o )
[6 of 9] Compiling Data.Maclaurin   ( src/Data/Maclaurin.hs, dist/build/Data/Maclaurin.o )
[7 of 9] Compiling Data.Derivative  ( src/Data/Derivative.hs, dist/build/Data/Derivative.o )
[8 of 9] Compiling Data.Cross       ( src/Data/Cross.hs, dist/build/Data/Cross.o )

src/Data/Cross.hs:1:0:
    Couldn't match expected type `()' against inferred type `Basis s'

src/Data/Cross.hs:69:24:
    Could not deduce (HasTrie (Basis s))
      from the context (Basis s ~ (),
                        HasNormal (Two (One s :> s)),
                        Num s,
                        VectorSpace s s,
                        HasBasis s s,
                        HasTrie (Basis s))
      arising from a use of `normalVec' at src/Data/Cross.hs:69:24-32
    Possible fix:
      add (HasTrie (Basis s)) to the context of
        the type signature for `normalVec'
      or add an instance declaration for (HasTrie (Basis s))
    In the first argument of `(.)', namely `normalVec'
    In the second argument of `(.)', namely `normalVec . pairD'
    In the expression: unpairD . normalVec . pairD