haskell-vector version 0.7.0.1-1 failed to build on armel

[Ricardo Salveti]

haskell-vector version 0.7.0.1-1 failed to build on armel
Link to failed build: https://launchpad.net/ubuntu/+source/haskell-vector/0.7.0.1-1/+build/2467187

Direct link to the build log: https://launchpad.net/ubuntu/+source/haskell-vector/0.7.0.1-1/+build/2467187/+files/buildlog_ubuntu-oneiric-armel.haskell-vector_0.7.0.1-1_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 623 lines into the build log:

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-ghc/build/Data/Vector/Internal/Check.o )
[ 5 of 19] Compiling Data.Vector.Fusion.Stream.Monadic ( Data/Vector/Fusion/Stream/Monadic.hs, dist-ghc/build/Data/Vector/Fusion/Stream/Monadic.o )
ghc: panic! (the 'impossible' happened)
  (GHC version 7.0.3 for arm-unknown-linux):
 Cant do annotations without GHCi
    {103:19-33}
    base:GHC.Exts.ForceSpecConstr{d r1YN}

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

make: *** [build-ghc-stamp] Error 1
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20110516-1926
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/haskell-vector-0.7.0.1