DPH (desugarer) causes GHC compilation to fail

When trying to build current head, we get the following error:

"inplace/bin/ghc-stage2"   -H32m -O    -package-name dph-seq-0.5 -hide-all-packages -i -ilibraries/dph/dph-seq/../dph-common -ilibraries/dph/dph-seq/dist-install/build -ilibraries/dph/dph-seq/dist-install/build/autogen -Ilibraries/dph/dph-seq/dist-install/build -Ilibraries/dph/dph-seq/dist-install/build/autogen -Ilibraries/dph/dph-seq/.    -optP-include -optPlibraries/dph/dph-seq/dist-install/build/autogen/cabal_macros.h -package array-0.3.0.2 -package base-4.3.1.0 -package dph-base-0.5 -package dph-prim-seq-0.5 -package ghc-7.1.20110209 -package ghc-prim-0.2.0.0 -package random-1.0.0.3 -package template-haskell-2.5.0.0  -Odph -funbox-strict-fields -fcpr-off -fdph-this -package-name dph-seq -XHaskell98 -XTypeFamilies -XGADTs -XRankNTypes -XBangPatterns -XMagicHash -XUnboxedTuples -XTypeOperators -O2 -XGenerics -no-user-package-conf -rtsopts     -odir libraries/dph/dph-seq/dist-install/build -hidir libraries/dph/dph-seq/dist-install/build -stubdir libraries/dph/dph-seq/dist-install/build -hisuf hi -osuf  o -hcsuf hc -c libraries/dph/dph-seq/../dph-common/Data/Array/Parallel.hs -o libraries/dph/dph-seq/dist-install/build/Data/Array/Parallel.o
GHC error in desugarer lookup in dph-seq:Data.Array.Parallel:
  Can't find interface-file declaration for variable GHC.PArr.emptyP
    Probable cause: bug in .hi-boot file, or inconsistent .hi file
    Use -ddump-if-trace to get an idea of which file caused the error
ghc-stage2: panic! (the 'impossible' happened)
  (GHC version 7.1.20110209 for i386-unknown-linux):
        initDs IOEnv failure

This bug has been confirmed and reproduced on at least 3 completly different machines (mac, linux and windows platforms, different versions of ghc/gcc etc.).

Trac metadata

Trac field	Value
Version	7.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Data Parallel Haskell
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