ghc-6.12.1rc1 on Nix: ghci does not work

After building the ghc-6.12.1 release candidate on a 32-bit Arch Linux machine using Nix, ghci fails to start with the following error:

GHCi, version 6.12.0.20091010: http://www.haskell.org/ghc/  :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer-gmp ... linking ... done.
Loading package base ... linking ... done.
ghc-stage2: /nix/store/nkg79yilgrdcfpkrfvr15jrg2v49svrn-ghc-6.12.0.20091010/lib/ghc-6.12.0.20091010/HSffi.o: no string tables, or too many
Loading package ffi-1.0 ... ghc-stage2: panic! (the 'impossible' happened)
  (GHC version 6.12.0.20091010 for i386-unknown-linux):
	loadObj: failed

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

I know that I encountered this problem before when trying to build the HEAD a couple of months before, but I didn't ever have this problem with ghc-6.10.* using Nix.

Any ideas?

Trac metadata

Trac field	Value
Version	6.11
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
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