See http://hydra.nixos.org/build/776455. gcc43_multi is used by stdenv_32bit (the stdenv capable of building both 32-bit and 64-bit binaries on x86_64-linux). Note that it would be fine to update stdenv_32bit to use GCC 4.5, maybe that will fix the problem.

Submitted by Eelco Dolstra on 6 December 2010 at 15:30