NIXPKG1 http://nixos.org/releases/nixpkgs/nixpkgs-0.12/MANIFEST gcc-4.3.1 i686-linux /nix/store/wcansi2n5cqb3106vl5vkjjd2x1wjfsm-gcc-4.3.1.drv /nix/store/xszlglc6s5mnamnmjjc1all22y9s0fg5-gcc-4.3.1