NIXPKG1 http://nixos.org/releases/nixpkgs/nixpkgs-0.12/MANIFEST gcc-4.2.4 i686-linux /nix/store/rzjcig82nkwsa25cjmjhagkf8bkvm5bb-gcc-4.2.4.drv /nix/store/ylbjk3gsrbnbbcapx2rqhbjs40sw57c0-gcc-4.2.4