NIXPKG1 http://nixos.org/releases/nixpkgs/nixpkgs-0.12/MANIFEST bison-2.3 i686-linux /nix/store/2c7jfm7n9rjvx38fcai72ga3j8zz6qc9-bison-2.3.drv /nix/store/v9v81981r00r1ix4ay0jdhssh4mxlhmr-bison-2.3