NIXPKG1 http://nixos.org/releases/nixpkgs/nixpkgs-0.12/MANIFEST xchm-1.9 x86_64-linux /nix/store/3p6rrcamqrjiqxyig19p418gflsycrli-xchm-1.9.drv /nix/store/2j3cyzmk69wrqzjvamwiprqx39cn1wfa-xchm-1.9