NIXPKG1 http://nixos.org/releases/nixpkgs/nixpkgs-0.12/MANIFEST tightvnc-1.3.10 x86_64-linux /nix/store/3qzwpck23ninhm5dwxxmlp8d1dg7k3fh-tightvnc-1.3.10.drv /nix/store/vf60x1dgs57gxycyh9jdcpfgbn3g29al-tightvnc-1.3.10