NIXPKG1 http://nixos.org/releases/nixpkgs/nixpkgs-0.12/MANIFEST postgresql-8.3.0 x86_64-linux /nix/store/qma3wj5jbba2c9xx5h9fppz82q0cql58-postgresql-8.3.0.drv /nix/store/5nhcccxbqz9d3sb7yganyzx4rw6nvkgr-postgresql-8.3.0