This reverts commit10addad603, reversing changes made to7786575c6c. NixOS scripts should be kept in the NixOS source tree, not in pkgs. Moving them around is just confusing and creates unnecessary code/history churn.
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at http://nixos.org/nixos and in the manual in doc/manual.