The main output started to retain dependency on bootstrap-tools; see https://github.com/NixOS/nixpkgs/pull/15867#issuecomment-227949096 This reverts commitc05d829598, reversing changes made tof073df60d6.
*** 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.