self: super: {
  dockerTools = super.callPackage ./default.nix { go = self.go_1_9; };
  # glusterfs = super.glusterfs.overrideAttrs (old: {
    # buildInputs = old.buildInputs ++ [ self.lvm2 ];
    # });
  # super.config.services.kubernetes = super.callPackage ./overlay/kubernetes.nix {};
}