anchor.diff: -{ pkgs, config, ... }:
  -
  -let
  -  unstable = import (builtins.fetchGit {
  -    name = "nixos-unstable-2019-04-29";
  -    url = https://github.com/nixos/nixpkgs/;
  -    rev = "496f9309480b22173e25885bc7c128c30fbd4da3"; # emacs 26.2
  -  }) {
  -    config = config.nixpkgs.config;
  -  };
  -in
  +{ pkgs, ... }:
   
   {
     nixpkgs.config.allowUnfree = true;
  
positive.code:       vimAlias = true;
        viAlias = true;
      }))
      (unstable.emacs.override ({
        withGTK2 = false;
        withGTK3 = false;
      }))
      ag
      aria2
      bc
  
negative.code:     cmus
      curl
      daemonize
      emacs
      fd
      file
      fzf
  