anchor.diff:      nix-repl
   
       # Shell
  +    bash
       fish
   
       # SML
  
positive.code:     gnused
      gnutar
      highlight
      rlwrap
      silver-searcher
      tree
  
      # Virtualization
      # FIXME: xhyve
  
negative.code: 
      # Tools
      autojump
      automake
      awscli
      coreutils
      # TODO: csvprintf (create package)
  