anchor.diff:      gnused
       gnutar
       highlight
  +    htop
  +    mosh
  +    # TODO: p7zip
       rlwrap
       silver-searcher
  +    # FIXME: sshfs-fuse
  +    sloccount
       tree
  +    wakatime # FIXME: update to 6.2.
  +    watchman
   
       # Virtualization
       # FIXME: xhyve
  
positive.code:     nix-repl
  
      # Shell
      fish
  
      # SML
  
negative.code: 
      # Tools
      autojump
      automake
      awscli
      coreutils
      # TODO: csvprintf (create package)
  