anchor.diff:      gnupg
       gnused
       gnutar
  -    # FIXME: graphviz
  +    # TODO: graphviz
       gzip
       httpie
       htop
  
positive.code:     nix-prefetch-git
      noweb
      pandoc
      # TODO: pup
      ripgrep
      shellcheck
      shfmt
  
negative.code:   ])) ++ lib.optionals stdenv.isLinux [
      # git-cola
      # keybase-gui
      # TODO: libreoffice
      qpdfview
      playerctl
      psmisc
  