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