anchor.diff:      gdk-pixbuf
       glib
       glib-networking
  +    gcr
       gnome-bluetooth
       gnome-desktop
       gnome-online-accounts
       gnome-remote-desktop # optional, sharing panel
       gnome-settings-daemon
       gnome-user-share # optional, sharing panel
  -    grilo
  -    grilo-plugins # for setting wallpaper from Flickr
       gsettings-desktop-schemas
       gsound
       gtk3
  
positive.code: , gnome-online-accounts
  , gnome-settings-daemon
  , gnome
  , grilo
  , grilo-plugins
  , gsettings-desktop-schemas
  , gsound
  , gtk3
  
negative.code: { fetchurl
  , lib
  , stdenv
  , substituteAll
  