anchor.diff:      gtk3
       json-glib
       libcacard
  +    libcap_ng
       libdrm
       libjpeg_turbo
       libopus
  
positive.code: , python3
  , spice-protocol
  , usbredir
  , usbutils
  , vala
  , zlib
  , withPolkit ? true
  }:
  
negative.code: , gst_all_1
  , gtk-doc
  , gtk3
  , hwdata
  , json-glib
  , libcacard
  , libcap_ng
  , libdrm
  , libjpeg_turbo
  , libopus
  