anchor.diff:      grilo-plugins
       gnome-online-accounts
       libmediaart
  -    tracker_2
  +    tracker
       gfbgraph
       json-glib
       librest
       dleyna-server
  +  ];
  +
  +  NIX_CFLAGS_COMPILE = [
  +    "-Wno-error=format-security" # https://gitlab.gnome.org/GNOME/gnome-online-miners/merge_requests/3/diffs#note_942747
     ];
   
     enableParallelBuilding = true;
  
positive.code: { stdenv
  , fetchurl
  , pkg-config
  , glib
  , gnome3
  
negative.code: , grilo-plugins
  , gnome-online-accounts
  , libmediaart
  , tracker
  , gfbgraph
  , librest
  , libsoup
  