anchor.diff:      "--enable-library"
       "--enable-cups"
       "--enable-pie"
  +    "--enable-external-ell"
       "--with-dbusconfdir=${placeholder "out"}/share"
       "--with-dbussystembusdir=${placeholder "out"}/share/dbus-1/system-services"
       "--with-dbussessionbusdir=${placeholder "out"}/share/dbus-1/services"
  
positive.code: , fetchurl
  , alsa-lib
  , dbus
  , glib
  , json_c
  , libical
  
negative.code:   buildInputs = [
      alsa-lib
      dbus
      ell
      glib
      json_c
      libical
  