anchor.diff:  , pkgconfig
   , cups, zlib, libjpeg, libusb1, python3Packages, sane-backends
   , dbus, file, ghostscript, usbutils
  -, net-snmp, openssl, perl, nettools
  +, net-snmp, openssl, perl, nettools, avahi
   , bash, coreutils, util-linux
   # To remove references to gcc-unwrapped
   , removeReferencesTo, qt5
  
positive.code:     openssl
      perl
      zlib
    ];
  
    nativeBuildInputs = [
  
negative.code:   || throw "HPLIP plugin not supported on ${stdenv.hostPlatform.system}";
  
  python3Packages.buildPythonApplication {
    inherit pname version src;
    format = "other";
  
    buildInputs = [
  