anchor.diff:      "--enable-compat-libdns_sd"
       "--enable-compat-howl"
       "--with-distro=none"
  -    (wtFlag "xml" (expat != null) "expat")
  +    "--${boolWt (expat != null)}-xml"
       #"--with-avahi-group=<user>"
       #"--with-avahi-group=<group>"
       #"--with-autoipd-user=<user>"
  
positive.code:   configureFlags = [
      "--localstatedir=/var"
      "--enable-nls"
      (enFlag "glib" (glib != null) null)
      (enFlag "gobject" (glib != null) null)
      # Disable all builtin interfaces
      "--disable-qt3"
      "--disable-qt4"
      "--disable-gtk"
      "--disable-gtk3"
      (enFlag "dbus" (dbus != null) null)
      "--disable-dbm"
      "--disable-gdbm"
      (enFlag "libdaemon" (libdaemon != null) null)
      "--disable-python"
      # Circular dependency:
      # avahi -> pygtk -> gtk2 -> cups -> avahi
  
negative.code:       ln -sv avahi-compat-howl.pc $out/lib/pkgconfig/howl.pc
      '';
  
    meta = with lib; {
      description = "Facilitates service discovery on a local network";
      homepage = http://avahi.org;
      license = licenses.lgpl2Plus;
  