anchor.diff:      };
     };
   
  -  meta = with stdenv.lib; {
  +  meta = with lib; {
       homepage = https://cups.org/;
       description = "A standards-based printing system for UNIX";
       license = with licenses; [
  
positive.code: { stdenv
  , fetchurl
  
  , acl
  , avahi
  
negative.code:     "--${boolEn (libpaper != null)}-libpaper"
      "--${boolEn (libusb != null)}-libusb"
      #--enable-tcp-wrappers
      "--enable-acl"
      "--enable-dbus"
      "--enable-shared"
      "--disable-libtool-unsupported"
      "--disable-debug"
  