anchor.diff:  { stdenv
   , fetchurl
  +, lib
   
   , acl
   , avahi
  
positive.code:     # --with-rundir=/run/cups
      # XXX: flag is not a proper boolean, build fails with optim enabled
      #"--without-optim"
      "--${boolWt (systemd_lib != null)}-systemd"
      "--with-languages=all"
      # --with-cups-user=lp
      # --with-cups-group=lp
  
negative.code:     };
    };
  
    meta = with lib; {
      homepage = https://cups.org/;
      description = "A standards-based printing system for UNIX";
      license = with licenses; [
  