anchor.diff:      optionals
       optionalString;
   
  -  version = "4.5.5";
  +  version = "4.6.0";
     name = "samba${if isClient then "-client" else ""}-${version}";
   
     tarballUrls = [
  
positive.code:   src = fetchurl {
      urls = map (n: "${n}.gz") tarballUrls;
      hashOutput = false;
      sha256 = "bff02762b3e4ee030f02266c6e24a0b888248b387246219b7fbe3e1758ef2184";
    };
  
    nativeBuildInputs = [
  
negative.code:     # ctdb/wscript
      (if isClient then null else "--enable-infiniband")
      #(if isClient then null else "--enable-pmda")
      (if isClient then null else "--enable-etcd-reclock")
      (if isClient then null else "--enable-ceph-reclock")
    ];
  
    preInstall = ''
  