anchor.diff:  
   stdenv.mkDerivation rec {
     name = "samba-${version}";
  -  version = "4.7.4";
  +  version = "4.7.5";
   
     src = fetchurl {
       url = "mirror://samba/pub/samba/stable/${name}.tar.gz";
  -    sha256 = "0iw290n0q4l5s92d0f9yz27yp3rdfr6bvsmvg1xvd19g8p2d04pv";
  +    sha256 = "13gyr0sk9vx6mccr2h35ca3g92kp50cqxrlzfgrddfmskzx08v9i";
     };
   
     outputs = [ "out" "dev" "man" ];
  
positive.code: { lib, stdenv, fetchurl, python, pkgconfig, perl, libxslt, docbook_xsl
  , docbook_xml_dtd_42, docbook_xml_dtd_45, readline, talloc
  , popt, iniparser, libbsd, libarchive, libiconv, gettext
  , kerberos, zlib, openldap, cups, pam, avahi, acl, libaio, fam, libceph, glusterfs
  , gnutls, libgcrypt, libgpgerror
  , ncurses, libunwind, libibverbs, librdmacm, systemd
  
  
negative.code:     [ "--with-static-modules=NONE"
        "--with-shared-modules=ALL"
        "--with-system-mitkrb5"
        "--with-system-mitkdc" "${krb5Full}"
        "--enable-fhs"
        "--sysconfdir=/etc"
        "--localstatedir=/var"
  