anchor.diff:    '';
   
   in stdenv.mkDerivation rec {
  -  version = "20171208";
  +  version = "20171215";
     name = "neomutt-${version}";
   
     src = fetchFromGitHub {
       owner  = "neomutt";
       repo   = "neomutt";
       rev    = "neomutt-${version}";
  -    sha256 = "1fn28q4akfz0nq3ysp8n53j8yqp2mx6yhbvb59c4zm6zgd4qzgp1";
  +    sha256 = "1c7vjl5cl0k41vrxp6l1sj72idz70r2rgaxa2m1yir6zb6qsrsd8";
     };
   
     buildInputs = [
  
positive.code: { stdenv, fetchFromGitHub, which, autoreconfHook, makeWrapper, writeScript,
  ncurses, perl , cyrus_sasl, gss, gpgme, kerberos, libidn, notmuch, openssl,
  lmdb, libxslt, docbook_xsl, docbook_xml_dtd_42, mime-types }:
  
  let
    muttWrapper = writeScript "mutt" ''
  
negative.code:   ];
  
    nativeBuildInputs = [
      docbook_xsl docbook_xml_dtd_42 gettext libxslt.bin makeWrapper tcl which
    ];
  
    enableParallelBuilding = true;
  