anchor.diff:  { stdenv, fetchFromGitHub, which, autoreconfHook, ncurses, perl
  -, cyrus_sasl, gdbm, gpgme, kerberos, libidn, notmuch, openssl, lmdb, libxslt, docbook_xsl }:
  +, cyrus_sasl, gss, gpgme, kerberos, libidn, notmuch, openssl, lmdb, libxslt, docbook_xsl }:
   
   stdenv.mkDerivation rec {
  -  version = "20170602";
  +  version = "20170609";
     name = "neomutt-${version}";
   
     src = fetchFromGitHub {
       owner  = "neomutt";
       repo   = "neomutt";
       rev    = "neomutt-${version}";
  -    sha256 = "0rpvxmv10ypl7la4nmp0s02ixmm9g5pn9g9ms8ygzsix9pa86w45";
  +    sha256 = "015dd6rphvqdmnv477f1is22l7n5gvcvyblbyp0ggbp64650k0bz";
     };
   
     nativeBuildInputs = [ autoreconfHook docbook_xsl libxslt.bin which ];
     buildInputs = [
  -    cyrus_sasl gdbm gpgme kerberos libidn ncurses
  +    cyrus_sasl gss gpgme kerberos libidn ncurses
       notmuch openssl perl lmdb
     ];
   
  
positive.code:     homepage = http://www.neomutt.org;
      license = stdenv.lib.licenses.gpl2Plus;
      platforms = platforms.unix;
      maintainers = with maintainers; [ cstrahan vrthra erikryb ];
    };
  }
  
negative.code:   configureFlags = [
      "--enable-debug"
      "--enable-gpgme"
      "--enable-notmuch"
      "--with-homespool=mailbox"
      "--with-gss"
      "--with-mailpath="
      "--with-ssl"
      "--with-sasl"
      "--with-curses"
      "--with-idn"
      "--with-lmdb"
  
  