anchor.diff:    ];
   
     nativeBuildInputs = [
  -    docbook_xsl docbook_xml_dtd_42 gettext libxslt.bin makeWrapper tcl which
  +    docbook_xsl docbook_xml_dtd_42 gettext libxml2 libxslt.bin makeWrapper tcl which
     ];
   
     enableParallelBuilding = true;
  
positive.code:     wrapProgram "$out/bin/neomutt" --prefix PATH : "$out/lib/neomutt"
    '';
  
    meta = with stdenv.lib; {
      description = "A small but very powerful text-based mail client";
      homepage    = http://www.neomutt.org;
  
negative.code:     # and use a far more comprehensive list than the one shipped with neomutt
      substituteInPlace sendlib.c \
        --replace /etc/mime.types ${mime-types}/etc/mime.types
  
      # The string conversion tests all fail with the first version of neomutt
      # that has tests (20180223) so we disable them for now.
      # I don't know if that is related to the tests or our build environment.
      # Try again with a later release.
      sed -i '/rfc2047/d' test/Makefile.autosetup test/main.c
    '';
  
    configureFlags = [
  