anchor.diff:  
     buildInputs = [
       cyrus_sasl gss gpgme kerberos libidn ncurses
  -    notmuch openssl perl lmdb
  +    notmuch openssl perl lmdb makeWrapper
     ];
   
     nativeBuildInputs = [ autoreconfHook docbook_xsl docbook_xml_dtd_42 libxslt.bin which ];
  
positive.code: 
    postInstall = ''
      cp ${muttWrapper} $out/bin/mutt
    '';
  
    meta = with stdenv.lib; {
  
negative.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 }:
  
  let
    muttWrapper = writeScript "mutt" ''
  