anchor.diff:    # like pgpring, pgpewrap, ...
     NIX_LDFLAGS = "-lidn";
   
  -  configureScript = "./prepare";
  -
  -  enableParallelBuilding = true;
  +  postInstall = ''
  +    cp ${muttWrapper} $out/bin/mutt
  +  '';
   
     meta = with stdenv.lib; {
       description = "A small but very powerful text-based mail client";
  
positive.code:     sha256 = "0zn8imqfa76bxpkpy111c4vn6vjarbxc8gqv6m18qkksk0ly26l1";
    };
  
    nativeBuildInputs = [ autoreconfHook docbook_xsl docbook_xml_dtd_42 libxslt.bin which ];
    buildInputs = [
      cyrus_sasl gss gpgme kerberos libidn ncurses
      notmuch openssl perl lmdb
    ];
  
    configureFlags = [
      "--enable-debug"
      "--enable-gpgme"
      "--enable-notmuch"
      "--with-homespool=mailbox"
      "--with-gss"
      "--with-mailpath="
      "--with-ssl"
      "--with-sasl"
      "--with-curses"
      "--with-idn"
      "--with-lmdb"
  
      # Look in $PATH at runtime, instead of hardcoding /usr/bin/sendmail
      "ac_cv_path_SENDMAIL=sendmail"
  
negative.code: { stdenv, fetchFromGitHub, which, autoreconfHook, writeScript, ncurses, perl
  , cyrus_sasl, gss, gpgme, kerberos, libidn, notmuch, openssl, lmdb, libxslt, docbook_xsl, docbook_xml_dtd_42 }:
  
  let
    muttWrapper = writeScript "mutt" ''
      #!${stdenv.shell} -eu
  
      echo 'The neomutt project has renamed the main binary from `mutt` to `neomutt`.'
      echo ""
      echo 'This wrapper is provided for compatibility purposes only. You should start calling `neomutt` instead.'
      echo ""
      read -p 'Press any key to launch NeoMutt...' -n1 -s
      exec neomutt "$@"
    '';
  
  in stdenv.mkDerivation rec {
    version = "20171013";
    name = "neomutt-${version}";
  
  