anchor.diff:        sha256 = "1qc6ydxhdfizsbkaxhpn3wib8sfphrw10xnnsxx2prvzg9g2zp67";
       });
   
  -  meta = {
  +  meta = with stdenv.lib; {
       description = "An enhanced version of the Berkeley UNIX C shell (csh)";
       longDescription = ''
         tcsh is an enhanced but completely compatible version of the
  
positive.code:       "ftp://ftp.astron.com/pub/tcsh/${pname}-${version}.tar.gz"
        "ftp://ftp.funet.fi/pub/unix/shells/tcsh/${pname}-${version}.tar.gz"
      ];
      sha256 = "0nw8prz1n0lmr82wnpyhrzmki630afn7p9cfgr3vl00vr9c72a7d";
    };
  
    buildInputs = [ ncurses ];
  
negative.code: { stdenv, fetchurl, fetchpatch
  , ncurses
  }:
  
  stdenv.mkDerivation rec {
    pname = "tcsh";
    version = "6.22.03";
  
    src = fetchurl {
      urls = [
  