anchor.diff:        fi
       done;
     " else "";
  +
  +  meta = {
  +    description = "GNU Ncurses, a free software emulation of curses in SVR4 and more";
  +
  +    longDescription = ''
  +      The Ncurses (new curses) library is a free software emulation of
  +      curses in System V Release 4.0, and more.  It uses Terminfo
  +      format, supports pads and color and multiple highlights and
  +      forms characters and function-key mapping, and has all the other
  +      SYSV-curses enhancements over BSD Curses.
  +
  +      The ncurses code was developed under GNU/Linux.  It has been in
  +      use for some time with OpenBSD as the system curses library, and
  +      on FreeBSD and NetBSD as an external package.  It should port
  +      easily to any ANSI/POSIX-conforming UNIX.  It has even been
  +      ported to OS/2 Warp!
  +    '';
  +
  +    homepage = http://www.gnu.org/software/ncurses/;
  +
  +    license = "X11";
  +  };
   }
  
positive.code: {stdenv, fetchurl, unicode ? true}:
  
  stdenv.mkDerivation {
    name = "ncurses-5.6";
    
    src = fetchurl {
      url = mirror://gnu/ncurses/ncurses-5.6.tar.gz;
      md5 = "b6593abe1089d6aab1551c105c9300e3";
    };
    
    configureFlags =
  
negative.code:     " --without-debug";
      
    preBuild = ''sed -e "s@\([[:space:]]\)sh @\1''${SHELL} @" -i */Makefile Makefile'';
  
    doCheck = true;
  
    # When building a wide-character (Unicode) build, create backward
    # compatibility links from the the "normal" libraries to the
  