anchor.diff: -{ lib, stdenv, fetchurl, ncurses, pkg-config }:
  +{ lib, stdenv, fetchurl, fetchpatch, ncurses, pkg-config }:
   
   stdenv.mkDerivation rec {
     version = "6.5.0";
  
positive.code:   '';
  
    meta = {
      homepage = "http://www.vanheusden.com/multitail/";
      description = "tail on Steroids";
      maintainers = with lib.maintainers; [ matthiasbeyer ];
      platforms = lib.platforms.unix;
  
negative.code:     url = "https://www.vanheusden.com/multitail/${pname}-${version}.tgz";
      sha256 = "1vd9vdxyxsccl64ilx542ya5vlw2bpg6gnkq1x8cfqy6vxvmx7dj";
    };
  
    patches = [
      # Fix pending upstream inclusion for ncurses-6.3:
      #  https://github.com/halturin/multitail/pull/4
      (fetchpatch {
        name = "ncurses-6.3.patch";
        url = "https://github.com/halturin/multitail/commit/d7d10f3bce261074c116eba9f924b61f43777662.patch";
        sha256 = "0kyp9l6v92mz6d3h34j11gs5kh3sf2nv76mygqfxb800vd8r0cgg";
      })
    ];
  
    nativeBuildInputs = [ pkg-config ];
  
  